Thames Valley to hit 34C as 2025's fourth heatwave arrives in the UK
Southern areas, including Buckinghamshire, Berkshire, Oxfordshire and the outskirts of London, such as Heathrow, may reach the mid-30s.
The UK Health Security Agency (UKHSA) has issued heat health warnings for all of England, with the East Midlands, West Midlands, East of England, London and the South East having been upgraded to amber from 9 am on Tuesday to 6 pm on Wednesday.
Yellow heat health warnings are in place for the rest of England.
The agency has warned of significant impacts across health and social care services due to the high temperatures, including the potential for a rise in deaths, particularly among those aged 65 and over or with health conditions.
Wednesday could bring 33C to 34C heat to eastern England, including Lincolnshire, South Yorkshire and East Anglia, and Thursday may see 29C to 30C in London and East Anglia.
Monday's highest temperature was 31.9C at Heathrow.
Seasonal averages are generally between 18C and 22C in Britain, and go up to 23C for London.
Met Office meteorologist Greg Dewhurst said on Monday that the UK is on day two of the heatwave and there is 'overall a very hot, very warm week to come'.
The Met Office defines a heatwave as temperatures meeting or exceeding a certain threshold for three consecutive days or more.
This is 25C for most of the UK, but rises to 28C in London and its surrounding area, where temperatures are typically higher.
He said: 'As we go through the week, there's lots of sunshine and the air isn't really going anywhere … that sort of then hangs around.
'It's drawing in at the moment and then sort of stays across the UK for the rest of the week.'
Fire spread around three hectares of grass in Wanstead Flats, east London, on Monday afternoon.
Wales may see its hottest day of the year on Tuesday but temperatures are not expected to break 2025 records in other parts of the UK.
England's high for 2025 stands at 35.8C recorded in Faversham, Kent, on July 1.
On Monday, officials warned that England is suffering from 'nationally significant' water shortages despite rain in July.
England is seeing widespread environmental and agricultural impacts from the lack of water, which is hitting crop yields, reducing feed for livestock, damaging wetlands and river wildlife, and increasing wildfires, the group said.
Experts warn climate change is driving more extreme weather conditions in the UK, worsening drought and dry spells, and making heatwaves more frequent and severe.
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34 minutes ago
- Yahoo
In cramped, sweaty Hong Kong, climate change is making things worse for the poorest
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CBS News
3 hours ago
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Heat wave returns to Colorado this week with temperatures forecast to reach almost 100 degrees
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