BERLIN/MILAN/LONDON, June 27 – Europe continued to battle one of its most intense early summer heatwaves on Saturday, as record breaking temperatures spread farther east, placing millions of people under dangerous heat alerts and putting increasing strain on transportation networks, power generation, healthcare services, and water supplies. From Germany and Denmark to the Czech Republic and Italy, authorities reported unprecedented temperatures while governments urged residents to stay indoors, conserve water, and avoid unnecessary travel.
The prolonged spell of extreme heat has already been linked to dozens of deaths across the continent. Scientists say the intensity of the event reflects a broader trend of increasingly severe heatwaves that are becoming more frequent as the global climate continues to warm. Although weather forecasters expect conditions to gradually ease in some western regions during the weekend, eastern Europe is still facing several days of unusually high temperatures.
Record Temperatures Rewrite the Weather Record Books Across Europe
Saturday brought another wave of extraordinary weather records as several European countries registered their highest temperatures ever recorded for either June or for any time of the year.
Germany experienced some of the hottest conditions in its recorded history. According to the German Meteorological Service, the town of Moeckern-Drewitz in the eastern state of Saxony-Anhalt reached a preliminary temperature of 41.5 degrees Celsius, surpassing the previous record of 41.3 degrees Celsius that had been set only one day earlier near Saarbruecken close to the French border.
Berlin also struggled under the intense heat, with temperatures climbing to around 39 degrees Celsius. The situation became so severe that local police deployed water cannons in public areas, not for crowd control but to lightly spray residents seeking relief from the oppressive conditions. Large crowds gathered around fountains, shaded parks, and public cooling stations throughout the German capital.
Neighboring Denmark also experienced an extraordinary day. The Danish Meteorological Institute reported a temperature of 37 degrees Celsius north of Aarhus, marking the country’s highest recorded temperature since official weather observations began in 1874.
The Czech Republic joined the growing list of nations breaking records after the Czech Hydrometeorological Institute measured 40.9 degrees Celsius north of Prague, establishing a new national high.
Switzerland also registered its hottest June temperature on record, adding to a growing list of weather milestones recorded throughout western and central Europe earlier in the week. France and the United Kingdom had already experienced exceptionally high June temperatures before the heat shifted eastward.
In Slovakia, officials confirmed that Bratislava had recorded its warmest night on record, highlighting another dangerous aspect of the heatwave. High nighttime temperatures prevent buildings and people from cooling down, increasing health risks, especially for older adults, children, and individuals with existing medical conditions.
Climate researchers explained that such prolonged periods of intense heat have become significantly more likely because of long term global warming. They noted that nighttime temperatures of this magnitude would have been exceptionally rare only a couple of decades ago.
German federal lawmaker and former Green Party parliamentary leader Katrin Goering-Eckardt described the situation on X by stating that the current heat should not be viewed as ordinary summer weather but as a serious public health emergency.
Heat Places Pressure on Infrastructure, Water Supplies, and Public Services
The relentless heat has stretched public infrastructure well beyond normal operating conditions across much of Europe.
German authorities issued extreme heat warnings across nearly the entire country as temperatures remained above seasonal averages. Meanwhile, much of Poland also experienced temperatures well above 30 degrees Celsius as the heatwave advanced eastward.
The unusually high temperatures have also affected Europe’s rivers, creating new challenges for electricity production. In Hungary, warmer water in the Danube River forced the Paks Nuclear Power Plant to reduce output from one of its reactors to comply with environmental safety requirements. Earlier in the week, Switzerland’s Beznau Nuclear Power Station temporarily shut down its reactors because water from the River Aare had become too warm for normal cooling operations.
France continues to face significant consequences from the prolonged heat. Government officials have linked dozens of deaths to the ongoing extreme temperatures. In addition to the tragic loss of life, the heat has disrupted railway operations, reduced electricity generation efficiency, prompted temporary alcohol restrictions in certain communities, suspended classroom activities, and forced organizers to postpone or cancel outdoor events.
French authorities also announced that the country’s annual summer sales period would be extended after retailers experienced weaker customer turnout during the hottest days of the heatwave.
Italy remains under widespread heat alerts. The Italian Ministry of Health placed 18 cities, including Rome, Milan, Florence, Turin, Venice, Genoa, and Bologna, under its highest red alert level for both Saturday and Sunday.
The River Po, Italy’s largest river, continues to experience dramatically reduced water flow. Environmental experts warn that seawater is moving farther inland because of the lower river levels, increasing risks for agriculture, freshwater ecosystems, and local communities that depend on the river.
Even mountain regions traditionally known for cooler temperatures offered little comfort. In Bolzano, located in Italy’s South Tyrol region, city meteorologist Dieter Peterlin reported that overnight temperatures never dropped below 25.4 degrees Celsius, establishing a new June nighttime record. Scientists and environmental experts continue to express concern that persistent high temperatures could accelerate glacier melting across the European Alps.
Travel Disruptions Grow as Forecasters Predict Gradual Weekend Relief
The intense heat has forced transportation companies to take precautionary measures aimed at protecting both passengers and infrastructure.
Germany’s national railway operator, Deutsche Bahn, allowed passengers holding long distance tickets to cancel or postpone journeys through the beginning of next week without additional charges. Another rail operator, National Express, temporarily suspended portions of its services in North Rhine-Westphalia during Saturday afternoon because of concerns that extreme temperatures could damage railway tracks.
Road networks have also suffered. Near Hamburg, one of Germany’s busiest motorways experienced damage after the asphalt expanded and cracked under the prolonged heat, leading authorities to partially close a major traffic lane while repairs were carried out.
Organizers of major public events across Europe also introduced emergency adjustments. Lausanne Pride in Switzerland increased the number of drinking water stations and medical response teams available along its parade route. In Milan, organizers delayed the city’s Pride march until late afternoon in an effort to reduce participants’ exposure to peak daytime temperatures.
Sporting competitions have not escaped the effects of the weather either. Organizers of the Ironman European Championship in Frankfurt shortened both the cycling and running segments of the race to help reduce health risks for competitors.
Meteorologists say the current heatwave has been strengthened by an atmospheric pattern known as an Omega block. This weather system traps a large dome of hot air over the same region for an extended period while preventing cooler air from moving in. The pattern has allowed temperatures to remain well above seasonal averages across much of Europe for several consecutive days.
Weather forecasts indicate that western parts of Europe may begin to receive some relief as thunderstorms develop during the weekend. Paris authorities have already announced early closures of parks, gardens, and the Canal Saint-Martin swimming area because of expected severe storms.
Despite the approaching change in weather for some regions, officials continue urging residents across Europe to remain cautious. Health agencies recommend limiting outdoor activity during peak afternoon hours, staying hydrated, checking on elderly neighbors and vulnerable family members, and closely following guidance issued by local authorities as eastern Europe continues to face dangerously high temperatures heading into the final days of June.