Europe is facing one of its most severe heatwaves in recent history, with temperatures exceeding 40°C across several countries. The extreme weather has forced school closures, disrupted rail services, strained power networks, and raised serious public health concerns. According to the World Health Organization (WHO), heat remains the deadliest weather-related hazard in Europe, with more than 1,300 excess deaths reported since June 21 during the ongoing heatwave.
Climate Change Is Intensifying Europe’s Heatwaves
Experts say climate change is making European heatwaves hotter, longer, and more frequent. Rising global temperatures, combined with weather patterns such as heat domes and atmospheric blocking, trap hot air over large regions for days, preventing temperatures from dropping.
Health specialists warn that prolonged exposure to high temperatures, especially when nights remain unusually warm, prevents the human body from recovering from heat stress. Scientists also note that human-driven climate change has made the latest Western European heatwave between 2°C and 4°C hotter, significantly increasing the likelihood of such extreme events.
Record Temperatures Across Europe
Several European nations have reported record-breaking temperatures during the current heatwave.
France recorded temperatures as high as 43.8°C, while Spain crossed the 40°C mark in several regions, with Bilbao reaching 42.7°C. Germany registered 41.7°C in Coschen, and Hungary recorded 40.7°C near Budapest. Poland and the Czech Republic also experienced temperatures above 40°C, while Vienna in Austria reached 40°C.
The United Kingdom recorded 37.3°C in southern England, marking its hottest June day on record. The Netherlands, Denmark, and Switzerland also set new June temperature records, prompting widespread heat alerts and emergency measures.
Why European Cities Are More Vulnerable
Unlike countries that regularly experience extreme summer heat, much of Europe’s infrastructure was designed for colder weather. Homes, schools, hospitals, and public transport systems were built to retain warmth rather than release it.
Air conditioning remains uncommon in many European households, making indoor temperatures difficult to manage during prolonged heatwaves. Experts also point to densely built urban areas, limited green spaces, and the urban heat island effect, where concrete and asphalt absorb and retain heat, keeping cities significantly warmer even after sunset.
This combination of ageing infrastructure and rising temperatures has left many cities struggling to adapt.
Heat Poses Serious Health Risks
Medical experts say extreme heat rarely causes death through heatstroke alone. Instead, it worsens existing medical conditions by increasing dehydration and placing additional strain on the heart, lungs, kidneys, and circulatory system.
Older adults are considered the most vulnerable because ageing reduces the body’s ability to regulate temperature. Young children, pregnant women, outdoor workers, and people with heart disease, diabetes, kidney disorders, or respiratory illnesses also face greater health risks. Certain medications, including diuretics and some heart treatments, can further reduce the body’s ability to cope with high temperatures.
Doctors warn that many heat-related deaths occur before patients even reach medical facilities, making early prevention and community support essential.
Governments Strengthen Emergency Measures
Authorities across Europe have activated emergency response plans to reduce the impact of the heatwave.
France issued its highest-level heat alerts in dozens of regions, closed hundreds of schools, and opened cooling centres. Spain expanded public cooling shelters and restricted outdoor work during the hottest hours of the day.
Germany introduced speed restrictions on rail services after high temperatures affected railway tracks, while Hungary opened more than 2,000 cooling centres nationwide. The United Kingdom activated heat-health alerts, and the Netherlands issued its first-ever Red Alert for extreme heat across multiple provinces. Austria, Poland, the Czech Republic, and Switzerland also issued nationwide heat warnings and advised residents to avoid outdoor activities during peak afternoon hours.
A Growing Climate Challenge
Experts say Europe’s latest heatwave highlights the urgent need for climate adaptation alongside emergency response. As extreme temperatures become more frequent, governments may need to redesign cities, expand green spaces, improve cooling infrastructure, and strengthen public health systems to better protect vulnerable populations from future heatwaves.