A new sign of global warming, a particularly early heat wave is expected from Wednesday in France, with temperatures between 35 and 38°C in the southern half, in a context of drought which already raises fears for crops.
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This time, we will speak of a heat wave because the temperatures will be higher than during the heat wave in May, with minimums around 20°C at night and more than 35°C during the day, according to La Chaîne Météo*.
This heat wave promises to be exceptional in its precocity and intensity.
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This heat wave is linked to the rise of a torrid subtropical air mass over the country, driven by a depression off Portugal which will act as a real heat pump.
Consequently, the strong heat already present at the beginning of the week in the south will extend to the whole country between Wednesday and Thursday.
It will indeed be a scorching heat wave since some regions will experience at least three consecutive days of strong heat with temperatures 5 to 15°C higher than average, often between 20°C at night and more than 35°C. C during the day.
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This episode of very strong scorching heat is expected from Wednesday to next Saturday over a large part of the country.
The regions most exposed to this heat wave concern the south and center of the country with maximum temperatures sometimes close to 35 to 39°C, or even locally 40°C in the Aquitaine basin and the Mediterranean hinterland.
In the north, we expect 30 to 35°C, with peaks around 37°C on Friday and next Saturday.
Very heavy nights
As we arrive at a time of the year when the days are the longest, the heat accumulated during the day will have difficulty evacuating at night.
As a result, the nights will be heavy, especially in large cities, with temperatures struggling to drop below 20°C, increasing the feeling of discomfort.
The regions north of the Seine and near the Channel seem less impacted, thanks to the fairly sensitive northeast wind which would limit the intensity of this heat to a peak of strong heat between Friday and Saturday.
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This week's episode comes after a particularly hot and dry spring which caused drought in much of France, raising fears for crops and creating conditions conducive to fires.
In this context, more and more departments are implementing water use restrictions.
As of June 12, 35 departments had issued decrees to this effect, according to the official Propluvia website, compared to 22 ten days ago.
*The Weather Channel is a property of the Figaro group.
