2025 likely to be UK's hottest year on record, says Met Office

The expected new record of 2025 has been built on persistent heat through the spring and summer.

Those long, hot, sunny days may feel like a distant memory as we head towards Christmas, but both spring and summer were the UK's warmest ever recorded.

Each month from March to August was more than 2C above the long-term average between 1961 and 1990.

Temperatures peaked at 35.8C - well below the highs of more than 40C seen in July 2022 - but hot spells happened repeatedly.

Four separate - albeit relatively short-lived - heatwaves were declared across much of the country.

The UK Health Security Agency also issued several heat-health alerts through the summer.

Mr Kendon said longer spells of hotter days and nights posed an increased risk to elderly and vulnerable people.

He told the Today programme it would also have an impact on the agriculture sector, influencing which crops farmers are able to grow in the UK.

Spring and summer were also marked by low rainfall. Spring was particularly dry - the UK's sixth driest since 1836.

Combined with the warm weather helping to dry out the soils, this lack of rainfall pushed large parts of the country towards drought.

Through the summer, official droughts were declared across several regions in England and Wales, by the Environment Agency and Natural Resources Wales respectively.

Parts of eastern Scotland also entered "significant water scarcity", according to the Scottish Environment Protection Agency.

Recent rainfall has eased the situation across much of the country and most areas are no longer in official drought. But water levels are still below average in some places.

"There's a huge deficit to be made up, and there's a huge implication, not just for people who are farming the land [and] growing food, but our rivers, our aquifers, our availability of drinking water," said Jess Neumann, associate professor of hydrology at the University of Reading.

The repeated swings between drought and flooding were making it very hard for communities to adapt to increasing weather extremes, she added.

The prolonged dry, warm weather created ideal conditions for wildfires too.

By late April, the area of the UK burned by wildfires had already reached a new annual record, according to data from the Global Wildfires Information System going back to 2012.

More than 47,100 hectares (471 sq km or 182 sq miles) has now been burned throughout 2025 - smashing the previous high of 28,100 hectares of 2019.

Andy Cole, chief fire officer at Dorset & Wiltshire Fire and Rescue Service, said firefighters in his region had responded to more than 1,000 wildfires this year - an "unprecedented" number, he said.

"I've been doing this for over 20 years and we've seen a marked increase in the number of fires we're having to deal with in the open," he told the Today programme.

As the UK continues to heat up - driven by humanity's greenhouse gas emissions - scientists expect the UK to experience more weather extremes.

"The conditions that people are going to experience are going to continue to change as they have in the last few years [with] more wildfires, more droughts, more heatwaves," said Dr Doherty.

"But also it's going to get wetter in the winter half-year, so from October to March [...] the rain that does fall will fall more intensely, and in heavier rain showers, causing that kind of flooding that we've been seeing this year as well," she added.

The UK has not been alone in experiencing extreme heat this year. The world is on course for its second or third warmest year ever recorded, according to the European Copernicus climate service.

But the international consensus on tackling climate change is also being tested, with the US and some other leading producers of fossil fuels rowing back on their net zero commitments.

Additional reporting by Justin Rowlatt, Kate Stephens and Zahra Fatima