Climate Change - According to recent data from Météo France this summer was marked by regional disparities. The South-East recorded an excess of +2.5°C in Nice, compared to the period 1970-2000, greater than Brittany which recorded +0.3°C in Brest for example. The Provence-Alpes-Côte-d'Azur region experienced its sixth hottest summer since 1947. Nice and the Alpes-Maritimes was particularly affected by the heat the July-August period was the second hottest" for the city, which "has experienced tropical nights without interruption since July 6th". It should however be noted that during the summers of 2022 and 2023, some regions warmed as much, or even more than the South-East. In 2023, for example, Clermont-Ferrand was +3.2°C compared to the 1971-2000 average and Dijon +2.9°C, according to Météo-France data.
For the second year in a row, Mediterranean Sea temperatures have broken records this summer. On August 15, the daily median temperature of the Mediterranean Sea surface reached an unprecedented 28.47°C, according to Copernicus Marine. "Since August 6, sea surface temperatures in the region have been above 28°C, marking the longest period above this threshold”.
For two successive summers, the Mediterranean will have been warmer than during the exceptionally hot summer of 2003, when a daily median of 28.25°C was measured. These marine heatwaves are becoming more and more frequent due to rising temperatures, because the seas and oceans absorb 90% of excess heat, according to the UN. With harmful consequences for biodiversity, such as coral
