The UK is bracing itself for its hottest ever spell as the Met Office issues a first-of-its-kind red extreme heat warning, with temperatures potentially reaching a scorching 40C in some areas. This unprecedented alert covers parts of central, eastern and south-eastern England, including London, from Monday into Tuesday.
Meteorologists warn there's an 80% chance the UK's all-time temperature record will be shattered – the current high stands at 38.7C, set in Cambridge in July 2019. There's a 50% chance of temperatures hitting 40C for the first time ever, with areas under the red warning most likely to experience this extreme heat.
Evening temperatures are also expected to remain stubbornly high, potentially not dropping below the low 20s Celsius in some urban areas. The lack of respite from the heat will pose significant challenges for those trying to escape the sweltering conditions.
While the red warning zone is restricted, an amber alert remains in place for much of England and parts of Wales, indicating widespread impacts. Scotland and Northern Ireland are not under extreme heat warnings but still expect elevated temperatures – central Scotland could see highs of 25C on Monday, while Northern Ireland may reach 23C.
The extreme heat poses substantial health risks, particularly for the elderly, young children and those with underlying conditions. The UK Health Security Agency has raised its heat health alert to Level 4, indicating a national emergency. Public services are gearing up for increased demand, with rail companies advising against non-essential travel and potential speed restrictions due to buckling tracks.
The Met Office stresses that this heatwave is a direct consequence of climate change, making such extreme events more likely and intense. The public is strongly advised to take precautions: stay hydrated by drinking plenty of water, avoid strenuous activity during the hottest parts (11 am to 4 pm), seek shade, wear light clothing and check on vulnerable neighbours and relatives.
Areas like Greater London, Essex, Suffolk and parts of the East Midlands are most likely to experience the highest temperatures under the red warning. Cities like Manchester and Leeds, while under the amber warning, could still see temperatures exceeding 35C. Wales will also experience significant heat, with Cardiff potentially reaching 34C.