2023-09-30 20:54:19
Endless summer? With September becoming by far the hottest ever measured in France, Germany, Poland and even Switzerland, the year 2023 continues to set records in Europe as in the rest of the world under the effect of global warming.
In France, continuing an uninterrupted series of almost two years of monthly averages above normal, September 2023 will end “between 3.5 and 3.6°C” above the 1991-2020 reference period, “ with an average temperature of around 21.5°C, announced the French meteorology and climatology service Météo-France on Friday during a press briefing.
In France, September 2023, which began with an exceptional late heatwave, will thus erase the previous records of 1949 and 1961 in the national archives which go back to 1900. “Only two months have ended with such a hot thermal anomaly: February 1990 (+4.0°C) and August 2003 (+3.7°C),” underlines Météo-France in its report.
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This month of September is part of an uninterrupted series of 20 months above seasonal norms, a benchmark calculated in meteorology over the last three decades and which therefore continues to increase with the accumulation of greenhouse gases. . From now on, the average monthly heat records in France have all been established in recent years, after 1990.
The temperatures of September 2023 are thus “slightly higher than the averages of July and August in France” over the period 1991-2020, although already marked by the effects of global warming.
In 2023, the summer was the fourth hottest in mainland France, not far behind previous records and marked by an unusual late heatwave at the end of August.
September then began with an extremely hot and late streak from the 3rd to the 11th, regularly exceeding 35-37°C in some areas. And the month of October will also be extraordinary: it could be 35°C on Sunday in the southwest of France.
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