Par
Briac Trébert
Published on
The heat wave that started on Friday August 8, 2025 on France is coming to an end. First confined to the south, with particularly high temperatures on the Mediterranean South, it has reached an exceptional level. Many records have been broken.
Place now for thunderstorms and a spectacular fall in mercury over the country in the coming hours, as we explain in this article.
In its 6h bulletin, Météo France thus placed 68 departments in yellow vigilance for risks of violent phenomena For this Tuesday, August 19, 2025 Tuesday. An instability which is expected to continue Wednesday August 20 and Thursday August 21.
The departments placed in vigilance at thunderstorms this Tuesday, August 19, 2025:
- Ain
- Combine
- Alpes-Maritimes
- Alpes-de-Haute-Provence
- Ardèche
- Ariège
- Dawn
- hears
- Aveyron
- Bouches-du-Rhône
- Calvados
- Cantal
- Charente
- Cher
- Corrèze
- Hollow
- Côte-d’Or
- Côtes d’Armor
- Dordogne
- Doubs
- Drome
- Essonne
- Eure-et-Loir
- Finistère
- Gard
- Gers
- Haute-Garonne
- Haute-Loire
- Haute-Marne
- Haute-Savoie
- Haute-Saône
- Haute-Vienne
- High-alpes
- Hautes-Pyrénées
- Hauts-de-Seine
- Hérault
- Ille-et-Vilaine
- Internal
- Isère
- Jura
- Loire
- Loiret
- Lot
- Lot-et-Garonne
- Lozère
- Some
- Mayenne
- Morbihan
- Nièvre
- Orne
- Paris
- Puy-de-Dôme
- Pyrénées-Orientales
- Rhône
- Sarthe
- Savoy
- Saône-et-Loire
- Seine-St-Denis
- Seine-et-Marne
- Tarn
- Tarn-et-Garonne
- Val-d’Oise
- Valley
- Our
- Vaucluse
- Yonne
- Yvelines
Gusts of wind, hail, and accumulated of significant precipitation
This Tuesday, August 19, 2025, this rainy and stormy degradation will in particular concern a large southeast quarter of the country, between the Massif Central and the Alps, but will be spread (also) towards Burgundy-Franche-Comté at the end of the day. The stormy cells can be strong, accompanied by gusts of wind, hail and especially cumulative significant precipitation, warns the weather organism.
And elsewhere, the weather will also be agitated, especially on the side of Brittany where other thunderstorms can also give locally important accumulations of rain. Temperatures will record a clear drop this Tuesday throughout the territory.
In the afternoon of this Tuesday, August 19, 2025, the most sustained thunderstorm rains will extend to a large south-east quarter, from Occitania and Provence-Alpes-Côte d’Azur at Auvergne Rhône-Alpes and to Burgundy. They will be accompanied by gusts of wind, sometimes hail, and will give cumulative water sometimes important. In Brittany too, thunderstorms will multiply in the afternoon, sometimes leading to significant accumulation.
And it wanders Wednesday
Under the influence of a depression returning to the west of France, storms will still concern, this Wednesday, August 20, 2025, a large part of the territory, with locally violent phenomena, again. The accumulation of rain can be important on Wednesday “on the Basque country and half east of the country”, already anticipates the weather organization.
The drop in temperatures will continue on Wednesday. They will even often pass below seasonal averages with regard to the maximums when they have sometimes been 10 ° C above the climatological averages in recent days … The change of time promises to be radical.
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