Overview

• Météo-France has classified this as an 'épisode de chaleur précoce,' with temperatures expected to remain 4°C above seasonal norms for several days.
• The 25°C heat threshold will be surpassed across much of northern France starting mid-week, with Île-de-France likely to see highs near 30°C on Friday.
• Meteorologists attribute the heat to a depression off Portugal, drawing warm air from North Africa and creating an unusually hot air mass at 1,500 meters altitude.
• Cities like Reims could reach highs of 27°C on Wednesday, while Nouvelle-Aquitaine is forecast to see temperatures between 24°C and 26°C.
• Though rare, similar early heat episodes occurred in 2005, 2018, and 2024, underscoring the growing frequency of unseasonal warmth in spring.