May 2026 is breaking temperature records across Western Europe. A high-pressure heat dome is trapping hot air from the south, driving unusually high May temperatures in multiple countries. This page explains what’s happening, where it’s hottest, and how people can stay safe. Below you’ll find practical answers to common questions people search about this heat event.
A large high-pressure system, often called a heat dome, sits over Western Europe. It traps hot air from northern Africa and blocks cooler maritime air from moving in, pushing temperatures higher than typical for May. This pattern aligns with longer-term climate trends, where heat extremes are becoming more common.
A heat dome is a large, persistent area of high pressure that stalls over a region. The sinking air compresses and warms, while the surrounding air prevents cooler air from entering. In Western Europe, the heat dome pulls in hot air from Africa and traps it over countries like the UK, France, Spain, and Italy, raising May temperatures well above historical norms.
So far, the UK is recording May heat highs around the mid-30s Celsius, with places like Kew Gardens reaching near 34.8C. France has logged its hottest May day on record, and Spain and Italy are forecasting 36-38C in several regions. Projections for the coming days suggest continued extreme heat across Western Europe as the heat dome persists.
Risks include heat-related illnesses (dehydration, heat exhaustion), strain on power grids, and risks to outdoor workers and transport networks. Governments advise staying hydrated, limiting outdoor activity during peak sun, seeking shade, using air conditioning or fans, checking on vulnerable neighbors, and postponing non-essential travel during hottest hours. Public health agencies issue heat alerts and provide cooling centers and guidance for staying safe.
Forecasts suggest the heat dome could persist for several days in parts of Western Europe, with temperatures remaining well above average for May. While weather patterns vary, many scientists see these events as part of broader climate-change-driven trends toward more frequent and intense temperature extremes, underscoring the need for long-term adaptation in infrastructure and health planning.
Trust official sources like national meteorological services (e.g., Met Office, Météo-France), government health advisories, and reputable news outlets for daily heat advisories and safety tips. They provide current temperatures, heat alerts, and guidance on cooling centers, hydration, and staying safe during extreme heat.
Climate change is causing earlier and more intense heatwaves, France’s weather agency said.