The United Kingdom is experiencing its third official heatwave of 2026, with temperatures soaring above 30°C in parts of the country, as Western Europe continues to count the cost of what scientists have confirmed was the hottest June on record.
Record-breaking June temperatures
According to the European Union's Copernicus Climate Change Service, June 2026 was the warmest June ever recorded globally, with temperatures 0.5°C above the previous record set in 2023. Western Europe was particularly affected, with countries including France, Germany, and Spain reporting average temperatures 2-3°C above the long-term norm. The UK experienced its hottest June day on record on June 28, when temperatures hit 38.7°C in Cambridge, according to the Met Office.
UK heatwave conditions
The Met Office confirmed that the UK is now in its third heatwave of the year, defined as three consecutive days with maximum temperatures exceeding a specific threshold that varies by region. In London, the threshold is 28°C, while in northern England it is 25°C. The current heatwave is expected to last until at least July 12, with temperatures in London forecast to reach 35°C on July 10. Dr. Emily Wallace, a climate scientist at the Met Office, said: "The frequency and intensity of heatwaves in the UK are increasing due to climate change. We are seeing more frequent and prolonged periods of extreme heat, which pose significant health risks, particularly for vulnerable populations."
Health and economic impacts
The prolonged heat has led to a surge in heat-related illnesses, with the UK's National Health Service reporting a 40% increase in emergency department visits for heatstroke and dehydration compared to the same period last year. In France, the health ministry reported 1,200 excess deaths during the June heatwave, with the elderly and those with pre-existing conditions most affected. The economic cost is also mounting, with crop failures reported across southern Europe. In Italy, wheat yields are expected to drop by 15% this year, while in Spain, olive oil production is forecast to fall by 20%, driving up prices globally. The UK's agriculture sector has also been hit, with farmers reporting lower yields of soft fruits and vegetables.
Climate change link
Scientists are unequivocal that climate change is driving these extreme weather events. Dr. Friederike Otto, a climate scientist at Imperial College London, said: "The record-breaking heat we are seeing in Europe is a clear signal of climate change. Without rapid reductions in greenhouse gas emissions, these events will become more frequent and more severe." The World Weather Attribution network found that the June heatwave in Europe was made at least 10 times more likely due to human-induced climate change.
Government responses
Governments across Western Europe are scrambling to respond. The UK government activated its emergency heatwave plan, opening cooling centers and issuing public health warnings. In France, President Emmanuel Macron announced a €2 billion package to help farmers adapt to extreme heat, including subsidies for irrigation systems and drought-resistant crops. In Germany, the government is considering new building regulations to require air conditioning in new homes and offices. The European Commission is also under pressure to accelerate its climate action plans, with environmental groups calling for a 65% reduction in emissions by 2030, up from the current target of 55%.
Looking ahead
The heatwave is expected to persist in the UK for at least another week, with the Met Office issuing an amber warning for extreme heat in parts of southern and eastern England. The longer-term outlook is also concerning, with climate models suggesting that summers like 2026 could become the norm by 2050 if emissions continue at current levels. As the UK and Europe swelter, the focus is now on both immediate relief and long-term adaptation to a warming world.
