Overview of the latest heat episode
Amber heat-health alerts were extended further north on Thursday as a third heatwave of the year brought temperatures of 35.5C in Surrey. The alerts now cover almost all of England and remain in force until 21:00 BST on Sunday, signalling that the heat is likely to have a substantial impact on health services and could cause travel disruption. Forecasters say the present spell may persist beyond the weekend, possibly lasting into next week.
Record for 34C days broken
Thursday’s 35.5C reading represented the eighth day this year on which temperatures reached or exceeded 34C, eclipsing the seven days recorded in 1976 and 2020. Meteorologists expect at least one further reading at or above 34C as the heatwave peaks. The tally includes two such days in May, four in June and two so far in July.
Impact on health services and vulnerable people
Health authorities have warned the heat is placing sustained pressure on ambulance services. Amber alerts indicate a potential for high demand on health and social care, with the most vulnerable groups at greatest risk, including older people, babies and young children, pregnant people and those with long-term health conditions. Public-health advice emphasises regular hydration, keeping out of direct sun during the hottest hours, and ensuring people who live alone or have reduced mobility are checked on.
Transport and infrastructure disruption
Rush-hour commuters experienced delays, cancellations and speed restrictions on several rail routes as high track temperatures forced operators to impose slow orders. A small number of services have been suspended where heat-related problems have been most acute. Transport operators are advising passengers to check before travelling, carry water and expect altered timetables at peak times.
Temperatures across the UK
England saw the most severe heat, but high temperatures were recorded elsewhere. Cardiff recorded a high of 31.3C in Wales, Scotland reached 29.3C at Charterhall, and Northern Ireland saw 27.5C at Killowen. South-eastern England has been hardest hit and parts of the region were formally declared in heatwave conditions earlier in the week after recording five consecutive days at or above 30C.
Events and sport adapting to conditions
Organisers of outdoor events have introduced extra measures to protect athletes, staff and spectators. Tennis officials added water and electrolyte provision for players, iced towels and umbrellas during changeovers, and a provision exists to request a 10-minute break between sets if temperature and humidity pass a predetermined threshold. Such adjustments are part of a wider effort to reduce heat exposure during extended spells of high temperature.
Practical advice for staying safe in the heat
Individuals can reduce their risk by following simple measures: keep hydrated with water rather than sugary or alcoholic drinks, avoid strenuous activity in the hottest parts of the day, seek cool or shaded places, and wear loose, light-coloured clothing and sunscreen. For those caring for vulnerable people, ensure rooms are ventilated or cooled where possible, check medications and follow any clinical guidance, and arrange regular welfare checks for people living alone.
What to expect next
Meteorological services indicate the current heat may extend beyond the weekend, with the peak expected around Friday. Residents and services should prepare for continued high temperatures and the potential for further disruption. Local authorities and emergency services are coordinating contingency plans, while health bodies continue to monitor demand on ambulance and hospital services.
