Back-to-school week in France will be marked by “a remarkable episode of late hot weather” over much of the country, often with over 30°C or even 35°C, Météo-France announced on Friday, a week after a exceptional heat wave. “As of Sunday and especially Monday, an episode of strong late heat will set in from the Southwest,” writes the forecaster.
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“Excluding relief and coastal regions, 30°C will often be reached during the day” on Sunday “south of the Loire” and “peaks of 33-34°C will be possible locally in the south” under dry and clear skies. “Monday, an extremely warm air mass for the season should encompass a large western part of the country,” warns Météo-France. Monday is the hottest day, the very hot threshold (above 35°C) could be exceeded in the southern half.
“Combined with strong sunshine and offshore winds, the level of maximum temperatures promises to be particularly high over a large part of New Aquitaine, with often 35 to 37°C, or even locally 38°C”, according to the weather establishment. “Elsewhere, highs will often be between 28 and 32°C, but 25 to 28°C near the northeastern borders. “According to data gathered by our colleagues from The weather channel, the heat wave thresholds will be particularly close to being reached in Lyon (Rhône), Cahors (Lot) and Bordeaux (Gironde), if the temperatures remain high for three days and three nights in a row. Temperature records for the month of September are also possible in certain regions.
According to forecasts, “these high temperatures are expected to last much of next week, gradually moving north and east.” The Friday night models predicted “no real refresh…until at least next weekend” or even the start of the following week, around September 11th. “Thus, the duration of this episode of late heat, combined with its intensity, promises to be remarkable across the country,” concludes Météo-France.
This episode comes after the heat wave that enveloped France from August 17 to 24. It is the longest and most intense ever measured beyond August 15 and is consistent with the observations of climatologists, according to which human-induced climate change not only increases the severity of heat waves but also their earliness or their occurrence. late. The 2023 summer heat wave mainly affected a large southern half of the country, reaching a duration and intensity comparable to the historic 2003 heat wave in the Provence-Alpes-Côte d’Azur and Occitanie regions.
