The United Kingdom is on course to experience what could be its hottest May day on record, as a significant heatwave continues to grip parts of the nation. Forecasters are predicting temperatures could soar to an unprecedented 34 degrees Celsius in some areas, potentially surpassing the current May record of 32.8C, set in 1944 and 1922.
This prolonged period of high temperatures has already seen eight regions across England officially enter heatwave conditions as of Sunday. These regions include areas stretching from the South East to parts of Yorkshire and the Humber. The Met Office defines a heatwave as a period of at least three consecutive days where daily maximum temperatures meet or exceed a specific threshold, which varies by county.
The elevated temperatures are a result of hot air moving northwards from southern Europe, combined with high pressure systems settling over the UK. While much of England is experiencing the most intense heat, Wales and Northern Ireland are also seeing warmer than average conditions, with temperatures expected to reach the mid-20s Celsius. Scotland, particularly the central belt and southern regions, is also forecast to enjoy pleasant sunshine and temperatures in the low to mid-20s, though not reaching the same extreme levels as southern England.
In response to the escalating temperatures, Public Health England (PHE) has issued a Level 2 heat-health alert for a significant portion of England. This alert urges caution, particularly for vulnerable groups such as the elderly, young children, and those with underlying health conditions, advising them to stay cool and hydrated. Practical advice includes drinking plenty of fluids, avoiding strenuous activity during the hottest parts of the day (11 am to 3 pm), wearing light, loose-fitting clothing, and seeking shade.
The Met Office has indicated that while the extreme heat is likely to persist for several days, there is a possibility of a shift towards cooler, more unsettled weather towards the end of the week, potentially bringing some relief. However, until then, the public is advised to remain vigilant and take necessary precautions to mitigate the risks associated with heat exposure.
Wind speeds are generally expected to remain light to moderate across the UK, typically ranging from 5-15 mph, which may offer little in the way of cooling breezes in the most affected areas.
Source: Met Office, Public Health England