A rare red weather warning for London has been extended as a record-breaking June heatwave intensifies.
The Met Office alert, which began at 9am on Wednesday and will now run until 11 pm on Friday, warns of a risk to life from the exceptionally hot weather.
Temperatures in the capital reached 35.1C at 3pm, and were forecast to rise to 37C later on Wednesday after reaching a high of 33.9C in Kew Gardens on Tuesday.
The 50-year-old record UK high for June - 35.6C - was broken with 35.7C first recorded in Charlwood in Surrey, with 36C then recorded in Wisley in the same county.
Conditions could get even hotter later in the week.
Scores of schools in London are closing while many shops are doing the same as hundreds of thousands of workers stay at home.
Follow the latest updates below...
Key points
- How long will the London heatwave last?
- Londoners braced for record four straight tropical nights
- Full list of London schools closed or shutting early due to heatwave
- Which train services are urging passengers not to travel in heatwave?
- Sadiq Khan feels heat over Tube air con 'failure'
Temperature hits 36C in Surrey
17:13 , Matt Watts
Charlwood in Surrey broke the record for the hottest ever June day, but didn’t hold onto it for long.
Its 35.7C has been surpassed by a provisional 36C recorded in Wisley in the same county.
The hottest temperature recorded so far in Greater London remains 35.1.
Hottest ever June day recorded in Surrey as temperatures hit 35.7C
16:25 , Matt Watts
The hottest June day on record has been recorded in Charlwood, Surrey.
The temperature hit a “provisional” 35.7C this afternoon - beating the previous 50-year-old UK record of 35.6C.
The record could be beaten again today.
Hottest June day on record as temperatures soar to 35.7C in Surrey
16:12 , Matt Watts
The hottest June day on record has been recorded in Charlwood, Surrey.
The temperature hit a “provisional” 35.7C this afternoon - beating the previous 50-year-old UK record of 35.6C.
The record could be beaten again today.
Red 'extreme' heat alert extended
15:59 , Matt Watts
The UK Health Security Agency (UKHSA) has extended the current red heat-health alert for London by 24 hours.
The highest possible alert, that warns of a risk to life, will now be in place until 11pm on Friday.
The South West, South East,, East of England, West Midlands and East Midlands have also had their red alerts extended.
It comes as forecasters predict temperatures could hit 36C in London on Friday.
Harry Styles shares warning with fans as he performs during heatwave
15:30 , Tom Place
Harry Styles shared a stark warning with fans about the London heatwave while performing at Wembley Stadium on Tuesday.
As the capital battled soaring temperatures, Styles, 32, kicked off the gig by urging fans to stay hydrated and let him know if he should stop the show if anyone was struggling with the heat.
The former One Directioner told concert-goers: “Look after yourselves, try to stay hydrated.
“If you need anything at any point just let me know. We can stop at any time, it's okay.”
Harry Styles shares strict warning with Wembley fans amid heatwave
Khan feels heat over Tube air con 'failure'
15:12 , Tom Place
Sir Sadiq Khan is coming under pressure to speed up the rollout of air conditioning on the Tube as London frazzles in its second heatwave of the year.
As temperatures soared towards 40C on Wednesday, the Mayor of London has been urged to sort out delays in new rolling stock with air con for the Piccadilly line.
Opposition politicians also stressed that this must be a step towards air conditioning on the whole of the Underground network as the capital faces hotter weather due to climate change.
The first of 94 new Piccadilly trains had originally been expected to enter service late last year and to bring in air con for the first time on a deep Tube line.
But this was first put back into the second half of this year and is now expected to happen between December and June next year.
You can read the full story by The Standard’s chief reporter Nicholas Cecil here:
Sadiq Khan feels heat over Tube air con 'failure' as temperatures soar
Khan asks for public to 'bear with us' during heatwave
15:04 , Tom Place
Sir Sadiq Khan has said that London and the UK as a whole have not adapted to deal with climate change, and urged the public to “bear with us” as they face public transport delays during the heatwave.
The Mayor of London was speaking during a visit to The Aldgate School in London to announce the results of an air quality report.
He said: “What used to be a once in a generation occurrence, events of biblical proportions, now takes place every year, whether it’s heatwaves, whether it’s flash flooding, whether it’s lightning, whether it’s thunder – we as a city, we as a country, haven’t adapted to be resilient to the consequences of man-made climate change.
“People across the country can expect to see delays in public transport today, tomorrow and the rest of this week that’s a consequence of the extreme heat.
“People across the country I am afraid will have to bear with us – our public transport system is not made for temperatures approaching 40C.
“40% of Tubes are now air conditioned with more going forward. I will be publishing very soon a plan of what more we need to do to deal with heat.”
Met Office warns heatwaves may become more frequent in the future
14:42 , Tom Place
Scientists have warned that climate change has led to more frequent and intense heatwaves, with Met Office projections indicating hot spells will become more frequent in the future, particularly in the south-east of the UK.
Professor Stephen Belcher, Met Office chief scientist, said: “Human-induced climate change has made events like this more likely and more intense. To see temperatures like this in the UK in June is sobering.
“Events like this bring home the implications of climate change, with very high temperatures and humidity bringing significant health implications from heat stress, as well as impacts to a range of sectors such as transport, energy and water supply.”
Temperature hits 34.2C at Heathrow
14:35 , Tom Place
Temperatures continue to rise this afternoon, with the mercury touching 34.2C at Heathrow at 2pm.
The Met Office is forecasting a high of around 37C in London at around 5pm - which would top the highest June temperature ever of 35.6C, recorded in Southampton in 1976.
Starmer: Climate change 'one of the most significant challenges of our time'
14:27 , Tom Place
Sir Keir Starmer discussed the heatwave during Prime Minister's Questions earlier this afternoon.
The Prime Minister said that the changing climate is "one of the most significant challenges of our time".
He added that it used to be "common ground" that climate change was a "generational challenge", but that it is a "shame that in order to chase Reform votes" the Conservatives have "changed their minds".
Sir Keir said: "I will always maintain that we must be global leaders on climate change and we always will be."
Over 1,000 schools to close in coming days
14:19 , Tom Place
At least 1,000 schools will be either closed or partially closed over the next two days as a rare red heat warning is in force for England and Wales.
With forecasters saying that temperatures could reach towards 40C on Thursday, hundreds of schools will either close completely, send children home early or make other adjustments such as relaxing uniform rules to help keep students and staff safe and comfortable.
Education Secretary Bridget Phillipson has urged parents to send children to school if they remain open, warning “every day of absence and lesson missed has a cost”.
She said: “I know hot weather can be a struggle. But my message to families is simple: if your child’s school is open, you should keep sending them into school.”
Eurostar continuing operations
14:06 , Tom Place
Eurostar has said it continues to operate the majority of its trains on both cross-Channel and continental routes – with a small number of cancellations – as extreme heat conditions affect rail infrastructure and some of its operations.
The company also urged passengers to stay hydrated on their journey and said complimentary water was being distributed on board and in stations.
A spokesperson said: “High speed trains operating between Brussels and the French border will run at reduced speeds by day resulting in extended journey times.
“This does not affect London-Paris trains.
“Eurostar advises its vulnerable passengers to postpone their journey where possible.
“Eurostar customers can change their journey for free if they wish to travel outside the heatwave.”
Greggs closes two London branches due to heatwave
13:57 , Tom Place
Greggs has closed 11 of its stores across the country today - including two in London.
An email sent to customers of the bakery chain said: "Just to let you know – the following shops will be temporarily closed on Wednesday 24th and Thursday 25th June to protect our customers and colleagues during the severe hot weather."
The Barnet and Leicester Square branches are closed in the capital.
You can read the full story here.
The Summer of '76 - remembered
13:45 , Tom Place
The weather in London this week is reminding some of those with longer memories of the famous summer of 1976.
Nick Curtis has been sharing some of his memories of that summer - you can read the full article below.
Think this heatwave is bad? It's got nothing on the summer of 1976
Greenpeace calls for next PM to 'stay the course'
13:25 , Tom Place
Campaigners have called for the next Prime Minister to “stay the course” on climate policies, as MPs prepare to debate and vote on emissions targets for the period 2038-2042.
Greenpeace UK’s political campaigner Angharad Hopkinson said: “The summer of ’76 may be seared into the nation’s memory, but it’s quickly being overtaken by even more terrifying heatwaves.
“The only way off this hellish treadmill is to reduce our dependence on fossil fuels.
“Our next Prime Minister needs to act on the evidence outside their window and the advice of their scientific advisors and stay the course on climate policies.
“The alternative is parched reservoirs, unaffordable food, shuttered hospitals and schools and wildly fluctuating bills each time a new oil war is kindled.
“Every MP voting on carbon targets today, or lobbying for a watering down of net-zero policies, would do well to remember that.”
Temperature reaches 33C
13:18 , Tom Place
The temperature reached 33C at 1pm in London, with highs of 37C expected later on this afternoon.
The hottest June temperature on record is 35.6C, set in 1976 - that figure is expected to be shattered today.
200 passengers evacuated from London train during heatwave
12:29 , Tom Place
More than 200 passengers were evacuated from a London train after it suffered a breakdown during the searing heatwave.
The Great Northern train, which was travelling from Moorgate to Stevenage, broke down around 3pm on Tuesday afternoon - as temperatures in the capital hit about 33C.
Footage circulating online shows passengers walking along the track towards Drayton Park station, with Arsenal’s Emirates Stadium in the background.
Great Northern have said that efforts were made to restart the train, with the evacuation only taking place when it was found this was not possible.
You can read the full story here:
London train breaks down during heatwave forcing 200 passengers to be evacuated
Which London shops and restaurants are closing during the heatwave?
12:17 , Tom Place
A number of businesses in London have closed or reduced their hours this week due to the stifling working conditions during the heatwave.
High temperatures creating “uncomfortably hot” working conditions have forced many eateries, shops and salons to shut.
More than a dozen London locations have announced either complete or partial closures for Wednesday and Thursday, with many ceasing services from 12pm onwards.
You can read the full story here:
Which London shops and restaurants are closing during the heatwave?
Rail services to be disrupted into Friday
12:04 , Tom Place
Significant disruption to train services from extreme heat will continue into Friday, an operator said.
Chiltern Railways has said it is extending the period when it is cancelling more than half its services, initially planned for Tuesday to Thursday.
Michael Stewart, commercial and customer strategy director at Chiltern Railways, said: “This week’s extreme weather is going to continue into Friday so as a result we strongly advise you to avoid travelling until the weekend.
“Trains are running at greatly reduced levels as there is a significant risk to infrastructure.
“Running a reduced service means there is more resilience in the network and more chance for the rail network to recover.
“Trains which do run may experience significant delays and see very busy conditions.”
Amber weather warning announced for Saturday
11:42 , Tom Place
The Met Office has issued an amber warning for extreme heat covering much of east and south-east England on Saturday.
Temperatures are expected to be a few degrees cooler than the previous days, but are still expected to exceed 30C, with peaks between 32C to 34C in London.
Night temperatures are unlikely to fall below the high teens Celsius for most, with some places probably still in the low 20C, while high humidity will continue, the Met Office said.
Red weather warnings are in place until 9pm on Thursday, and amber warnings had already been announced for Friday.
RAC 20% busier than normal during heatwave
11:15 , Tom Place
The RAC has said it responded to 20% more callouts to broken-down vehicles than usual on Tuesday during the heatwave
Spokesman Simon Williams said: “Tuesday was a very busy day for breakdowns with our patrols finishing the day 20% busier than normal for late June.
“Wednesday is looking even more challenging as more cars are succumbing to the extreme heat.
“We strongly urge people to avoid driving unless it’s essential, as breaking down in these conditions is potentially life threatening if they aren’t properly prepared.
“Being stuck at the side of a hot road without enough water and some form of shade is very serious.
“For this reason our patrols are also carrying extra bottles of water to give to broken-down members.”
Liberal Democrats calls for public buildings to be used as 'cool hubs'
10:30 , Tom Place
The Liberal Democrats have called for the Government to open air-conditioned public buildings as “cool hubs” for vulnerable people during the heatwave.
They party said that gyms, leisure centres, libraries and other buildings could offer relief for those particularly at risk from the extreme heat.
They have also urged ministers to prepare the country for more extreme temperatures by investing in cooling for hospitals, care homes and schools.
Liberal Democrat climate spokeswoman Pippa Heylings MP said: “Cool hubs could be a lifeline for the most vulnerable people in our communities who are struggling in the sweltering heat.
“Public spaces exist to serve their communities and it’s right they should offer refuge during heatwaves.
“Our hospitals, care homes and schools are dangerously hot, these buildings must be fit for a climate that is getting hotter every year.
“It is completely unfair to expect young people to cope with extreme heat as well as increased stress during crucial GCSE and A-level exam periods.”
What is causing the heatwave? Heat domes and Omega blocks explained
09:55 , Tom Place
The hot weather the capital is experiencing is being driven by a significant area of trapped high pressure building in Europe, known as a “heat dome”.
A heat dome is created when a persistent high-pressure system, known as an omega block, stays over the same area for days or potentially weeks, trapping very warm air underneath it.
The omega block takes its name from the shape of the Greek letter Ω, as it traps hot Saharan air like a lid on a pressure cooker.
It causes temperatures to become hotter and hotter, building through the day as warm air becomes compressed over a smaller region.
These weather systems and their prolonged heat increase the risk of wildfire and heat-related health problems, according to the Royal Meteorological Society (RMS).
What is a red weather warning?
09:16 , Tom Place
A red weather warning represents an exceptional spell of hot and humid weather expected across a region, with impacts to the general population highly likely.
It is expected that adverse health effects will be experienced, not just by those most vulnerable to extreme heat, leading to serious illness or danger to life .
There will also be a high risk of failure of heat-sensitive systems and equipment, with the loss of power and other essential services, such as water, electricity, gas or mobile phone services.
The Met Office has said that "substantial changes" in working practices and daily routines will be required.
This is only the second time a red warning has been issued since extreme heat warnings began in 2021.
⚠️⚠️🔴 Red weather warning issued 🔴⚠️⚠️
— Met Office (@metoffice) June 22, 2026
Extreme heat across parts of central/southern England and Wales
Wednesday 0900 - Thursday 2100
Latest info 👉 https://t.co/QwDLMfRBfs
Stay #WeatherAware ⚠️ pic.twitter.com/IwXnyU1E7y
Red weather warning now in place
09:02 , Tom Place
A red weather warning for extreme heat is now in place.
The warning covers parts of central and southern England and Wales, and is currently in place until 9pm on Thursday.
This could be extended, with Friday’s temperatures now forecast to be hotter than Thursday, according to the Met Office.
How to sleep in a heatwave: 10 tips to cool down at night
08:59 , Tom Place
Sleeping in the capital is proving a challenge this week.
Londoners are in the midst of four straight tropical nights, defined as when temperatures do not drop below 20C.
Tropical nights not only make it tricky to get some shuteye, but they can prevent proper recovery from the daytime heat, according to the Met Office.
Here are some tips that can help you get through the sweltering nights.
Map shows London's 'coolest places'
08:46 , Tom Place
With temperatures rivalling Barcelona and Ibiza, the Greater London Authority’s “Cool Spaces” list could be the ticket to find some solace from the sun.
The GLA has produced a map to help Londoners find places to cool down, as well as highlighting water refill stations around the capital.
The map is intended to help reduce health risks from hot weather and to offer shelter from the sun on especially warm days.
London's coolest places revealed: Interactive map shows where to escape 40C heat
Met office says UK could see 45C heatwave by 2056
08:21 , Tom Place
Met Office scientists have highlighted how events such as the infamous summer heatwave of 1976 could become significantly more intense in the future.
That summer remains one of the most significant weather events in UK history, with prolonged periods of heat and drought having a widespread impact on water resources, health and infrastructure.
The Met Office has developed a plausible “2056 scenario”, based on around 2.5°C of global warming, to show how a prolonged heat event similar to 1976 could evolve in the coming decades. - with UK temperatures reaching 45C.
This scenario is not a forecast of a specific future event, but a plausible illustration designed to help to understand how risks could change as the climate warms.
Met Office Chief Scientist Professor Stephen Belcher said: “Weather is the national conversation in the UK and the summer of 1976 lives on in many memories. Since then, our climate has fundamentally changed, with average UK summers having warmed by around 1.4°C. Crucially extremes have changed too.
"By using data from Met Office climate projections, we can glimpse into what an event like the 1976 summer would look like in the 2050s. It is a stark realisation to see the maximum temperatures reach 45°C.”
Will the heatwave affect Wimbledon?
08:05 , Tom Place
The qualifiers for the main draw at Wimbledon are taking place this week.
The Lawn Tennis Association has reminded fans to stay hydrated, wear hats, and apply sun cream.
Staff will also rotate more regularly to help shield those working the events from the sun.
Meanwhile, the women’s T20 World Cup is underway alongside the England men’s test against New Zealand.
Attendance is expected to drop because of the heat, particularly as schools will no longer attend the fixtures.
Extra drinks breaks have been introduced and the temperature will be regularly assessed to ensure it doesn’t pose a risk to players.
Four straight tropical nights in the capital
07:47 , Tom Place
Londoners are facing four tropical nights as temperatures hit 31C at as late as 11pm.
Day time temperatures could reach as high as 40C this week, with the temperature never dropping below 20C at night from Tuesday night to Friday night.
A tropical night is defined as when temperatures do not drop below 20C, according to the Met Office.
You can read the full story here.
Sales of fans, ice cream makers, and silk scarves soar amid heatwave
07:38 , Tom Place
Brits have been flocking to stores to buy themselves ice cream makers, fans, and sun cream to help them cope with the extreme heat.
Currys is reporting an almost 1,500% increase in customers searching for fans, while Lakeland said sales of ice cream makers were up by more than 500% on some lines.
John Lewis said sales of pizza ovens had soared by 557% week on week and searches for silk scarves online were up 200% on last week.
The retail giant added that shoppers were also looking for barbecues, charcoal ovens, and paddling pools.
In supermarkets, Tesco is predicting a 60% increase in sales of ice, a 48% increase in sales of ice cream and ice lollies, and a 44% spike in sales of barbecue meat.
London train services urging passengers not to travel
07:31 , Tom Place
A number of rail services operating in and out of London are recommending passengers not to travel on this week due to the soaring temperatures.
With London gripped by a heatwave, many other operators are advising passengers to travel earlier in the day to avoid the worst of the heat.
National Rail has advised passengers on Wednesday or Thursday to “only travel if absolutely necessary,” and to check before travelling on Tuesday and Friday.
You can read the advice from each key rail line serving London here.
How long will the London heatwave last?
07:22 , Tom Place
The latest heatwave to hit the capital officially took hold on Monday, with red weather warnings coming into place today when temperatures are expected to exceed 37C.
To add insult to injury, the high humidity is making London feel especially uncomfortable.
More scorching temperatures are expected in the coming days - but when will the heatwave end? Read the full story here.
Extreme heat leads to cancellation of climate change event
07:09 , Tom Place
A London event on tackling extreme heat has ironically been cancelled because of extreme heat, organisers confirmed.
The meeting, due to take place at the Shaw Library at the London School of Economics on Wednesday as part of Climate Action Week, was called off after the Met Office issued a Red Extreme Heat Warning for London and parts of England.
The event, titled Extreme Heat: Improving Governance and Strengthening Action Around the World, was organised by the Grantham Research Institute on Climate Change and the Environment.
In a social media post on Tuesday, a spokesperson for the Zurich Climate Resilience Alliance said: “The event venue, like most buildings in London, does not have any cooling mechanisms in place, and we cannot risk the wellbeing of speakers or guests by subjecting everyone to very unpleasant indoor conditions in addition to hot journeys to the venue.”
You can read the full story here.
London schools closing or shutting early due to heatwave
07:05 , Tom Place
Dozens of schools in London are closing or part-closing amid rare red warnings over extreme temperatures.
Temperatures are forecast to soar to as high as 37C until Friday, prompting schools across the capital to announce they will close completely or be closing early - or that parents can pick up their pupils early.
You can see a list of schools affected in London here.
Reduced service on Heathrow Express
06:57 , Tom Place
The Heathrow Express will be running at a reduced service today due to the severe weather.
Trains will depart at:
- XX:25 and XX:55 past the hour from London Paddington
- XX:27 and XX:57 past the hour at Heathrow Terminal 5
- XX:02 and XX:32 past the hour at Heathrow Terminal 2 & 3
A number of other train lines have also confirmed plans for reduced services, with bosses urging passengers not to travel unless absolutely essential.
Red weather warnings to come into force
06:52 , Tom Place
Temperatures of up to 37C are forecast in London today, with officials warning of significant disruption to daily life.
Londoners have been urged to adapt their daily routines to cope with the scorching conditions.
Many schools will close and people have been urged not to travel, as rare red heat weather warnings come into force from 9am today.
During the peak of the heatwave, temperatures could come close to the UK’s all-time high of 40.3C, measured in Lincolnshire in July 2022.
The record temperature for June of 35.6C, set in Hampshire in 1976, is expected to be smashed.
Good morning
06:50 , Tom Place
We are resuming our live weather coverage this morning, with London set to be hit with a red weather warning as temperatures reach the high 30s.
COBR meeting to be held in response to the heatwave, the Government has said
Tuesday 23 June 2026 20:44 , Megan Howe
A COBR meeting was held in response to the heatwave engulfing the UK, the Government said.
A red weather warning for extreme heat covering an area stretching from London to Swansea and Somerset to Birmingham was issued by the Met Office and will come into effect from 9am on Wednesday to 9pm on Thursday.
“We are working across Government and with devolved and local partners to respond to the severe heatwave,” a Government spokesperson said.
“As part of this response, the Cabinet Office held an official level COBR meeting on Tuesday morning, and will continue to closely monitor the situation.
“As well as being uncomfortable, the red weather alerts indicate that the heat poses a risk to life.
“We encourage people to pay close attention to guidance issued by the UK Health Security Agency, other public health bodies, and organisations such as transport operators.”
Mayor of London triggers 'high' air pollution alert for capital
Tuesday 23 June 2026 20:16 , Megan Howe
Sir Sadiq Khan has triggered a “high” air pollution alert for the capital London on Wednesday on advice from forecasters at Imperial College, the third one this year.
He urged Londoners to stop their engines idling and avoid burning garden waste, which can contribute to high levels of pollution, and said details have been shared with London’s GPs and emergency departments, to ensure that they have crucial information to help vulnerable patients.
Deputy mayor for environment and energy, Mete Coban said: “Toxic air is responsible for thousands of premature deaths in London each year, which is why the mayor has done everything in his power to tackle it, which includes launching the world’s largest clean air zone.
“We are urging Londoners to look after themselves during this period of extremely hot weather and elevated pollution levels, stop their engines idling, and refrain from burning garden waste – all of which contribute to high levels of pollution.
“It is really important we all do our bit to protect those who are most vulnerable as we continue working to build a safer and greener London for all.”
How to sleep in a heatwave: 10 tips to cool down at night
Tuesday 23 June 2026 19:53 , Alastair Lockhart
London has been hit with its second heatwave of the year and, while the sun is always welcome, sleeping in the heat will prove more of a challenge. There’s tossing, turning and a whole lot of sweating.
Londoners have four tropical nights ahead of them from Tuesday to Friday, defined as when temperatures do not drop below 20C.
Tropical nights not only make it tricky to get some shuteye, but they can prevent proper recovery from the daytime heat, according to the Met Office.
So, as the heatwave takes a hold, here are some tips that can help you get through the sweltering nights.
Spanish-style ‘fire weather’ could create ‘capacity issue’ for forest keepers
Tuesday 23 June 2026 19:43 , Alastair Lockhart
Mediterranean-style “fire weather” will push the guardians of some of England’s largest forests to their limits if blazes break out, a senior adviser has warned.
Rob Gazzard, who advises the Forestry Commission on wildfires, said “extreme scenarios are going to be very challenging” to deal with for the organisation.
The Met Office has issued a red warning for “extreme heat” across parts of England and Wales on Wednesday and Thursday, covering several large cities such as London, Cardiff and Birmingham, as well as the rural Chiltern Hills, Cotswolds and Forest of Dean.
Temperatures are expected to climb to 39C or higher.
Temperature hits 34.6C
Tuesday 23 June 2026 19:23 , Alastair Lockhart
The highest temperature recorded in the UK on Tuesday was 34.6C in Wisley in Surrey, the Met Office has said.
Tuesday’s maximum temperature does not beat the June record of 35.6C set in Hampshire in 1976 and has not matched the 35.1C recorded on the hottest day of the year so far in Kew Gardens in London on May 26.
Heatwave warning after surge in number of children treated for sunburn in 2025
Tuesday 23 June 2026 18:40 , Alastair Lockhart
The number of children requiring hospital treatment for sunburn injuries surged last year, charities have said, as they warned of the growing dangers of heatwaves.
A “heat-dome” settling over western Europe could bring temperatures of nearly 40C to parts of the UK by Wednesday, with this latest heatwave expected to smash the record for June of 35.6C set in Hampshire in 1976.
A red weather warning for extreme heat covering an area stretching from London to Swansea and Somerset to Birmingham was issued by the Met Office from 9am on Wednesday to 9pm on Thursday.
As the Met Office’s weather alert was issued, the Children’s Burns Trust (CBT) and Royal Society for the Prevention of Accidents (RoSPA) warned of the growing dangers of heatwaves, which they said can cause serious harm to people, including heat exhaustion, dehydration and burns from prolonged sun exposure.
The charities warned children are particularly at risk during episodes of extreme heat, as “their skin burns more easily and they may not recognise early warning signs”.
In pictures: London's heatwave
Tuesday 23 June 2026 18:23 , Alastair Lockhart
Latest weather forecast
Tuesday 23 June 2026 17:46 , Alastair Lockhart
The Met Office has revised its forecast from earlier in the week, when temperatures were expected to go as high as 39C or even 40C.
London is not now forecast to get that hot, but the UK could see the record for the hottest day in June broken. The record currently stands at 35.1C.
A red warning for extreme heat is in place from the start of tomorrow until the end of Thursday.
Wednesday is likely to see a high of 35C and Thursday is forecast to hit 33C.
Friday could see temperatures rise to 36C before falling slightly to 32C on Saturday.
Things will then cool amid cloudier conditions, with Sunday forecast to see a high of 26C and next Monday 24C.
Will the heatwave affect Wimbledon?
Tuesday 23 June 2026 17:09 , Niva Yadav
The qualifiers for the main draw at Wimbledon is taking place this week. The Lawn Tennis Association has reminded fans to stay hydrated, wear hats, and apply sun cream.
Staff will also rotate more regularly to help shield those working the events from the sun.
Meanwhile, the women’s T20 World Cup is underway alongside the England men’s test against New Zealand.
Attendance is expected to drop because of the heat, particularly as schools will no longer attend the fixtures.
Extra drinks breaks have been introduced and the temperature will be regularly assessed to ensure it doesn’t pose a risk to players.
Thousands of pupils will not attend school during the heatwave
Tuesday 23 June 2026 16:55 , Niva Yadav
Thousands of pupils in the UK will either not be able to attend school this week or will head home earlier than usual because of full or partial schools closures amid the extreme heat.
Hundreds of schools have made decisions to either close completely, send children home early or make other adjustments such as relaxing uniform rules to help keep students and staff safe and comfortable.
It comes as a “heat-dome” settling over western Europe could bring temperatures of up to 40C by Wednesday, with this latest heatwave expected to surpass the record for June set in Hampshire in 1976.
Temperatures hit 34C
Tuesday 23 June 2026 16:33 , Niva Yadav
The mercury has hit 34C in London as 5pm looms. It looks as though this will be the hottest temperature of the day, according the Met Office forecast.
This means the record high of 35.6C may go unbroken, at least for today. Tomorrow will bring equally warm spells of sunshine and highs of 36C.
The cooler than predicted temperature today might be in part due to the thunderstorms last night which helped to cool down the air. That said, temperatures could still rise as we head into this evening.
Hundreds of schools have shut across the UK
Tuesday 23 June 2026 16:20 , Niva Yadav
Hundreds of schools have partially or entirely closed in the UK amid the heatwave.
In London, schools from around the city have closed their doors to protect pupils from the extreme weather.
Many of these schools are running compressed school days to prevent children from having to sit in hot classrooms all day.
Others are accommodating to the hot weather by cancelling sporting events and PE lessons, or allowing a relaxed uniform.
You can read the full piece here of all the schools closed in London.
Full list of London schools closed or shutting early due to heatwave
Sales of fans, ice cream makers, and silk scarves soar amid heatwave
Tuesday 23 June 2026 16:08 , Niva Yadav
Brits are flocking to stores to buy themselves ice cream makers, fans, and sun cream to help them cope with the extreme heat.
Currys is reporting an almost 1,500% increase in customers searching for fans, while Lakeland said sales of ice cream makers were up by more than 500% on some lines.
John Lewis said sales of pizza ovens had soared by 557% week on week and searches for silk scarves online were up 200% on last week.
The retail giant added that shoppers were also looking for barbecues, charcoal ovens, and paddling pools.
In supermarkets, Tesco is predicting a 60% increase in sales of ice, a 48% increase in sales of ice cream and ice lollies, and a 44% spike in sales of barbecue meat.
UK's biggest train operator warns against non-essential travel
Tuesday 23 June 2026 16:00 , Niva Yadav
Britain’s biggest train operator has warned passengers not to travel on Wednesday or Thursday unless essential.
Govia Thameslink Railway (GTR), which was recently nationalised, includes Southern, Thameslink, Gatwick Express and Great Northern.
A number of operators have already announced reduced services or warned against travel, including Avanti West Coast.
Speed restriction have been imposed across railway services and customers are being warned to expect delays and cancellations.
How to sleep in a heatwave
Tuesday 23 June 2026 15:50 , Niva Yadav
The temperature is not expected to drop below 22C this evening, making for an uncomfortable night to say the least.
Expect tossing, turning, and profuse sweating.
Luckily, The Standard has your back with a list of the best ways to get some shuteye during the heatwave.
How to sleep in a heatwave: 10 tips to cool down at night
Map shows London's 'coolest places'
Tuesday 23 June 2026 15:40 , Niva Yadav
With temperatures rivalling Barcelona and Ibiza, the Greater London Authority’s “Cool Spaces” list could be the ticket to find some solace from the sun.
The GLA has produced a map to help Londoners find places to cool down, as well as highlighting water refill stations around the capital.
The map is intended to help reduce health risks from hot weather and to offer shelter from the sun on especially warm days.
Take a look at the map here.
London's coolest places revealed: Interactive map shows where to escape 40C heat
Will there be more thunderstorms tonight?
Tuesday 23 June 2026 15:40 , Niva Yadav
Tonight is expected to stay warm and muggy, according to BBC Weather. But thankfully, there are no thunderstorms forecast for this evening.
Sleeping might still be a challenge as temperatures will stay above 22C through the night, making tonight the first of four potentially “tropical nights.”
Most Londoners found their sleep interrupted by a barrage of thunderstorms on Monday evening.
Temperature hits 33C, but feels like 39C
Tuesday 23 June 2026 15:30 , Niva Yadav
London is experiencing temperatures of 33C as it nears 4pm. But BBC Weather is reporting that in reality, it may feel more like 39C.
The Met Office told The Standard that the heat will feel particularly uncomfortable as there is high humidity in the air today and over the course of this week.
Operators warning against travel to and from London
Tuesday 23 June 2026 15:19 , Tom Place
Numerous operators in London are warning against travel as the heatwave grips the capital.
In addition to travelling earlier in the day, to avoid peak sunshine, operators such as National Rail and Great Western are advising “essential travel only” while others have cancelled multiple routes.
You can find out exactly which services are running and what operators are saying here.
Which London train services are urging passengers not to travel in heatwave?
Mercury hits 33C in London
Tuesday 23 June 2026 14:57 , Niva Yadav
The mercury has hit 33C in London, according to the Met Office.
The forecast adds that it could reach 35C by 5pm when the majority of London’s commuters decide to head home.
Buckingham Palace suspends Changing of the Guard ceremony
Tuesday 23 June 2026 14:44 , Niva Yadav
Buckingham Palace has announced it has suspended the Changing of the Guard ceremonies at the palace and Windsor Castle to protect soldiers, working horses, and members of the public from the forecast heatwave.
Jeremy Clarkson closes butchers' counter
Tuesday 23 June 2026 14:25 , Niva Yadav
Over in the Cotswolds, Jeremy Clarkson has been forced to close the butcher’s counter at his pub because of the extreme heat.
In a post on social media, the pub named the Farmer’s Dog said: “The combination of extreme heat, refrigeration units and a giant tent has proved challenging. We're working on solutions and will reopen as soon as it's sensible to do so. “
A update from The Farmer’s Dog
— The Farmer's Dog (@FamersDog) June 23, 2026
“It turns out that when Britain reaches temperatures normally associated with southern Spain, certain things stop working properly.
As a result, Chops (our butcher's counter) will be closed today and potentially for the remainder of the week. The… pic.twitter.com/FOFczZQCtB
'Stay safe in the heat', urges Sir Sadiq Khan
Tuesday 23 June 2026 14:20 , Niva Yadav
Sir Sadiq Khan has urged Londoners to “stay safe in the heat” in a post on social media.
The London mayor said: “With the Red Heat Health Alert in place till Thursday 25 June, Londoners can take simple actions to stay safe while taking necessary journeys, working or trying to keep cool at home.”
Stay safe in the heat ☀️
— Mayor of London, Sadiq Khan (@MayorofLondon) June 23, 2026
With the Red Heat Health Alert in place till Thursday 25 June, Londoners can take simple actions to stay safe while taking necessary journeys, working or trying to keep cool at home.
5 Hertford Street relaxed strict jacket-only rule
Tuesday 23 June 2026 14:15 , Niva Yadav
Mayfair’s 5 Hertford Street has relaxed its strict jacket-only rule for men as the heatwave takes a hold on London.
The private members’ club usually enforces a strict jacket rule with members only permitted to take off jackets on the dance floor.
But members - who include the likes of Rishi Sunak and Boris Johnson - won’t get as far as being allowed to wear flip-flops or shorts.
School closures growing amid red weather warnings
Tuesday 23 June 2026 14:10 , Niva Yadav
The number of schools closing amid the red weather warnings is growing.
As extreme temperatures hit the capital on Tuesday, several schools have announced plans to close early or close altogether to protect pupils.
Across the UK, it’s estimated that some 243 schools have closed or partially closed.
Other schools have relaxed school uniform rules or cancelled PE lessons to accommodate for the hot weather.
The Standard has been keeping track of all the schools closing in the capital. You can read the full story here.
Full list of London schools closed or shutting early due to heatwave
Heatwave could trigger blackouts, warns grid operator
Tuesday 23 June 2026 14:05 , Niva Yadav
The National Energy System Operator (NESO) has warned that the heatwave could trigger blackouts this summer as potential wildfires damage power lines.
The grid operator said that a 600% rise in wildfires in the past two years has increased the risk of damaged power lines.
The extreme weather could also cause power lines to sag.
If you think it's hot, take a look at France
Tuesday 23 June 2026 14:00 , Niva Yadav
London might be hitting highs of 31C, but in Paris, it’s already 33C. Many French towns are set to see record-breaking highs of 40C.
As many as 800 French schools have announced closures over the heatwave period, while a French nuclear reactor in Toulouse has been forced to halt operations due to the extreme heat.
Four tropical nights ahead
Tuesday 23 June 2026 13:55 , Niva Yadav
There will be no respite when the sun goes down. While daytime temperatures peak in the high thirties, the mercury will never drop below 20C from tonight to Friday night.
A tropical night is defined as when temperatures do not drop below 20C, according to the Met Office.
Londoners are being advised to move to cooler parts of the house for sleeping, open windows, and use electric fans.
London heatwave 'sleep nightmare' with record four tropical nights up to 31C at 11pm
London Fire Brigade warns Londoners to take cares outdoors
Tuesday 23 June 2026 13:45 , Niva Yadav
The London Fire Brigade is warning Londoners to take care as the “intense period of heat hits the capital.”
The risk around wildfires and water safety grows when temperatures rise, so Londoners must prevent fires from starting in the first place.
This means not using disposable barbecues at parks, ensuring that smoking materials are discarded properly, and avoiding setting up barbecues on decking.
Following the concerning number of accidental drownings in the last heatwave, the London Fire Brigade is urging parents to speak with children about the dangers of open water.
Diabetes charity issues advise for coping during heatwave
Tuesday 23 June 2026 13:35 , Niva Yadav
Diabetes UK has issued advice on how people living diabetes can manage their health in the hot weather, after red heat-health alerts were issued for large parts of the country.
Almost 6 million people in the UK are living with diabetes, and higher temperatures can make it harder to manage blood sugar levels.
The charity is advising people who usually check their own blood sugar levels to do this more often, and to be ready to adjust their diet or insulin dose.
It has reminded people to keep meters and test strips away from the sun, and to ensure insulin is stored properly.
'London is cooking' warns UN chief
Tuesday 23 June 2026 13:25 , Niva Yadav
The United Nations chief has warned that London is “cooking”, as he urged action against the climate crisis.
Speaking at the a London Climate Action event on Tuesday, Antonio Guterres said: “Crisis brings clarity here in London - the city of Dickens - it is clear that our world is facing a ‘tale of two crises.’
“A climate crisis is pushing us deeper towards higher temperatures and closer to catastrophic tipping points and an energy crisis exposing the folly of a world hooked on hydrocarbons.
“On the surface, these crises may seem separate, but they share the same destructive origin: fossil fuels”.
He added: “London isn’t just calling. It’s cooking.”
London hit with more than 3,000 lightning strikes overnight
Tuesday 23 June 2026 13:15 , Niva Yadav
London was hit with more than 3,000 lightning strikes in an overnight thunderstorm.
The storms woke thousands of Londoners from their slumber - all while the heatwave takes its toll on the capital.
The thunderstorm cell erupted overnight catching forecasters by surprise as it generated thousands of lightning strikes.
Met office says UK could see 45C heatwave by 2056
Tuesday 23 June 2026 13:05 , Niva Yadav
Met Office scientists have highlighted how events such as the infamous summer heatwave of 1976 could become significantly more intense in the future.
That summer remains one of the most significant weather events in UK history, with prolonged periods of heat and drought having a widespread impact on water resources, health and infrastructure.
The Met Office has developed a plausible “2056 scenario”, based on around 2.5°C of global warming, to show how a prolonged heat event similar to 1976 could evolve in the coming decades. - with UK temperatures reaching 45C.
This scenario is not a forecast of a specific future event, but a plausible illustration designed to help to understand how risks could change as the climate warms.
Met Office Chief Scientist Professor Stephen Belcher said:“Weather is the national conversation in the UK and the summer of 1976 lives on in many memories. Since then, our climate has fundamentally changed, with average UK summers having warmed by around 1.4°C. Crucially extremes have changed too.
"By using data from Met Office climate projections, we can glimpse into what an event like the 1976 summer would look like in the 2050s. It is a stark realisation to see the maximum temperatures reach 45°C.”
London hits 31C at lunchtime
Tuesday 23 June 2026 13:03 , Niva Yadav
Glorious sunshine is pouring over London, bringing highs of 31C at lunch time today.
An amber heat warning is in place until 11:59pm today as the hot spell casts across the capital.
But it’s about to ramp up....
By the time commuters leave their offices and head home, temperatures are forecast to hit around 35C.
The record temperature for June is 35.6C - meaning there’s every chance a record could be broken in the capital today.
Met Office map shows strikes hitting London
Tuesday 23 June 2026 12:55 , Niva Yadav
The Met Office’s Lightning Map shows the startling number of strikes that hit the capital overnight.
The map charts the series of strikes arriving from the west from around 1.45am, and battering London until after 6am.
You can see the strikes charted here.
Why is the heatwave so challenging?
Tuesday 23 June 2026 12:45 , Niva Yadav
This week’s heatwave is set to feel particularly challenging, even more so than May’s record-breaking one.
This is because it is far more humid. The Met Office has said that the dew point - the measurement of how much moisture is in the air - could rise to 22C.
In layman’s terms, it is harder for our sweat to evaporate into the air and thereby, harder to cool off and shed heat.
Woman dies after medical emergency on Dorset beach
Tuesday 23 June 2026 12:35 , Tom Place
A woman has died after suffering a medical emergency on a beach in Dorset on Monday.
Witnesses said that the woman was recovered from the water off Southbourne beach by members of the public at around 2.20pm.
Emergency services performed CPR, but the woman was shortly after pronounced dead at the scene.
The death is not being treated as suspicious.
Drivers urged to postpone journeys
Tuesday 23 June 2026 12:25 , Niva Yadav
Drivers have been urged by the RAC to postpone non-essential travel amid the heatwave, particularly motorists without air conditioning.
The RAC added that drivers should expect extended wait times for breakdown assistance.
Temperatures could reach 39C on Thursday
Tuesday 23 June 2026 12:17 , Niva Yadav
If you think today is hot, think again. Temperatures on Thursday could reach a maximum of 39C, most likely for somewhere in London or the South East.
Met Office spokesman Grahame Madge, said: “The Met Office is flagging 39C as a headline maximum temperature on Thursday, most likely for somewhere in London or the South East.
“Forecast temperature values are indicative and are subject to a slight range either side.
“It is possible we could see temperatures higher than the 39C if the final values are at the upper end of our narrow range.
“It is important to remember that the temperature value is only one element of this extreme heatwave story.
“The other major factor is the high humidity which for many will make the intense heat even harder to endure.”
Heading to watch England vs Ghana today? Stay cool with this interactive map
Tuesday 23 June 2026 12:15 , Niva Yadav
If you’re heading out this evening to watch England vs Ghana, air con should be at the top of your priority list with the temperature forecast to be 31C at kick-off.
An interactive map built by Sabot shows exactly where to stay cool if you’re hunting down somewhere to watch the match tonight.
You can explore the map here.
Alternatively, you can find the best spot to watch the game in London here.
World Cup 2026: Where to watch the England v Ghana game on big screens in London
Dramatic footage of last night's thunderstorms
Tuesday 23 June 2026 12:05 , Niva Yadav
Thunderstorms swept across London last night causing lightning strikes and flash flooding.
Footage shared on social media shows lightning strikes peppering the capital on Monday night.
What in clartation is going on with this storm in London.
— TacticalBrit (@TheTacticalBrit) June 23, 2026
Crazy thing to capture. #Thunderstorm pic.twitter.com/ka7M7p6q1x
Will it be hottest June day on record?
Tuesday 23 June 2026 11:55 , Niva Yadav
It’s getting hot in here. As temperatures continue to rise, a maximum of 36C is expected in London today.
To add insult to injury, high humidity across the capital will make this heatwave particularly uncomfortable.
If the mercury does hit 36C as is forecast, this would make today the hottest June day on record. The current record is set at 35.6C.
But, today’s new record will likely be short-lived as temperatures tomorrow are expected to soar to 37C.
Temperatures are set to soar on Tuesday 🌡️
— Met Office (@metoffice) June 22, 2026
Here's the 4cast for the day ahead ⬇️ pic.twitter.com/TtwVYEXyyG
Wembley Stadium relaxes water bottle policy for Harry Styles gig
Tuesday 23 June 2026 11:25 , Niva Yadav
Harry Styles fans are in luck as Wembley Stadium has relaxed its water bottle policy for future gigs due to the heatwave.
As temperatures are forecast to hit 35C, Wembley Stadium has confirmed that empty 500ml metal or hard plastic bottles will be allowed in the stadium.
Previously only clear plastic bottles without lids were permitted. Standing areas had to decant water into cups.
London's coolest places during the heatwave revealed
Tuesday 23 June 2026 11:25 , Niva Yadav
The Greater London Authority’s “Cool Spaces” list could help you to find some solace from the sun this week.
Libraries, community centres, sports centres, and religious spaces were all listed on last year’s database to help protect people during the heatwave. Drinking water stations have also been signposted on the map for Londoners to refill water bottles and hydrate in the heat.
The GLA map is intended to help reduce health risks from hot weather and to offer shelter from the sun on especially warm days.You can read the full story and see the map for yourself here.
Two houses set on fire by lightning strikes in London
Tuesday 23 June 2026 11:05 , Niva Yadav
The London Fire Brigade said two houses were alight on Monday night, believed to be caused by the lightning strikes.
The brigade responded to 400 calls overnight as thunderstorms prompted flash flooding across the capital.
Are thunderstorms linked to heatwaves?
Tuesday 23 June 2026 10:44 , Niva Yadav
It should come as no surprise that the heatwave brought thunderstorms with it. The two are very much linked.
The extreme heat and humidity during the heatwave warms the Earth’s surface and the air above it. As this hot air mixes with the cool air, it creates an unstable atmosphere that triggers the thunderstorms.
Usually, thunderstorms mark the end of heatwaves as the rain and lightning break up the hot air. But brace yourself, as this heatwave is only just beginning.
Eurostar cancels services due to heatwave
Tuesday 23 June 2026 10:37 , Niva Yadav
Eurostar has cancelled a number of trains to and from London this week due to the scorching temperatures expected during the heatwave sweeping Europe. Two services a day between London St Pancras International and Paris‘ Gare du Nord have been cancelled, with the train operator citing “adverse weather conditions”.
Eurostar trains cancelled between London and Paris amid UK and France heatwaves
Will schools be closed?
Tuesday 23 June 2026 10:35 , Niva Yadav
Several schools in London have announced plans to close or partly-shut during the heatwave.
The Department for Education said it does not normally advise schools to close during hot weather because attendance is “the best way for pupils to learn and reach their potential”, but that school leaders should ensure they take “any steps necessary to make sure children are safe and comfortable”, as it laid out guidance on how to keep pupils safe.
The list of schools closing over Tuesday, Wednesday, and Friday is growing.
You can find the full list here.
Full list of London schools closed or shutting early due to heatwave
Operators warning against travel to and from London
Tuesday 23 June 2026 10:33 , Niva Yadav
Numerous operators in London are warning against travel as the heatwave grips the capital.
In addition to travelling earlier in the day, to avoid peak sunshine, operators such as National Rail and Great Western are advising “essential travel only” while others have cancelled multiple routes.
You can find out exactly which services are running and what operators are saying here.
Which London train services are urging passengers not to travel in heatwave?
TfL network buckles under extreme weather conditions
Tuesday 23 June 2026 10:33 , Niva Yadav
The TfL network is buckling under the pressure of the extreme weather.
A total of six Tube lines were either fully suspended or partly suspended earlier this morning.
The Circle line was fully suspended due to a “signal system failure.”
Meanwhile, the Elizabeth line has no service between Heathrow Terminals 2, 3, and 4 due to flooding caused by the overnight thunderstorms.
You can keep up to date with travel chaos here as The Standard’s Tom Place reports.
29,000 lightning strikes in last 24 hours
Tuesday 23 June 2026 10:29 , Niva Yadav
As the heatwave takes its hold on London, the Met Office has reported 29,074 lightning strikes in the UK in the last 24 hours.
The majority of these were over Somerset, but the capital saw around 3,000 within a span of just two hours.
Wow, that was the largest lightning storm I've seen over London in some time. Almost 3,000 strikes recorded in the last two hours alone 🌩️
— James Cosgrove (@MrJamesCosgrove) June 23, 2026
And with first light at 3.55am, London has gone from complete darkness to thunderstorms to full daylight in the space of an hour! pic.twitter.com/SO6nZnjWzM
Red weather warnings ahead
Tuesday 23 June 2026 10:24 , Niva Yadav
The Met Office has issued red weather warnings for London in the coming days.
Red weather warnings means the heat is likely to bring impacts to health and could be a danger to life, as well as a risk to infrastructure such as power supplies and transport.
On Wednesday, the mercury is set to reach 37C while Thursday will see highs of 36C.
Friday shows no sign of respite with temperature back up to 37C before finally dropping to around 31C on Saturday.
Good morning
Tuesday 23 June 2026 10:24 , Niva Yadav
Brace yourself, London. Today’s warming up already with the mercury hitting 25C at 10am in London.
But it’s only going to get hotter with temperatures of 36C forecast for later today.
We’ll keep you updated with London’s latest as the heatwave takes a hold on the capital.
