Met Office: 2025 confirmed as UK’s warmest year since records began
The UK experienced its warmest and sunniest year on record in 2025, according to provisional figures published by the Met Office.
Data shows the UK recorded a mean temperature of 10.09°C during the year, making it the warmest since national records began in 1884.
It surpasses the previous record set in 2022 and means 2025 is only the second year on record where the UK’s average temperature exceeded 10.0°C.
The figures also confirm 2025 as the sunniest year on record, with 1,648.5 hours of sunshine across the UK.
This exceeds the previous record set in 2003 by more than 60 hours, based on sunshine records that date back to 1910.
Four of the UK’s five warmest years have now occurred within the past five years, and all of the ten warmest years on record have taken place since 2005, highlighting a long-term warming trend.
Head of climate attribution at the Met Office, Dr Mark McCarthy, said: “2025 was the warmest year on record for the UK, surpassing the previous record set in 2022, in a series dating back to 1884.
“We’re increasingly seeing UK temperatures break new ground in our changing climate, as demonstrated by a new highest UK mean temperature record just three years after the last record.
“This very warm year is in line with expected consequences of human-induced climate change. Although it doesn’t mean every year will be the warmest on record, it is clear from our weather observations and climate models that human-induced global warming is impacting the UK’s climate.”
The Met Office says new UK annual temperature records have now been set six times since 2000, in 2002, 2003, 2006, 2014, 2022 and 2025.
Seasonal data shows Spring and Summer 2025 were also the warmest on record, while Winter 2024/25 and Autumn 2025 both recorded above-average temperatures.
Met Office scientist Dr Emily Carlisle said: “While many will remember the long warm spring and summer of 2025, what has been noteworthy this year has been the consistent heat throughout the year, with every month except January and September warmer than average.
“In the six months from March to August, every month was at least 1°C above the 1991-2020 average. This resulted in the warmest spring and the warmest summer we have seen in this series.
“Meteorologically, the warmth has been driven largely by persistent high-pressure systems bringing prolonged dry, sunny conditions, alongside above-average sea temperatures around the UK. These factors have combined to keep temperatures consistently higher than normal for much of the year.”
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