The UK has recorded its hottest day of the year so far, with a provisional temperature of 33.2C measured in Charlwood, Surrey on Saturday, according to the Met Office. This surpasses the previous high of 32.2C recorded in Kew, west London on Thursday.
The hot weather has triggered an official heatwave across England and Wales after three consecutive days of high temperatures. An amber heat-health alert from the UK Health Security Agency (UKHSA) remains in place for all regions of England until 9am on Monday, warning of significant impacts on health and social care services, including a potential rise in deaths among vulnerable groups.
Meanwhile, scattered thunderstorms are expected to mix with the high temperatures. A yellow thunderstorm warning covers northern England from 3pm Saturday to 4am Sunday, with up to 40mm of rain possible in less than two hours, along with frequent lightning, large hail and gusty winds.
Met Office meteorologist Jonathan Vautrey noted that Northern Ireland provisionally recorded its warmest June night on record. He added that Wales, Northern Ireland and Scotland all recorded their warmest day of 2025 on Friday, though conditions are expected to be slightly cooler for the latter two on Saturday.
Sunday will bring sunny spells and showers, with highs around 27-28C, but conditions will feel fresher in the west. By Monday, temperatures are expected to return closer to the June average, providing more comfortable sleeping conditions.
