Heatwave Eases in Western France as Southeast Endures Persistent Heat

As of August 16, 2026, the western half of France is experiencing relief from the intense heatwave, with departments shifting to yellow or green alert levels, indicating less concerning weather conditions. Meanwhile, the southeastern quarter of France continues to face sustained heatwave conditions, with extreme temperatures expected to persist until midweek, according to Météo-France.

In the northern Hauts-de-France region, heatwave conditions officially ended on Sunday, August 16, with temperatures gradually decreasing and a refreshing northern breeze bringing humidity and clouds. Morning temperatures ranged from 16°C in Abbeville and Nouvion to 17°C in Lille and Lambersart, while afternoon highs fell to around 27°C in Saint Omer and Valenciennes, though some areas like Compiègne and Beauvais still reached 30°C. Despite improvements, air quality remains generally degraded, and parents are advised to keep infants under one year old out of direct sunlight, even in the shade. The UV index stands at 6.

Beachgoers in the north can expect slightly cloudier skies, with sand temperatures between 23°C and 26°C and swimming water temperatures around 21-22°C. A westerly airflow is anticipated to bring elevated clouds and possible light showers by Wednesday, stabilizing temperatures before a further decline later in the week.

These developments mark a geographic variation in the heatwave's impact, with southern and eastern regions enduring ongoing heat stress while western and northern areas begin to cool down, providing some relief to residents and authorities managing fire risks and health advisories.