The UK is on high alert for its hottest June day ever recorded, with temperatures potentially soaring above 35C on Tuesday and surpassing the existing record of 35.6C set in 1976. Forecasters warn that severe heat will grip much of the country, putting a strain on healthcare services and infrastructure.
The Met Office has issued a rare red warning for extreme heat from 9am on Wednesday until 9pm on Thursday, covering parts of the Midlands, south-east Wales, and southern England. This critical alert highlights a significant risk to health and potential widespread disruption. Amber warnings for high temperatures are also in effect across England and Wales, where temperatures are expected to climb into the mid to high 30s.
Tuesday's heatwave will affect all UK regions, with northern England and Wales reaching 28-30C, while central, eastern, and southern England will widely exceed 33C. Specific locations around the South Midlands and Greater London could experience peaks of 36-37C. Scotland and Northern Ireland will also feel the heat, with sunny conditions pushing temperatures to 24-27C.
The heatwave is set to intensify through the week, with temperatures potentially reaching 40C in parts of England on Wednesday or Thursday, bringing the UK perilously close to its all-time temperature record. The accompanying high humidity will make conditions feel particularly uncomfortable, increasing the risk of heat stress and heatstroke, especially for vulnerable populations.
Overnight temperatures are also expected to remain exceptionally high, unlikely to fall below 17-22C, which could challenge existing overnight records. This sustained high is a stark reminder of the severity of the current weather event and the importance of adhering to safety advice.
The UKHSA's red heat health alerts mirror the Met Office warnings, indicating severe impacts are anticipated across healthcare services, with an increased risk to life across the entire population. Amber heat health alerts are also in place across Northern England for the same period.