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As extreme weather continues to trigger climate conversations globally, the need for trusted scientific information has never been greater.

The Copernicus Climate Change Service (C3S) is launching 17 new projects under its National Collaboration Programme (NCP), converting C3S climate data into practical tools for users across Europe and beyond.

A new study published in Nature Climate Change uses the Copernicus Climate Change Service's (C3S) ERA5-HEAT dataset to provide a comprehensive global-scale analysis of how heat stress has evolved since 1950. Using the Universal Thermal Climate Index (UTCI), the study shows that hazardous heat is becoming more frequent, more intense and more widespread, with hotter nights, longer heat stress seasons and increasing numbers of people exposed to hazardous heat.

June 2026 saw much of Europe hit by an intense heatwave, leading to record monthly temperatures across the western part of the region. The month was also the second warmest globally, as reported in the latest Climate Bulletin by the Copernicus Climate Change Service (C3S).

As climate change continues to shape weather patterns around the world, helping people – from policymakers to business leaders to the general public – understand what rising average temperatures mean in context is becoming increasingly important.

The Copernicus Climate Change Service (C3S) has expanded its Climate Data Store (CDS) with a new suite of datasets. Spanning the atmosphere, land, ocean, cryosphere and water cycle, these additions provide new opportunities to explore how the Earth system is changing and how those changes affect people, ecosystems and infrastructure.

Record-breaking ocean temperatures in the tropical Pacific and an exceptionally early and intense heatwave across western Europe were among the defining features of May 2026, according to the latest Climate Bulletin from the Copernicus Climate Change Service (C3S).

Western Europe experienced an unusually early and intense heatwave during the second half of May 2026, mainly between 21 and 30 May. The largest temperature anomalies were observed across western France, England and Wales, where daily average temperatures reached more than 10°C above average, according to ERA5 data.

The European Centre for Medium-Range Weather Forecasts (ECMWF) is preparing to release ORAS6, the latest generation of its ocean and sea-ice reanalysis system. The new dataset, that underpins the ERA6 reanalysis, represents a significant upgrade in the way historical ocean conditions are reconstructed and is expected to strengthen climate monitoring, forecasting and Earth system reanalysis activities in the years ahead. On World Oceans Day ECWMF, that implements the Copernicus Climate Change Service C3S, has released a new article that explores the advantages of the new system.

The Normandy landings of 6 June1944, known as D-Day, saw the land, air, and sea forces of the allied armies undertaking the largest amphibious invasion in military history. The operation, which went by the code name Operation Overlord, was initially planned for 5 June, but the weather forecast for that day predicted stormy conditions in the English Channel, causing the invasion to be postponed.