Expected Record Confirmation

The Met Office is expected to confirm that the UK experienced its hottest summer since records began in 1884. Provisional figures for June, July and August are due to be released on Tuesday afternoon, with forecasts indicating that mean temperatures—including both daytime and overnight values—have broken the previous record set just last year.

The announcement comes as wet and windy weather hits parts of the UK on the first day of September, with five flood alerts in place for England and unsettled conditions forecast across the North West and Scotland. The meteorological summer, which ended on Monday, saw several records tumble as five heatwaves affected the country.

The Met Office previously indicated that the UK was on course for its hottest summer on record, provided temperatures remained around average for the rest of August. It is expected that final figures for the month will confirm the record.

Record-Breaking Summer

According to BBC reporting, the summer featured five widespread heatwaves and 40 days of temperatures above 30C (86F), smashing the previous record of 34 days. Temperatures of 35C or higher were recorded on 10 separate days, surpassing the previous record of five days set in 1976 and matched in 2020. A temperature of 37C or higher was recorded on three separate days, also a new record.

The highest temperature of the summer was 38.1C (100.6F) at Kew Gardens in London on 13 August, which provisionally made it the UK's fifth-hottest day on record but did not exceed the all-time high of 40.3C (104.5F) measured at Coningsby, Lincolnshire in July 2022.

The heat was persistent, with one heatwave at the end of meteorological spring breaking the UK's May temperature record by more than 2C. July and August brought further heatwaves, including one that lasted for three weeks in some locations and another that delivered the highest temperature of the year.

Regional Variations and Dry Conditions

England and Wales are both expected to set new records, while Northern Ireland is likely to come close but Scotland will fall short, according to the BBC. The intense heat occurred partly because of how dry it was for much of the summer, with some areas seeing no measurable rainfall for more than two months. Drought was declared in all of Wales and more than two-thirds of England, and wildfires caused devastation in parts of the country.

Most of England and the whole of Wales remain in drought, and experts say drought conditions will continue to worsen until there is sustained rainfall across the country, as reported by Kent Online and the Evening Standard. Rain did fall in early June, and wet weather returned in the second half of August, bringing some flash flooding. Sheffield recorded over a month's worth of rain in the week of 24-30 August—more than the city had seen across the rest of the season combined.

Despite the dryness, this summer is not expected to break any records for dryness across the UK as a whole.

Context and Climate Change

The record-breaking heat is in line with evidence that summers are getting hotter, with more intense and frequent heatwaves as a result of human-induced climate change, according to BBC reporting. Records are being broken more often and by bigger margins.

The UK sits on the western edge of Europe, the fastest-warming continent on Earth, warming at roughly twice the global rate. Land heats up faster than the oceans, parts of Europe stretch into the rapidly warming Arctic, and changes in weather patterns have favoured more frequent and intense summer heatwaves.

All five of the UK's hottest summers on record have occurred since 2000. Until last year, the margins between them were tiny: the four hottest were separated by just five hundredths of a degree. The record jumped by 0.34C in 2025, and research suggests such big jumps become more likely if the climate is warming rapidly.

Summer 2025 is currently the UK's hottest on record, with a mean average temperature across June, July and August of 16.10C, beating the previous seasonal high of 15.76C set in 2018, according to Kent Online and the Evening Standard.

The Met Office began recording this temperature data for the UK in 1884 and usually confirms its provisional seasonal figures on the first day of the new season.