‘Unprecedented’ changes in UK climate are normalising extremes, report says

In Greater London, the number of days over 30C and nights over 18C more than quadrupled in the last decade, compared with 1961-1990. Photograph: Anadolu/Getty Images

The UK’s climatic extremes are becoming increasingly normal, a report has found, with last year the hottest on record and further “unprecedented changes” likely to break the record again soon.

Data stretching back to 1884 shows the UK has never experienced a year as hot as 2025, according to the annual State of the UK Climate report, with temperatures pushed to dizzying heights by carbon pollution clogging the atmosphere.