🌡️ Second-warmest May globally sees record-breaking temperatures and intense heatwave in western Europe.
The Copernicus Climate Change Service (C3S) has published its latest monthly Climate Bulletin, focusing on key climate trends for May 2026.
📈 The bulletin reports that May 2026 was the second-warmest May globally, with an average surface air temperature of 15.81°C, which is 1.42°C above the estimated pre-industrial level (1850–1900).
It also reports that the average temperature over Europe was 13.87°C, or 0.60°C above the 1991-2020 average for May.
Around 20 May, one of the most intense heatwaves ever observed this early in the year affected western Europe, following a rapid transition from cooler-than-average to warmer-than-average conditions.
This transition and contrast is visible in this data visualisation based on C3S data. The image on the left shows the cooler-than-average temperatures observed between 11 and 19 May, whereas the image on the right shows conditions which were warmer than average between 21 and 30 May.
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