UK weather: Heat health alerts about to come into force as temperatures to soar

May 22, 2026 - 14:20

Official heat health alerts are about to come into force across large parts of the UK as temperatures are expected to climb sharply over the coming days. Many areas are set to reach official heatwave thresholds, with thermometers widely hitting the high 20s and low 30s Celsius heading into next week.

The alerts, issued by the UK Health Security Agency, will cover several regions and are designed to warn vulnerable people and healthcare services about the potential risks from the hot weather. The warning levels vary, with some areas placed under a yellow alert, meaning the heat is likely to affect those who are particularly sensitive, such as the elderly or those with pre-existing health conditions.

Forecasters predict that the warm spell will build through the weekend, with the hottest conditions expected early next week. While the south and east of England are likely to see the highest temperatures, much of the country will experience a significant rise above the seasonal average.

Public health officials are advising people to stay hydrated, keep out of the sun during the hottest part of the day, and check on older relatives or neighbours. The heat is expected to last for several days before a potential breakdown in conditions later in the week.