Weather: Humid and cool… after a stormy weekend, what weather to expect for this first week of autumn ?

Le temps sera encore instable cette semaine. Illustration Unsplash

Après un dimanche particulièrement orageux dans l’Hérault et le Gard, quel temps fera-t-il cette semaine, la première de l’automne ?

After storms in Hérault and Gard this Sunday, September 22, which marked the first day of autumn, the week is looking very seasonal. Humidity and coolness are on the agenda.

While they are no longer on orange alert, the departments of Gard and Hérault are on yellow flood alert this Monday, September 23, while storms move eastward, to Paca and the Alps.

“From the west of Rhône-Alpes to Languedoc-Roussillon, drier weather and beautiful clearings set in from the morning. Elsewhere, the calm weather at the start of the day does not last”, this Monday, indicates Météo France which predicts new locally thunderstorms in the West of the country.

La Chaîne Météo reports a general instability that will persist all week and is due to the “return of the jet stream”, “powerful high-altitude wind that can strengthen depressions on the ground into storms or increase the violence of storms”, recalls the site.

Risk of a surge wind

From Wednesday, new disturbances should affect a large northern half. A gust of wind could also sweep the northern half, estimates the Météo channel. “Between Wednesday and Friday, secondary lows could break away from the vast Atlantic low pressure system and circulate over part of France. The north of the country could be affected by these phenomena", forecasters estimate.

While it is still a little early to make predictions for the following week, Météo France is seeing a trend towards a return to temperatures "closer to seasonal norms". "A slightly wetter weather is expected in the northern half of France."