Paris – 25.05.2026: France is experiencing an unprecedented heatwave in May 2026 with temperatures above 35°C in parts of the country. This sudden and extreme change, influenced by a heat dome and warm air masses from North Africa, underscores the impacts of climate change on weather phenomena.
The western cities Nantes, La Rochelle, and Brest are recording temperatures 10 to 15°C above seasonal norms. This rapid and extreme change, influenced by a heat dome and warm air masses from North Africa, highlights the effects of climate change on weather phenomena.
The national average temperature is expected to set a new May record, surpassing the previous high of 22.9°C. These early, intense, and prolonged heatwaves are becoming more frequent, with France experiencing twice as many heatwaves since 2000. This current event is already the fourth time in the 21st century that France has encountered extraordinary heat during a Pentecost weekend – following 2005, 2017, and 2022.
These sudden temperature changes, called “thermal jumps,” are intensified by climate change. Scientific studies confirm that such rapid temperature changes are increasing worldwide. Since 1961, over 60% of global regions – particularly in Europe, Asia, and North America – have experienced more frequent, intense, and faster transitions. In a medium greenhouse gas emissions scenario, their frequency is expected to continue rising and impact most world regions by the end of the century. These quick shifts from cold to hot are becoming especially common, while shifts from hot to cold continue to occur despite global warming.
These extreme temperature fluctuations pose a challenge for society. They allow little time for adjustment by people, ecosystems, and infrastructures. They can have health consequences – such as increased risks for cardiovascular or respiratory diseases – or affect agriculture, for example by increasing the risk of late frosts, as was the case in France in 2021. Energy systems are also affected: heating and air conditioning may be needed within a few days, making energy demand harder to predict.
Météo-France, the national weather service, has already noted a warming of 2.1°C since the early 20th century and recorded twice as many heatwaves after 2000 compared to before. This development aligns with projected climate trends and requires adaptation strategies at multiple levels of society.
The current weather conditions in France are a clear sign of the challenges posed by climate change. It is important that both the government and the population take measures to adapt to these changes and minimize future risks.
Sources
- Le Monde