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[INTERNATIONAL] · Germany, Italy, France · 4 sources

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Europe rivers record lowest summer discharge since 1992

European rivers recorded their lowest average discharge rates during the summer since data collection began in 1992, according to the Copernicus Climate Change Service (C3S). Major waterways, including the Rhine, Danube, Po, Loire, Rhône, and Seine, experienced record or near-record low water levels during July and August.

This reduction in river flow has placed significant pressure on irrigation, hydropower, freshwater availability, and the cooling of nuclear reactors, highlighting links between climate change and energy security.

Simultaneously, the seas surrounding Europe experienced unusually high temperatures. Marine heatwaves were reported along much of the Atlantic coast and in the western and central Mediterranean. These heatwaves can exacerbate heat stress in coastal areas by limiting nighttime cooling and increasing humidity.

For the continent as a whole, the summer was the third warmest on record. Western Europe saw its warmest summer since records began, with an average temperature of 21.7 degrees Celsius, which is 2.5 degrees above the 1991–2020 average.

Entities

Copernicus Climate Change Service · Danube · Europe · Pô · Rhine

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