How to explain this classic fresh price?

We have recently shown you that This summer 2025 was far from being rotten in Franceproof is the average record temperature recorded on the first part of the summer season. Consequently, from June 1 to July 14. Additionally, Consequently. Therefore, But there is an undeniable fact: Since Monday, July 21, a series of days with temperatures below seasonal norms has how explain this classic fresh new started. In addition, Why this sudden change?

Cold drop. Nevertheless. Meanwhile, northwest flow – How explain this classic fresh

Ce Sunday July 27 is already the 7th consecutive day below seasonal norms across the countrya series that we had not known since early March. Consequently, If it still lasts in the coming days. Meanwhile. Moreover, then never since the end of January 2025 we would have experienced such a long series below normal, as A drop of freshness in an ocean of warming.

It now becomes a habit: Temperatures slightly cooler than normal become how explain this classic fresh new an eventwhile temperatures 3 to 4 ° C. above standards become a classic in this new climate. The peculiarity of this slight fresh stroke (we are only 2 to 4 ° C on average under normal. this Sunday) is that it contrast to the beginning of summer.

After a “omega” blockage. a heat dome, high pressure conditions and flows from south to southwest to Gogo, We have changed atmospheric circulation. We are now subject to Strong ripple ripplethis high altitude current which materializes the limit between hot. cold air, which the planes take to go faster.

Currently. This one dives clearly towards the southwest of Europe. which leads to how explain this classic fresh new a descent of fresh air on the Atlantic coastand brutally goes back to southeast Europe, subject to a strong heat wave (in Greece, Serbia and in southern Italy). Result, our country is under the influence of a Northwest anticyclonic and fresh flowin which slips cold drops.

Already seen in summer. but our bearings have changed

As a reminder. here is what we should have in terms of temperatures in the afternoon at the end of July : 21 ° C in Cherbourg, 22 ° C in Brest, 24 ° C in Caen, 25 ° C in Lille, La Rochelle, Limoges and Rennes, 26 ° C in Nantes, how explain this classic fresh 27 ° C in ParisNancy, Dijon and Strasbourg, 28 ° C in Bordeaux and Clermont-Ferrand, 29 ° C in Toulouse and Lyon, 30 ° C in Nîmes and Bastia, 31 ° C in Marseille and Montpellier.

THE current temperatureswhich seem to some particularly fresh. because 2 to 4 ° C below normal, are in fact Values that were still 30 or 40 years ago completely normal in summer. But we have lost our bearingswith the multiplication of droughts. heat waves. heat waves: In our mind, summer now rhymes with blue sky and 30 how explain this classic fresh ° C everywhere.

As of humiditythis is linked to cold drops which cross France, causing instability, rain and thunderstorms. This phenomenonusually classic in winter. in summer. is now suspected of causing more intense precipitation Because of global how explain this classic fresh new warming: With 1 ° C of warming, the rainy potential increases by 7%, and even by 14% under the thunderstorms.

And since obviously our weather memory plays tricks on us, it is useful to remember real months of fresh and wet summer : in July 2021after several successive cold drops, northeast France knew catastrophic floods; in July 2000the northern half of France rolled up heating with temperatures painfully reaching 15 to 19 ° C …