A historic spring heatwave shattered national temperature records across the United Kingdom on Tuesday, triggering six amber heat health alerts, widespread rail disruptions, and severe water shortages in several English regions.
Kew Gardens in London recorded a provisional temperature of 35.1 degrees Celsius on Tuesday, breaking the previous May record of 34.8 degrees Celsius set at the same location on Monday.
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Temperatures across many parts of the UK surged between 10 and 15 degrees Celsius above normal, prompting the UK Health Security Agency to issue amber alerts covering most of England until Thursday.
Travel Disruptions and Water Shortages
The extreme heat caused significant travel disruptions as Network Rail imposed speed restrictions to prevent tracks from buckling and overhead lines from sagging.
South Western Railway, Great Northern, Thameslink, Southern, and LNER networks reported cancellations and delays of up to 60 minutes.
Meanwhile, South East Water reported that high demand left dozens of homes in Kent with little to no water since Saturday after storage reservoirs ran low.
Tragically, emergency services recovered multiple bodies from open waters following separate drowning incidents over the weekend and early week, including a 12-year-old boy in the River Ribble and a teenager at Rother Valley Country Park.
The Met Office warned the public about the dangers of "cold shock," noting that water temperatures remain dangerously cold despite the searing air temperatures.
The Met Office also issued yellow weather warnings for thunderstorms across parts of England until early Wednesday morning, citing a small chance of flooding and power cuts from heavy rain and frequent lightning.
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Meteorologists noted that before this week, the highest May temperature recorded in the UK was 32.8 degrees Celsius, registered in 1922 and 1944.
Wales also set consecutive records, reaching a provisional 32.3 degrees Celsius at Cardiff's Bute Park on Tuesday, surpassing Monday's high of 32.2 degrees Celsius at Hawarden Airport.
Climate scientists stated that this early season heatwave aligns with long-term trends of rising global temperatures driven by human activity.
"Until yesterday, the highest temperature in May was 32.8C, but we've now exceeded that record on consecutive days by a full two degrees Celsius," the Met Office posted on X.
Officials confirmed that the extreme weather stems from high pressure building over the region, establishing official heatwave status across much of England and Wales by Tuesday.
"The influence of warmth building under an area of high pressure near the UK," said Dan Suri, the Met Office's chief operational meteorologist.
Forecasters expect cooler air to move into northern and eastern England on Wednesday, dropping temperatures by 10 degrees Celsius in some locations, though a temporary resurgence of hot air from France will push temperatures back toward 30 degrees Celsius on Thursday before a gradual weekend cooling trend.
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"Today's heat events are emerging earlier, intensifying faster and occurring across a much warmer background climate," said Prof Ed Hawkins, professor of climate science at the University of Reading, speaking to the BBC.
