UK braces for record May heat with amber health alerts as temperatures forecast to reach 33C
The UK Health Security Agency (UKHSA) has issued amber heat health alerts for the bank holiday weekend. The alerts cover the East Midlands, West Midlands, the east of England, London and the south-east, and run from 2pm Friday until 5pm Wednesday. UKHSA notes that amber level indicates 'possible risk to life as well as potential damage to properties, significant travel delays and power cuts'.
Met Office forecasts suggest that on Monday temperatures could reach 33C (91F) in southern England or the Midlands. That would surpass the 1995 record of 32.8C and the 2012 record of 32.4C and would set a new UK May record. Met Office meteorologist Becky Mitchell told the BBC: 'A high-pressure system is drawing in a warm air mass from northern Africa; the build-up of the urban heat island and limited overnight cooling raise the health risk in urban areas.'
The alert has prompted NHS hospital A&E departments to activate their summer surge plans. The Royal College of Nursing's Patricia Marquis said: 'We are deferring scheduled leave for additional doctors and nurses across primary care.' Hospitals are also expanding observation-bed capacity, particularly for elderly patients and those with chronic cardiovascular and respiratory conditions.
Cardiology specialist Dr Anna Whittle, based in Carmarthen, told the Guardian: 'For our most vulnerable groups — those over 75, children and infants, and pregnant women — heat stroke and dehydration prevention is critical.' UKHSA's public advice includes avoiding outdoor exposure between 11am and 3pm, ensuring indoor water intake of 1.5-2.5 litres per day by age, reducing caffeine and alcohol consumption, and wearing light, breathable clothing.
The bank-holiday timing compounds load on transport and health infrastructure. National Highways said it expected 4.7 million vehicles on the roads — 12 percent more than in the 2024 bank holiday. Post-Brexit additional passport checks have generated 90-minute waits at Dover and the Folkestone-Eurotunnel terminals. Travellers are advised to carry in-vehicle water stocks, plan shaded parking and schedule breaks.
Public awareness of heat-stroke symptoms is critical for public health. When the body's temperature regulation mechanisms are overcome, signs include dizziness, nausea, the cessation of sweating and confusion — a medical emergency. UKHSA's most recent data show that during the June 2024 heatwave there were an estimated 2,295 excess deaths in the UK, below the 2022 figure of 3,470 but above the previous decade's average.
Heatwaves are now among the most visible effects of climate change on the UK. Met Office climate scientist Professor Stephen Belcher said: 'Compared with the previous decade, the frequency of days in the UK reaching above 30C has increased fourfold. Reaching that level in May is particularly notable — older records show this was much rarer.'
The care home sector is applying its updated heat protocols. Care England's Martin Green said: 'We have planned staff rotations to move residents in unconditioned rooms into cooler spaces during the day. We are also recording hourly water intake for each resident.' NHS data from 2024 showed an estimated 14 percent excess death rate in care homes during the heatwave; the sector is targeting a lower figure this year.
Scotland, Northern Ireland and Wales face milder forecasts. Scotland expects 23-25C, western Wales 27-29C, with Atlantic winds expected to bring cooler air to the north and west. For that reason UKHSA issued the health alert only for southern and central English regions.
The heatwave is expected to peak Monday night or Tuesday day, with an Atlantic-origin wind system on Wednesday bringing temperatures back to 22-24C. The Met Office forecasts a chance of rain Friday morning and localised thunderstorms. UKHSA recommends the public follow current alert levels on gov.uk/heat-health-alerts and that those in vulnerable groups stay in contact with neighbours or relatives.
*This article is not medical advice. Discuss individual heat risk assessment with your GP.*