A historic early summer heatwave is sweeping across Europe, bringing with it a cascade of broken all-time temperature records that have left communities and authorities grappling with a growing public health emergency. Over the weekend of June 27-28 2026, the unprecedented heat pushed thermometers past century-old benchmarks in multiple nations, marking one of the most intense early-season heat events ever recorded on the continent.
Germany became a focal point of the extreme conditions, notching a new national all-time high temperature for the second consecutive day. According to provisional data from the country’s national meteorological service, the town of Möckern-Drewitz in the eastern state of Saxony-Anhalt hit 41.5°C on Saturday. This reading surpassed the 41.3°C record set just 24 hours earlier in Saarbrücken, a city near the French-German border. German authorities have moved quickly to address public discomfort and risk: in Berlin, police deployed two water cannons to spray cooling mist over crowds of heat-weary residents, a measure that provided much-needed relief to thousands struggling with the sweltering conditions.
The heatwave, which first emerged on the Iberian Peninsula before expanding north and east, claimed new national records in other parts of the continent as well. The Czech Republic’s national meteorological service CHMI confirmed a new all-time high of 40.8°C measured at a station in Doksany, north of the capital Prague. In Denmark, forecasters recorded a provisional national record of 37°C in Odum near the city of Aarhus, breaking the previous benchmark of 36.4°C that had stood since 1976. Switzerland extended its streak of broken June heat records to three straight days on Saturday, when Basel in the country’s north reached 39°C, the hottest June temperature ever recorded in the alpine nation.
Currently, an estimated 150 million people across Europe are enduring temperatures above 35°C, according to preliminary impact assessments. The World Meteorological Organization has issued a stark warning that the prolonged extreme heat will deliver major damage to both public health and regional ecosystems. Since the heatwave began a week ago, hundreds of fatalities across the continent have already been linked to the high temperatures. Spain’s MoMo mortality monitoring system recorded 327 heat-associated deaths between the previous Sunday and Thursday, while in France, at least 55 people have died from drowning amid a surge in people seeking cooling in open water—two-thirds of these fatalities occurred in unmonitored swimming areas with no lifeguards on duty.
Meteorologists have explained the extreme conditions as the result of a slow-moving, persistent high-pressure system commonly called a “heat dome.” “Underneath the high pressure system, sinking air compresses and warms, lifting temperatures day by day,” explained Ben Rich, lead weather presenter for the BBC. “The skies have remained largely cloud-free, allowing strong sunshine to heat things up even more.”
Climate scientists have long warned that Europe is warming faster than any other continent on Earth, a trend driven by factors including rapid Arctic heating and shifting jet stream patterns. A rapid attribution analysis by the World Weather Attribution network found that a heatwave of this intensity so early in the summer would have been virtually impossible without human-caused climate change. The group concluded that climate change is unequivocally to blame for the event.
Looking ahead, the extreme heat is expected to persist through the weekend and into Monday, with temperatures as high as 40°C still possible in many affected regions. However, forecasters say a cooler air mass developing in western Europe will gradually move eastward across the continent, bringing much-needed temperature relief by the end of the coming week.
German politician Katrin Goering-Eckardt, former leader of the Green Party, framed the event as a clear call to action on climate, writing on social media platform X: “This heat isn’t pleasant summer weather. It’s a health crisis.”