Western Europe records hottest June in history as heatwaves intensify

A month of shattered records

June 2026 was the hottest June in Western Europe's recorded history. According to the EU's Copernicus Climate Change Service, average air temperatures in the region reached 20.74°C, a full 3.05°C above the 1991-2020 average, beating the previous record set in June 2025. Globally, it was the second warmest June ever, with temperatures 1.39°C above the pre-industrial baseline.

These records indicate a climate system that continues to accumulate heat. The consequences are increasingly intense heatwaves and growing risks for populations, ecosystems, and infrastructure.

Heatwave succession and ocean heat

The June heatwave did not occur in isolation. It followed an unusually early and intense heatwave in May, and by early July, another extreme heat event was already building across western parts of the continent. Ocean surface temperatures also set a new June record globally, with the western Mediterranean and North Atlantic particularly warm. Copernicus noted that rapidly developing El Niño conditions in the tropical Pacific added further heat to the global system.

Wildfire devastation across southern Europe

Severe drought and extreme temperatures combined to fan wildfires, especially in France and Spain. In France, flames consumed more than 35,000 hectares (four times the seasonal average) and claimed the life of a 22-year-old firefighter in the Alps. Spain saw over 55,000 hectares burned, and Barcelona set a new all-time temperature record, hitting 40.5°C. The EU activated emergency mechanisms as the burned area across the bloc ran 56% above normal for this time of year.

Health impacts and public warnings

The heat had direct health consequences. Copernicus reported that the June heatwave caused heat-related deaths in several European countries. In the UK, where daytime temperatures were forecast to reach 34°C and last up to ten days, a survey found two-thirds of the population experiencing severe insomnia due to exceptionally high nighttime temperatures. Health authorities across Europe warned of increased mortality risks from the extreme heat, though final figures were still being assessed.