Met Office maps show where temperatures could 'reach or exceed' 34C in UK on Monday
Temperatures in parts of the UK could reach 34C on Monday - which would be just the fourth time this has happened in June since the 1930s.
Current Met Office forecasts say the mercury is set to hit 34C in London and the East Midlands.
But the weather agency said it could even exceed that and approach the June record of 35.6C, recorded in Southampton and London in 1976 and 1957 respectively.
The Met Office has warned that it won't be hot everywhere, however, with a "marked difference" in temperatures in northwestern parts of the UK.
It comes as a second amber heat health alert in two weeks came into force on Friday.
The alert, which covers London, the East Midlands, South East, South West and East of England, will last until 6pm on Tuesday.
The UK Health Security Agency also issued a yellow alert for Yorkshire and Humber and the West Midlands for the same time period, with the agency warning of significant impacts across health and social care services.
The Met Office said that while not everywhere across the UK will experience a heatwave, temperatures are rising in the southern half of the UK as we head into next week.
Chief meteorologist Matthew Lenhert said: "Sunday will be another hot day quite widely across the southern half of the UK, with temperatures forecast to reach 31°C in the south east of England.
"Temperatures will be higher still on Monday, with highs of 34°C possible in central and eastern parts of England. This coincides with the end of Glastonbury with lots of people traveling home, and the start of Wimbledon so people should be prepared for some hot and humid conditions. Stay hydrated and try to keep out of the sun during the hottest part of the day."
He also warned that overnight temperatures will remain high, with the mercury not dropping below 20C, which is known as a tropical night.
Lenhert added: "Tuesday will be another hot day, though the highest temperatures will be more confined to the south east of England where 35°C is possible. Fresher air will move in from the west through the middle of the week, bringing an end to this heatwave.
"It won't be hot everywhere, with a marked difference in northwestern parts of the UK. Cloud and some heavy rain will affect Northern Ireland and western parts of Scotland through Monday and temperatures will be suppressed to the mid to high teens."
The below maps demonstrate the extent of the heat on Monday and Tuesday.
Read more: I'm a neuroscientist. Here's what summer does to your brain (The Independent)
Temperatures are likely to reach or exceed 34°C on Monday, which has only occurred in June in three years previously, since 1960 🌡️ pic.twitter.com/ZYJR0sKz7v
— Met Office (@metoffice) June 29, 2025
A heatwave is classed by the Met Office as a period of at least three consecutive days with daily maximum temperatures meeting or exceeding the heatwave temperature threshold.
This threshold varies depending on the county in England, Scotland and Wales, while Northern Ireland has its own single threshold.
In London, for example, this threshold is 28C, while it is 27C on the south east coast, and 25C in Wales, Scotland and Northern Ireland.
Here, Yahoo News UK also breaks down, using Met Office forecasts, what the weather will be like for each region over the coming days.
Monday
Largely dry and sunny. Feeling hot or very hot and humid for inland areas, with light winds. Some onshore sea-breezes developing, which will help to keep coastal areas slightly cooler. Maximum temperature 34C.
Tuesday to Thursday
Largely dry and sunny, probably hot or very hot Tuesday. Small chance of isolated thunderstorms. Showery rain clearing on Wednesday. Notably cooler. Chance of heavy and thundery rain on Thursday.
Monday
Early murk in the southwest will soon lift and clear leaving a widely dry, sunny day. Becoming very warm or hot by the afternoon, with light winds for all. Maximum temperature 28C.
Tuesday to Thursday
Feeling much fresher from Tuesday with a few bright spells, but cloudier skies bringing some patchy rain too, this becoming heavy on Thursday and carrying the risk of thunder.
Monday
East Midlands: Largely dry and sunny. Feeling hot or very hot and humid, with light winds. Some onshore sea-breezes developing keeping coasts slightly cooler. Chance of isolated thunderstorms developing in the afternoon. Maximum temperature 34C.
West Midlands: A warm but bright start, becoming hot with plenty of sunshine through the day and light winds. Outside chance of a shower but it should be largely dry. Maximum temperature 33C.
Tuesday to Thursday
East Midlands: Largely dry and sunny, probably hot on Tuesday. Small chance of isolated thunderstorms. Showery rain, locally heavy and possibly thundery on Wednesday. Notably cooler. Probably drier and brighter on Thursday.
West Midlands: Feeling fresher from Tuesday with cloudier skies bringing outbreaks of rain at times, though some brighter, drier interludes as well. Winds generally light with temperatures closer to the July average.
Monday
Early low cloud on western hills soon clearing to give a mostly fine and dry day, with sunny spells. Chance of isolated thunderstorms in the afternoon. Very warm and humid. Maximum temperature 27C.
Tuesday to Thursday
Cloudy with outbreaks of showery rain on Tuesday and Wednesday, perhaps locally heavy and thundery at times. Drier and brighter on Thursday. Feeling notably cooler and fresher. Light winds.
It's hot for some today and even hotter tomorrow 🌡️There are some simple things you can do to keep yourself safe in the heatBe #WeatherReady and plan your activities to avoid the hottest part of the dayCheck out more tips from our partners 👉 https://t.co/2l1osxn6cJ pic.twitter.com/nZR0B9ZYzx
— Met Office (@metoffice) June 29, 2025
Monday
Cloud across Cumbria gradually breaking, with sunny spells for most by the afternoon. The outside chance of a shower later but it should be largely dry. Very warm or hot. Maximum temperature 28C.
Tuesday to Thursday
Feeling fresher from Tuesday with cloudier skies bringing outbreaks of rain at times, though some brighter, drier interludes as well. Winds generally light with temperatures closer to the July average.
Monday
Dry and bright at first and becoming warm or very warm again. Cloud thickening from the west with outbreaks of heavy rain later in the afternoon and evening. Maximum temperature 24C.
Tuesday to Thursday
Plenty of dry and settled conditions with some warm sunshine. The odd heavy shower around, but dry for most with light winds.
Monday
Some bright spells during the morning, mainly in the east. Outbreaks of rain developing, turning heavy and perhaps thundery at times through Fermanagh and the west. Maximum temperature 20C.
Tuesday to Thursday
Plenty of dry and settled conditions with some warm sunshine. The odd shower around, but dry for most with light winds.
Monday
Rather murky to start in the north, but skies will soon clear to leave a dry and fine day. Very warm or hot, especially in the sunshine, with light winds. Maximum temperature 29C.
Tuesday to Thursday
Feeling much fresher from Tuesday with a few bright spells, but cloudier skies bringing some patchy rain too, this sometimes heavy on Thursday. Winds generally light, with temperatures near average.
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