Par
Julien Sournies
Published on
The more the days advance, the more the heat becomes suffocating in Lyon and in the department of the Rhône in general. For good reason: since June 18, 2025, mercury has not descended below 30 ° C in the capital of Gaul, thus making the nights and the days that are difficult to support.
In the coming days, namely this Monday, Tuesday and Wednesday, it will be worse: temperatures will indeed remain scorching, flirting almost with the 40 ° C bar.
But this episode of extreme heat will soon be behind us, at least temporarily, according to the forecasts of Guillaume Séchetweather expert and founder of the Météo-Lyon site.
A considerable drop in temperatures in the coming days
It will indeed have to be patient before “breathing better”. If thunderstorms could break out at the end of the afternoon this Monday, giving way to a brief moment of freshness, the thermometer will display 38 ° C, or even 39 ° C in Lyon until Wednesday, July 2. “A priori, the 40 will not be reached,” confirms Guillaume Séchet to News Lyon.
Only, while the heat could have “persisting for a long time in Lyon”, the weather will gradually to fall over As of this Thursday, July 3. In question? “There will be a transitional period with the arrival of a much less hot air from the West,” said the weather expert.
We will go from a layer of Saharan air, with this extremely hot air from the Mediterranean basin, to a more oceanic and therefore less warm influence.
Towards temperatures below seasonal averages
On the temperature side, the drop is indeed notable. According to Météo-Lyon, the mercury will reach “only” 32 ° C to the maximum of the day this Thursday, that is to say a drop of 6 ° C compared to the day before. During the coming days, especially this weekend, where showers are envisaged, the thermometer will also continue to decrease.
“We are going to return to less excessive temperatures at the end of the week and early next week. This heat will make nights less painful. The Lyonnais will therefore have the opportunity to recover better, ”announces the meteorologist.
At such a point that “the temperatures are even parties to switch below seasonal normal,” adds Guillaume Séchet. Also according to Météo-Lyon, the thermometer could indeed go down to 24°C This Monday, July 7, 3 ° C less than the seasonal averages in the capital of Gaul.
A “less intense” heat wave in mid-July
But these “fresh” temperatures will not last eternally in Lyon. “If they will be much less hot for several days, a heat wave must return to the surroundings of July 14. But, a priori, it should be less intense Let the current one warns the meteorologist.
If it is nevertheless cautious, the meteorologist indicates that the current heat wave could be the worst of summer “as we are at extremely levels students».
But, indeed, nothing is played in advance: “Fortunately we have layers of oceanic air which allow summers to be less unbearable. But in recent years, it is more the Saharan air layer that dominates. And what is likely is that in the future, in France and in Lyon, we no longer have this ocean current which allows us to cool off. »»
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