Par
Alexandra Segond
Published on
It is so hot in recent days (and again for a long time) that they could go to the level of weather newspaper. However, as actu.fr announced this this weekend, thunderstorms will point the nose this week.
In question: less hot air from the Atlantic which will collide with the air burning already in place on France… Without however succeeding in making a real place there And to identify this scorching episode.
A conflict of air mass
Hot, then thunderstorms, then a little freshness, then the return of heat, and here is thunderstorms again … This Lightning / heat alternation punctuated all the month of July 2025. But not this month of August for the moment.
“Between Wednesday August 13 and Thursday August 14, 2025, there will be a whole period during which we will see thunderstorms emerge very locally», Summarizes withactu.fr Meteorologist Guillaume Séchet, founder of the Météoo- Villes.com site. The formation of these thunderstorms is explained by A traditional air mass conflict .
On the one hand, very hot air which weighs throughout the southern half of France, with an “exceptional level in the southwest”, specifies Météo France. The institution has placed ten departments in red vigilance “heat wave” since Sunday August 10, 2025 afternoon.
On the other side, a fresher (finally, less hot) air from the Atlantic “will try to infiltrate Wednesday evening from the West”, continues Guillaume Séchet.
An attempted thunderstorms that “makes pschitt”
We would be tempted to say that these few thunderstorms will bring a little respite. “Temperatures go stabilizeWith this stormy degradation that crosses France on Wednesday and Thursday, but it is not marked. Also, the heat will start again, ”said Météo France in a press point to which actu.frthis Monday, August 11, 2025.
The hot air “seems to resist well”, the development of thunderstorms in the plain «will actually do pschitt “
complete Guillaume Séchet. And even if there will be a few thunderstorms on the territory, they will be very localized (and very difficult to anticipate), decides founder of the weather site.com.
We will have some punctual thunderstorms in the plain in the west, but this stormy trend is much more marked in the mountainous regions than the Pyrenees, the Massif Central and the Alps.
A trend confirmed by the latest Météo France bulletin, which reports a “cloudy sky on the Atlantic facade, with some very locally stormy showers in Brittany, and in the afternoon on the alpine and Pyrenean relief”.
Side of the sky [mardi 12 août 2025]a risk of stormy downpour concerns the relief of Corsica and southern France in the afternoon. Stormy waves will circulate in the following evening and night in the south of the new Aquitaine.
No persistent thunderstorms, but stifling heat
And in addition to being very localized, These thunderstorms will not last due to a anticyclonewhich forms on the northern part of Europe and sends hot and dry air to France. “These few thunderstorms will evacuate from Friday August 15, 2025,” anticipates Guillaume Séchet.
Little risk therefore that the vacationers of August 15 are experiencing a small breath of fresh air for this prolonged weekend: despite a (very) slight respite on Wednesday and Thursday, the scorching heat wave seems to be intended to extend.
The heat will be especially stifling in the southwest of Francedue to a rise in hot and dry air from the Sahara which goes up by the Iberian Peninsula. Some scenarios report Several days under 40 ° C.
A “historic” episode to come
“I have never seen that, it could be A historic episode“, Smill Guillaume Séchet. Absolute records have already been broken, with 41.5 ° C recorded in Bordeaux-Merignac (Gironde) this Tuesday at 3:30 p.m. (according to Kernaunos) and even 41.6 ° C according to the weather channel, reports our editorial staff Bordeaux news.
What beat the old record of 41.2 ° C in July 2019. Note that the highest temperature in France was recorded this Tuesday in the village of Captieux (Gironde), with 42,9 °C.
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