In June 2026, a suffocating heatwave has gripped Europe, breaking temperature records in nearly half of the continent's cities and causing hundreds of deaths. The UK, despite its reputation for mild summers, has been placed under an extended amber weather warning as temperatures soared to a new June record of 37.1°C in Cavendish, Suffolk. The extreme heat has disrupted travel, overwhelmed ambulance services, and raised urgent questions about how well prepared we are for a warming world.
The current heatwave is driven by a persistent high-pressure system that has pushed temperatures 5 to 12°C above seasonal averages across Europe. According to the scientists from the World Weather Attribution, this event would have been virtually impossible just five decades ago and is now 200 times more likely than it was 20 years ago due to climate change. The heat has been particularly severe in France, Germany, Italy, Spain, and southern England. In Spain alone, 327 fatalities are thought to be linked to the extreme heat, while at least 55 people have died in France. The European heatwave has also led to record-breaking temperatures in 45% of the 854 European cities examined by the World Weather Attribution.
“Explains the causes, impacts, and future of Europe's deadly heatwave.”
Why are these heatwaves becoming more frequent and intense? The answer lies in climate change. The World Weather Attribution's rapid study released on Friday found that the extreme temperatures in France, Germany, Italy, Spain, and southern England would not have occurred without the warming caused by greenhouse gas emissions. The heatwave is also pushing cooling demand to its highest level in at least 45 years and significantly increasing wildfire risk, particularly in Spain and France.
For UK readers, the heatwave has immediate and practical consequences. The Met Office has issued an amber extreme heat warning covering London, the South East, the East of England, and the East Midlands, which was extended until 9am on Sunday. Even overnight, temperatures are expected to remain in the high teens Celsius, with some places not dropping below 20°C, creating what is known as a 'tropical night'. This prolonged heat poses health risks, particularly for the elderly and those with pre-existing conditions. The UK's largest ambulance service received a record 8,869 emergency calls on Friday, the peak of the heatwave. Travel has been severely disrupted: 367 flights at Heathrow and 352 at Gatwick were delayed on Saturday, and train operators have reduced schedules as the rail infrastructure struggles with the heat. Thunderstorms sparked by the heat have caused damage, including a lightning strike that destroyed a roof in Streatham, South London, and a home damaged in Crawley, West Sussex.
Q: How dangerous is the heatwave for people in the UK? The amber warning means there is a risk of heat exhaustion and possible power cuts. The prolonged high temperatures, especially at night, make it harder for bodies to cool down, increasing the risk of heat-related illness. The record number of emergency calls highlights the strain on health services.
Q: Will the heatwave affect my travel plans? Yes. Major airports like Heathrow and Gatwick have seen hundreds of delays, and train operators are running reduced timetables because tracks can buckle in extreme heat. Check with your carrier before travelling and expect disruption.
Q: Is this heatwave caused by climate change? According to the World Weather Attribution, the record-breaking heat would not have been possible without climate change. It is now 200 times more likely than it was 20 years ago, and the high-pressure system driving it is being intensified by global warming.
What happens next? The amber warning is set to lift by Sunday morning as slightly cooler, fresher air moves in from the west. However, temperatures in the far east of England may remain high on Sunday. Longer term, the frequency and intensity of such heatwaves are expected to increase as climate change continues, raising the need for better adaptation measures, including more green spaces, improved building insulation, and more resilient transport infrastructure. The debate over how seriously to treat these events is also ongoing: the US Energy Secretary Chris Wright downplayed the heatwave, stating 'more people die in the winter,' a comment that contrasts sharply with the EU's warnings of life-threatening dangers.