Paris, France | AFP | Muser NewsDesk

The world experienced its second-hottest May on record, with Europe baking under an unusually early heatwave as climate extremes become the “new normal” on the continent, the EU’s climate monitor said Wednesday.

Records were broken in Britain, France, Ireland and Portugal last month as a heat dome of warm air from northern Africa pushed temperatures well above normal levels across western Europe.

Image: map - Average daily surface air temperature anomaly for (left) 11-19 May 2026 and (right) 21–30 May 2026 relative to the corresponding average for the period 1991-2020 (s. hottest May)
Average daily surface air temperature anomaly for (left) 11-19 May 2026 and (right) 21–30 May 2026 relative to the corresponding average for the period 1991-2020. Data source: ERA5. Credit: C3S/ECMWF

“The month was marked by a rapid transition from much cooler-than-average conditions to one of the most intense heatwaves ever observed this early in the year in western Europe,” the Copernicus Climate Change Service said in its May bulletin.

The “unusually early and intense heatwave demonstrates how quickly climate extremes are becoming the new normal rather than the exception”, said Samantha Burgess, strategic lead for climate at the European Centre for Medium–Range Weather Forecasts (ECMWF), which operates Copernicus.

“Feels-like” temperatures reached 35 °C to 40 °C across large parts of Europe, Copernicus said.

“The rapid transition likely increased impacts on populations, leaving little time for people -– or crops and ecosystems during growing season –- to acclimatise to much higher temperatures,” it said.

Globally, the average surface air temperature reached 15.81 °C — second only to May 2024, according to Copernicus.

The average sea surface temperature was also the second highest on record behind May 2024 as conditions shift towards the warming El Niño weather pattern.

Forecasts have warned that the coming El Niño could be one of the strongest on record, which could push global temperatures to historic highs in 2027.

Image: map - Anomalies and extremes in sea surface temperature for May 2026
Anomalies and extremes in sea surface temperature for May 2026. Colour categories refer to the percentiles of the temperature distributions for the 1991–2020 reference period. The extreme (“Coolest” and “Warmest”) categories are based on May rankings for the period 1979–2026. Values are calculated only for the ice-free oceans. Areas covered with sea ice and ice shelves in May 2026 are shown in light grey. The map outlines the Niño 3.4 region used to monitor El Niño conditions. Data source: ERA5. Credit: C3S/ECMWF

Temperatures stayed at “exceptionally high levels” across a swathe of the tropical Pacific, Copernicus said.

El Niño has an 80-percent chance of developing between June and August, increasing the risk of extreme weather events, the World Meteorological Organization said last week.

The last El Niño contributed to making 2023 the second-hottest year on record and 2024 the all-time high.

lt/tw

© Agence France-Presse

Article Source:
Press Release/Material by AFP
Featured image credit: C3S/ECMWF

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