Paris – 05/24/2026: France is experiencing an exceptional heatwave on May 24, 2026, affecting the country from the northwest to the southeast. In western cities such as Nantes, La Rochelle, and Brest, temperatures are expected to be 10 to 15°C above the seasonal average. This sudden and extreme temperature increase, influenced by a high-pressure system and warm air masses from North Africa, highlights the growing impacts of climate change on weather conditions.
The national average temperature is expected to set a new May record, surpassing the previous high of 22.9°C. Such early, intense, and prolonged heatwaves have been recorded twice as frequently since 2000 compared to before. Notably, there is a sharp contrast to the cooler weather just one week earlier, with temperature rises of up to 15°C in less than ten days.
Scientific studies confirm that such rapid temperature changes, so-called “thermal jumps,” are increasing worldwide due to climate change. This volatility strains human health, agriculture, and energy systems and requires swift adaptation. Researchers point to the destabilizing influence of climate change on atmospheric dynamics, including the jet stream and pressure systems.
This heatwave is expected to last until the Pentecost weekend and intensify, peaking on Monday or Tuesday. In the southwest, especially in southern Aquitaine, maximum temperatures above 35°C are forecast. Along the Atlantic coast, temperatures of 35°C in Nantes, 34°C in La Rochelle, and 33°C in Brest are expected, which is 10°C to 15°C above normal. On Friday, maximum temperatures of 35.2°C in Capbreton, 35.1°C in Belin-Béliet, and 32.9°C in Angoulême were already recorded in the south. In large parts of the west, May temperature records have already been broken or are expected.
This phenomenon is caused by a classic weather pattern: a warm air mass gradually moves from Morocco across the Iberian Peninsula to France. Additionally, the phenomenon of the “heat dome” occurs. These high-altitude high-pressure systems act like a lid that traps warm air and pushes it downward, further raising temperatures. This high-pressure system is expected to dissipate in the northeast of the country next week as cooler air masses arrive.
Due to climate change, such extreme weather events are occurring more frequently and intensely. France has experienced twice as many heatwaves since 2000 as before. This development requires adaptation strategies in various sectors to meet the challenges of the changing climate.
Sources
- Le Monde