Jon Henley in Paris and Sam Jones in Madrid

More than 350 French towns have recorded their highest-ever temperatures for May as France and the UK set national heat records amid an extreme early-summer heat event that could see the mercury rise to 40C in parts of Spain by the end of the week.

The UK’s Met Office said the country’s all-time record for May was broken when a temperature of 34.8C was recorded at London’s Kew Gardens.

Météo France said late on Monday that new monthly highs for May had been recorded at 352 weather stations mainly in western France, with the highest – 37.1C – registered near Hossegor, in the south-western department of Landes.

“This is an unprecedented event with a one in 1,000 chance of happening at this time of year based on the climate from 1979 to 2025 and virtually impossible in the preindustrial era,” Christophe Cassou, a climate scientist, told Le Monde.

More new highs are likely to be set in France, Spain and the UK, forecasters said, with temperatures exceeding norms by 12C or 13C in what Météo France described as a “premature, remarkable and long” heat episode expected to last several more days.

Source: https://www.theguardian.com/world/live/2026/may/26/europe-ukraine-russia-lithuania-eu-heatwave-hungary-magyar-france-latest-news-updates