A severe heatwave is gripping western Europe, prompting red heat alerts across France, Spain, Italy, Switzerland, Luxembourg, and the United Kingdom. Temperatures have soared above 40°C in many regions, with record-breaking highs expected to persist through the week.
France Swelters Under Historic Heat
France is among the worst-affected countries. On Monday, the national average temperature reached 29.2°C, making it the third-hottest day ever recorded in the country, according to Météo-France. Approximately 20% of French territory surpassed the 40°C threshold. The heat is forecast to continue at least until Thursday.
In Paris, authorities have kept parks and gardens open around the clock to provide residents with cooler spaces. Swimming has been permitted in the Canal Saint-Martin since Wednesday, drawing crowds seeking relief. For more on local responses, see our report on Parisians flocking to the canal.
Spain Braces for Peak Heat
Spain’s meteorological agency, AEMET, has issued a heatwave alert from Sunday through Wednesday. The combination of warm Saharan air and intense June sunshine could push temperatures to 44°C in parts of the country. The heat has already led to cancellations of traditional San Juan bonfires, as detailed in our story on Spain bracing for its hottest day.
UK Issues Rare Red Alert
The UK’s Met Office has raised a red alert for extreme heat covering large parts of southern and central England and Wales on Wednesday and Thursday. Temperatures could reach 38 to 40°C, accompanied by high humidity. The Met Office warns of adverse health effects, a heightened risk of power and water service disruptions, and increased dangers at coastal areas, lakes, and rivers. One hospital has already declared a critical incident due to the strain on services, as reported in our coverage of the UK hospital crisis.
Italy and Switzerland on High Alert
Italy’s Ministry of Health has issued level three heatwave bulletins for several cities, including Bologna, Florence, Milan, Rome, Turin, Venice, and Verona for Tuesday and Wednesday. Tourist destinations such as Bari, Naples, and Palermo are under level two alerts. In Switzerland, MeteoSwiss has activated level four heatwave alerts for the northwest, the Lake Geneva region, and central Valais, with temperatures between 34 and 37°C expected on the southern side of the Alps. These alerts remain in place until Saturday.
Luxembourg and Broader Impacts
Luxembourg’s Weather and Flood Risk Assessment Unit (CERI) has issued a red alert until the end of the week, with average temperatures of 35 to 40°C and a peak expected on Wednesday. The heatwave coincides with the country’s National Day on 23 June. Across the continent, the extreme heat is accelerating glacier melt in the Alps, as seen in our report on the Bossons Glacier in the French Alps. Tragically, the heat has also been linked to fatalities, including the deaths of two young children in a car in southern France and three elderly people in the Bordeaux suburbs.
Travel disruptions are mounting, with Eurostar cutting services between Paris and London due to the heat. Authorities across the affected countries urge residents and visitors to stay hydrated, avoid strenuous activity during peak hours, and check on vulnerable individuals. The heatwave underscores the growing frequency of extreme weather events in Europe, driven by climate change, and the need for robust adaptation measures.
