Climate change is increasingly reshaping Britain’s weather, with provisional data indicating that this summer is set to be the warmest on record for the country.
According to provisional statistics from Britain’s Met Office, the summer of 2025 will “almost certainly” become the warmest summer on record for the country since records began in 1884.
The new figures would move 2018 off the top spot and push 1976 out of the top five warmest summers, the office said in a report released earlier this week.
From June 1 to August 25, Britain’s mean temperature stood at 16.13 degrees Celsius, about 1.54 degrees above the long-term meteorological average and well above the current record of 15.76 degrees set in 2018.
Met Office scientist Emily Carlisle said that unless temperatures fall by 4 degrees below average for the remainder of August, which the forecast does not suggest, it looks like the current record will be exceeded.
“Of course, there are still a few days left of meteorological summer to go, but it’s very unlikely anything will stop summer 2025 from being the warmest on record,” said Carlisle.
The summer of 1976 is still one of the most memorable in British weather history. That year, multiple locations across England experienced heatwave-like conditions for more than two weeks. There were 16 days in which temperatures exceeded 32 degrees Celsius, compared with nine such days during the summer of 2025.
While this year has not seen as many intense spikes in extreme heat, what sets 2025 apart is the consistency of the warmth.
Meteorologists explained that this persistent warmth is driven by a combination of factors, including dry ground from spring, dominant high-pressure systems, and unusually warm seas around the country, creating an environment where temperatures rise quickly and linger.
Both maximum and minimum temperatures have been significantly above average, with minimum temperatures rising especially sharply, the report noted.
Between 1991 and 2020, Britain’s mean summer temperature was 14.59 degrees Celsius, over 0.8 degrees higher than the period from 1961 to 1990, it added.
Climate projections show that future summers in Britain are set to become hotter and drier, a trend already evident in recent years.
Experts noted that climate change has the power to turn previously unremarkable years into record-breaking ones, as baseline conditions steadily rise.
They added that the four heatwaves observed this summer, which in the past might have been seen as pleasant spells of warm weather, are made more prominent against a backdrop of global warming.
(Cover: An aerial view of the dried-up bed of Rudyard Lake Reservoir during the drought in Leek, the UK, August 22, 2025. /VCG)
Climate change drives Britain toward hottest summer on record
