Thunderstorms in Île-de-France: Yellow alert on Friday afternoon, July 17.

Météo-France keeps Paris and the Île-de-France region under yellow thunderstorm alert this Friday, July 17, 2026. After a stormy night, more showers are expected in the afternoon, as temperatures finally dip back below 30°C.

Storms continue to hammer Paris (75) and Île-de-France this Friday, July 17, 2026. After a night in which several storm cells erupted, accompanied by a few showers, Météo-France keeps the region under yellow thunderstorm vigilance, from the capital to the outer ring, including Hauts-de-Seine (92), Yvelines (78) and Val-d’Oise (95). More impacts of the weather are expected this afternoon, in an unstable air mass that ends the heatwave and significantly lowers temperatures.

Which departments in Île-de-France are under a yellow thunderstorm alert?

The yellow thunderstorm alert covers the entire Île-de-France region. The affected areas are Paris (75), Seine-et-Marne (77), Yvelines (78), Essonne (91), Hauts-de-Seine (92), Seine-Saint-Denis (93), Val-de-Marne (94) and Val-d'Oise (95). We’re tracking the hour-by-hour evolution on the Météo-France vigilance map, continuously updated for the region.

Friday's thunderstorms, July 17: what time will they occur and what phenomena should we expect?

After the nocturnal storms and their scattered showers, a new batch is lining up for the afternoon. The cells are reforming from midday and moving through until early evening, in a window roughly de midi à 19h according to Météo France. In the most exposed areas, these storms can locally bring gusts of wind that can be quite strong, hail, intense downpours in a short span, and pronounced electrical activity. Between bursts, the sky clears, but you’d better keep an eye on it.

Has the heatwave ended in Île-de-France?

Good news accompanying these storms: the heatwave is finally loosening its grip. Daytime highs dip back below 30°C, well off the peaks seen in recent days. We break down this lull in our briefing on the end of the hot spell in Paris and on the return of rain in Île-de-France.

What precautions should you take during thunderstorms?

A few simple precautions are enough to get through this day under surveillance. Avoid taking shelter under trees, postpone walks in the forest and along the water, and secure anything that could be blown off balconies and terraces. Caution remains essential on the parched uplands, where lightning can spark fire starts, as the Fontainebleau forest has just emerged from a fierce blaze. Before going out, a quick look at the transport disruptions in Île-de-France is in order; they remain numerous this week. And for a dry-out day out, our guide of things to do this Friday, July 17, 2026 in Paris and our ideas for the July 17–19 weekend are full of good plans to enjoy safely indoors.

This page may contain AI-assisted elements, more information here.