UK heatwave map shows exactly where in Britain faces scorching three-day 33C heat blast
High-level weather warnings are now in place across five areas of the UK as the nation faces the fourth heatwave of summer 2025. Temperatures are expected to soar into the mid-30s within the next 24 hours, with a heat health alert issued as of 9am this morning across London, the West Midlands, the East Midlands, the South East, and the East of England.
As of yesterday (Monday, August 11), a total of 234 local areas were seeing heatwave conditions, with the warm blast spreading across most of England apart from areas in the North East and Cumbria, as well as coastal areas in the East and South.
Now, an easy-to-use interactive map allows Brits to see whether or not their area will be affected.
Check if your area is in heatwave conditions today by typing your postcode into the following interactive map:
According to the official definition set by the Met Office, temperatures must have risen above 28C for three consecutive days for those areas to be experiencing a true heatwave. This means one sunny afternoon in the garden simply won't cut it.
Interestingly, this definition differs across the country, with a slightly lower threshold of 27C in some parts of the South East, while this threshold drops again to just 25C in the South West of England, most of Wales, Northern England, Wales, and Northern Ireland. You can find out more about the Met Office's definitions of heatwave thresholds here.
Temperatures approached 30C in various parts of the country yesterday, with areas of central and southern England set to meet heatwave criteria by midweek.
The Met Office has warned that this latest wave will impact the health sector's capacity to deliver important services. The weather is expected to lead to "overheating" in indoor environments of community and care settings, as well as issues managing medicines.
It's understood the sector is also bracing for staffing issues due to "external factors", including transport delays and increased power demand exceeding capacity.
Dr Paul Coleman, Consultant in Public Health at the UK Health Security Agency, has issued the following statement: "Temperatures are forecast to rise above 30°C across central and southern parts of the country over the next few days, and generally hot weather is expected across most regions of England.
"These kinds of temperatures can result in serious health outcomes across the population – particularly in those who are vulnerable, such as the elderly or those with serious health conditions - so it is important that everyone takes sensible precautions while enjoying the sun.
"If you have friends, family or neighbours who are vulnerable, it is important to ensure they are aware of the forecasts and are following the necessary advice. Check in on them if you can to make sure they know that hot weather is on the way and how to keep themselves safe."
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