The UK is bracing itself for a potentially catastrophic heatwave as forecasters predict temperatures will soar to record-breaking levels next week, with parts of England facing the "realistic possibility" of hitting 40°C for the first time in history. The Met Office has extended its Red warning – issued for the first time ever – to cover a wider area, including London and the South East, where temperatures are expected to be at their highest.
Alongside the Red warning, an Amber alert remains in place for much of England and Wales, and parts of southern Scotland and Northern Ireland, indicating a high risk of adverse health effects across the population. The widespread disruption is expected to impact transport networks, health services, and potentially critical national infrastructure, with authorities urging the public to take immediate action to protect themselves and others.
Areas under the Red warning include London, the South East, East Midlands, and parts of Yorkshire, where temperatures are most likely to hit 40°C. Other regions like the South West and North West remain under an Amber warning, with expected highs in the mid to high 30s°C. Wales will also experience significant heat, with temperatures widely reaching 30-35°C, particularly in eastern areas, under the Amber warning.
The Met Office attributes this extreme weather to a plume of hot air originating from southern Europe, combined with high pressure over the UK. This atmospheric setup is creating stable conditions conducive to significant heat build-up. The previous UK temperature record of 38.7°C, set in Cambridge in 2019, is now under serious threat. Wind speeds are expected to be light, generally 5-10 mph, offering little relief from the intense heat.
With temperatures predicted to stay high for several days, authorities are warning about the risks of heatstroke and heat exhaustion, which can be life-threatening if not addressed promptly. The NHS has issued warnings urging people to check on vulnerable friends, family, and neighbours, while staying hydrated and avoiding direct sun exposure during the hottest parts of the day.
The implications of such extreme heat extend beyond immediate health concerns. Rail operators have warned of potential speed restrictions to prevent tracks from buckling, leading to delays and cancellations. Road surfaces could also be affected, and there are concerns about increased demand on electricity and water supplies. Businesses are being advised to review working conditions for outdoor staff.