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Heatwave live: Health alert extended to more areas; record-breaking day for Wimbledon

The UK Health Security Agency has extended its amber heat health alert to more areas of England, with temperatures reaching 33C - making it hotter than Mexico, Barbados and Jamaica. Follow the latest advice and updates below.

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UK summers are changing - here's why
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That's all for our coverage today

We're taking a pause on our weather coverage today.

But we'll be back tomorrow with all the latest on the heatwave hitting the UK.

Here are the key lines from today:

  • Jersey saw its hottest day in June on record today, with a maximum temperature of 33.4C. The soaring temperatures mean June 2025 is provisionally the warmest June on record in Jersey;
  • Temperatures climbed to 33.1C at London's Heathrow, while in Charlwood, Surrey, it hit 32.7C;
  • Large wildfires continued to rage through parts of Scotland;
  • Southern trains to and from Brighton and the coastal areas which travel via Burgess Hill and east Croydon saw disruptions to journeys;
  • The UKHSA and Met Office issued amber alerts to the following areas: West Midlands, Yorkshire and the Humber regions, East Midlands, South East, South West, London and East of England.
Jackets laced with water pipes and smart bottles - the tech solutions to the heatwave

By Mickey Carroll, science and tech reporter, and Megan Harwood-Baynes, health reporter

Heatwaves and hot days may often be described as "good weather", but heat can have a dangerous effect on the human body. 

From heat exhaustion to heat stroke, dehydration to water toxicity, it can be a minefield trying to stay cool - so the tech world is coming up with its own solutions to overheating.

Read more here...

What can we expect tomorrow?

Forecasters expect mercury levels to remain hot in the south of England tomorrow - as other parts of the UK begin to cool down.

Temperatures could either match today's figures or go up to 34C in the south, while the north of the country can expect to see highs of around 22C.

Here is a look at how tomorrow could play out...

Why are UK summers changing?

Scorching temperatures are sweeping across parts of the UK - and Europe.

It comes as a heat dome hovers over Europe.

While the UK sits just on the cusp of the dome, the high pressure is bringing high temperatures to southern and eastern England.

Northern and western Britain sit outside the area of high pressure, hence conditions there are cooler and wetter.

Here, our science correspondent Thomas Moore takes a look at what is happening with the weather...

A five-day forecast for London

As we reported earlier, the highest temperature reached in the UK so far has been recorded at London's Heathrow, where mercury levels hit 33.1C, according to the Met Office (see post at 6.07pm).

This is just 0.1C off the highest temperature of the year so far.

Temperatures are expected to remain high tomorrow before cooling down on Wednesday.

Here is what London's five-day forecast looks like...

Londoners cool off at Lido amid sweltering heat

As London sizzled in soaring temperatures today, some were spotted cooling off in Charlton Lido, in the southeast.

The current heat dome is hovering across most of Europe, while the UK sits just on the cusp of it.

That means the same high pressure bringing plus 40C temperatures to southern Europe is also roasting southern and eastern England.

Jersey sees hottest June day on record

Jersey has seen its hottest day in June on record today, with a maximum temperature of 33.4C.

Jersey Met reported today was the hottest June day since records began in 1894 in Jersey, exceeding the 33.2C on 17 June 2022. 

The soaring temperatures mean June 2025 is provisionally the warmest June on record in Jersey.

Temperatures expected to be hot again tomorrow

Sweltering temperatures are set to continue tomorrow, with mercury levels expected to match the figures seen today.

It will be hot and humid in the south again and most places will remain dry.

Health alerts will also remain in place, with an amber for many southern and eastern parts and lasting until 2 July.

Sky News meteorologist Christopher England notes though that temperatures could be slightly cooler away from the south and there may be some heavy showers in northern England and east Scotland. 

Wednesday will bring nearer average temperatures, although it will still a bit above in the South East.

In pictures: People face the heat in Lisbon

A heat dome hovered over parts of Europe today, while data from European forecasters suggested other countries were set to broil further in the coming days.

Heat warnings were issued for parts of Spain, Portugal, Italy and Germany with new highs expected on Wednesday before rain is forecast to bring respite to some areas later this week.

In Portugal, a reading of 46.6C was registered in Mora, about 60 miles east of Lisbon.

And Portuguese authorities issued a red heat warning today for seven of 18 districts.

Here are just a few of the images emerging from Lisbon today...

What do you need to know today?

Warnings over extreme heat have been extended across much of England today.

Temperatures climbed to 33.1C at London's Heathrow, while in Charlwood, Surrey, it hit 32.7C.

These high temperatures posed an obvious problem to the throngs of people waiting to for the opening of Wimbledon today, which saw its hottest first day on record.

Here are the other key lines so far: 

  • Large wildfires are continuing to rage through parts of Scotland. Firefighters have been working to control fires near Carrbridge and Dava, in the Scottish Highlands;
  • Southern trains to and from Brighton and the coastal areas which travel via Burgess Hill and east Croydon have seen disruptions to journeys;
  • The UKHSA and Met Office issued amber alerts to the following areas: West Midlands, Yorkshire and the Humber regions, East Midlands, South East, South West, London and East of England;
  • Large parts of mainland Europe have also seen high temperatures, with wildfires spreading south of Athens too.