A red warning for hot weather remains in place over London for the next two days as the city endures a record-breaking June heatwave. The Met Office alert, which warns of a risk to life from extreme heat, is active until 9pm on Friday. Temperatures in London are expected to reach around 36C on Friday, following a high of 32C on Thursday and 35.8C recorded on Wednesday.
Overnight Heat and Records
Many Londoners faced an uncomfortable night as temperatures did not drop below 21C in most parts of the capital. The Met Office reported on Thursday that the UK record for the highest June minimum temperature has been provisionally broken, with temperatures only falling to 23.5C overnight at Bute Park, Cardiff.
Weekend Forecast and Heatwave End
Saturday is forecast to be another extremely warm day, with the Met Office predicting 31C for London. This would extend the current heatwave to a full week in the capital. However, relief is expected on Sunday, when temperatures are set to fall to 26C. This drop would mark the end of the heatwave, which in London is defined as at least three consecutive days with temperature highs no lower than 28C.
Cause of the Heatwave
The heatwave is driven by a "heat dome" settling over western Europe, bringing extreme conditions across the continent. Human-driven climate change, primarily caused by burning fossil fuels, is making heatwaves more frequent and intense. The Met Office has indicated that the June record could be beaten again. If temperatures reach 39C, it would be the second hottest day in UK history; if 38C is recorded, it would still rank among the top five hottest days and surpass any day of the 20th century.
Health Warnings and Advice
The Met Office warns that the ongoing heatwave will be accompanied by high humidity, "exacerbating the potential for discomfort and health impacts." Dr. Agostinho Sousa, head of extreme events and health protection at UKHSA, urged preparedness: "Very hot weather is forecast across large parts of England in the coming days and we are urging health and social care services across the country to ensure they are prepared. It is vitally important that people understand the risk posed by high temperatures like these, and take steps to keep themselves and their friends, families and neighbours safe." He recommended simple actions such as staying hydrated, avoiding the sun during the hottest part of the day, keeping homes cool, and checking on elderly relatives, neighbors, and those with underlying health conditions.
