France Battles Fifth Heatwave of 2026 with 78 Departments on Orange Alert

On August 12, 2026, France is experiencing a widespread heatwave, marked as the country's fifth significant heatwave this year. Météo-France has issued an orange alert for 78 departments, while 15 others remain on yellow alert, reflecting elevated temperatures and health risks across much of the nation.

Temperatures are expected to soar above 30°C in most parts of France, with southern plains between Rouen and Strasbourg forecasted to reach highs of 35 to 39°C. The north of France anticipates slightly cooler yet still intense heat with temperatures ranging from 30 to 34°C. Early morning minimums will mostly stay above 20°C along the western and southern coasts, indicating sustained warm conditions through the nights.

Seine-Maritime is one such department under the orange alert, with inland temperature forecasts between 34 and 37°C and coastal areas registering 28 to 32°C. Nighttime temperatures here are not expected to fall below 16°C in most areas, except slight variations like 21°C around Le Havre. In response, local authorities have activated the heatwave management protocol. Emphasis is placed on protecting vulnerable populations, including the elderly, disabled, children, and those with chronic conditions. Local mayors have been urged to verify the safety of at-risk residents and consider opening cooling centers.

The prefecture has also recommended postponing or canceling outdoor sports events during the heatwave to prevent heat-related illnesses. Public health advice includes staying hydrated, maintaining a normal diet, cooling off with mist or showers, avoiding outdoor activities during peak heat periods, and wearing light clothing.

While thunderstorm activity is expected to decrease nationwide, some rain showers are possible in the Pyrenees, Alps, and Corsican mountains. Most of France will continue experiencing high humidity levels, mainly due to perspiration.

This extensive heatwave follows previous episodes this summer and represents a significant challenge for public health and safety enforcement. Authorities continue monitoring its progression with further temperature increases anticipated later in the week.