The UK is hurtling towards unprecedented climate extremes, with 2025 officially confirmed as the hottest year on record since data collection began in 1884. The trend is stark: four out of the last five years have ranked among the top five warmest on record, driven by escalating carbon emissions that trap heat in the atmosphere.
Regions from Kent to Lincolnshire have seen their average hottest day of the year soar by 4.5°C over the past decade compared to the 1961-1990 baseline. In Greater London, days exceeding 30°C and nights above 18°C have quadrupled since the same period.
The report, published in the International Journal of Climatology, reveals a grim picture of a UK climate transforming at an alarming rate. While average rainfall has increased overall, with very wet days up by over 20% since 1961-1990 and rainfall intensity rising by 5%, droughts are also on the rise.
England and Wales experienced less than half their average spring rainfall in 2025, leaving England's rivers at near-record lows from March to August. This paradox of increased rainfall alongside more frequent droughts underlines the complex challenges facing the UK's changing climate.
The report's findings come as the country struggles through its third major heatwave this summer, following two earlier events in May and June that claimed an estimated 2,700 lives in England and Wales. The Met Office has confirmed that the UK has already matched the number of days above 30°C recorded during the notoriously hot summer of 1976.
Fire services are working to contain blazes across the country, with experts labelling the situation a 'firewave'. Liz Bentley, head of the Royal Meteorological Society, warned that "The way we experience climate change most is through the weather extremes," and that these changes, long predicted by scientists, are now having a profound impact on daily life in the UK.