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Full Breakdown

Record-Breaking May Heatwave Sweeps the UK

5/26/2026, 10:53:02 AM

Core Event: Record May Heat

On 25 May 2026, Kew Gardens hit 34.8 °C, beating the 32.8 °C May record (1922/1944). Heathrow (34.4 °C) and Northolt (34.2 °C) also topped 33 °C; Wales’ Hawarden Airport reached 32.2 °C. Forecasts for 26 May expected near-35 °C peaks.

Background

A high-pressure ridge trapped warm air over the British Isles. The Met Office says the record is now three times more likely than in a pre-industrial climate, and seven of twelve monthly records have been set since 2003.

Key Actors

Key actors include the Met Office (Dan Suri, Becky Mitchell, Greg Dewhurst), UKHSA, South East Water, Age UK, the AA, and climate researchers Dr Chloe Brimicombe and Prof Hannah Cloke.

The Independent

Data

Temperatures >=34 °C at Kew Gardens, Heathrow, Northolt; >=33 °C at Benson, Wisley, Reading. Warmest night: Kenley 19.4 °C. Twelve sites hit >=30 °C, eight regions entered heat-wave status. About 500 homes in Sussex/Kent lost water supply.

The Independent

Impact

UKHSA issued amber alerts for most of England and yellow alerts elsewhere, citing risks to older adults, pregnant people and those with health conditions. AA warned vehicle interiors could hit 60 °C; Age UK advised staying indoors 11 am–3 pm and taking cool showers. Water shortages prompted South East Water to apologise and distribute bottled water; a donkey derby was cancelled, though thousands still attended the cheese-rolling race.

Official Responses

The Met Office called the heat “exceptional in the UK even in mid-summer, let alone in May” and warned of further rises before high pressure eases. UKHSA’s amber alert highlighted potential strain on health and social-care services. South East Water pledged rapid repairs; AA issued vehicle-safety guidance; Age UK released specific heat-risk advice.

Criticism

Climate researchers say adaptation is insufficient. Dr Brimicombe called the event a “reminder of how climate change is impacting our lives,” and the Climate Change Committee urged faster rollout of air-conditioning in care homes and schools.

Local Reports

Residents reported intermittent water supply; a grass fire ignited in Edinburgh’s Holyrood Park; the AA warned of extreme interior temperatures.

Conflicts

Some outlets listed the highest provisional reading as 33.5 °C at Heathrow, others as 34.8 °C at Kew Gardens. Night-time records vary between 19.4 °C and the previous 18.9 °C low. Heat-wave criteria counts range from eight to twelve.

Quotes

“This heat would be exceptional in the UK even in mid-summer, let alone in May.” — Met Office spokesperson

“The record-breaking heat is a reminder of how climate change is impacting our lives in the UK. It highlights the urgency of recent calls for heat adaptation.” — Dr Chloe Brimicombe, University of Oxford

“This is what climate change feels like.” — Hannah Cloke, Regius Professor of Meteorology, University of Reading

“Drivers should never leave children, vulnerable passengers or pets inside a parked vehicle, even for a short time.” — AA safety advisory