UK summer 2025 forecast hotter with more heatwaves and searing temperatures

Britain is likely to bake in 2025 with a much hotter summer in store following a record-breaking sunny and dry spring. The Met Office forecasts show increased chances of heatwaves as the summer season progresses. May recorded above average temperature with the forecast showing the summer season of June, July, and August will go even higher . Even though Britain is unlikely to experience prolonged period of heat, the summer season will have several hotter days.

The island nation's summer will be 2.3 times more hot than normal, the Met Office predicted. More heatwaves but no prolonged period of hot weather is part of the the three-month prediction.

During the spring season, Britain witnessed 630 hours of sunshine between March 1 and May 27 with very little snow and rain fall making it the driest in over a century. A major indication of the summer being hotter was the temperature recorded on the last day of meteorological spring on May 31 which was 8C above average with Heathrow recording 26.7C.


UK's average summer temperature is between 10 and 17C with southeast England warmest with 16-17C.

One of the prime reasons behind the higher temperature prediction is the ongoing extreme marine heatwave in north-west European waters. The sea surface temperatures around UK coastlines are currently 1.5-2.5C warmer than average and could result in the summer temperature rising higher.

A warmer weather and high moisture content can also mean more intense summer storms throughout the country. However, the rainfall and wind speed during the summer season is not forecast to have any abnormal behaviour and will be near average.

According to the UK Met Office data, the number of “hot” days, which is measured as the temperature hitting 28C, has more than doubled and “very hot” days (30C) more than tripled for 2014-23 compared with three-decade period between 1961-90.

England witnessed extreme heatwaves in 2022 with temperature crossing 40C for the first time in recorded history.