Parts of Wales are set to see highs of 31C on Bank Holiday Monday
Temperatures across Wales soared on Sunday (May 24) as the UK basked in conditions more commonly associated with the Mediterranean. However, forecasters warn it’s going to get even hotter on Bank Holiday Monday.
Cardiff and Llysdinam recorded the highest temperatures in Wales at 27.5C on Sunday, while Usk closely followed on 27.0C as the country enjoyed one of the hottest May weekends in recent memory. Even the coolest parts of Wales remained exceptionally warm for late May, with Aberdaron reaching 19.2C, Valley 18.8C and Aberporth 17.8C overnight.
Forecasters say the heat is still building, with temperatures expected to peak on Monday when parts of south and mid Wales could hit 31C.
Cardiff, Newport, Abergavenny and Hay-on-Wye are all forecast to experience the highest temperatures in the country outside of southern England, while much of the rest of Wales is expected to remain in the mid to high twenties. Coastal areas including Pembroke and St Davids are likely to be slightly cooler at around 26C thanks to sea breezes.
The Met Office has described the conditions as “historic”, warning that temperatures will near 35C in England which is exceptionally rare for May in the UK. For the biggest stories in Wales first sign up to our daily newsletter here
A Met Office spokesperson said: “We rarely see temperatures above 35C, even in the summer months, so to see temperatures getting close to 35 in May is pretty historic.”
Saturday had already marked the hottest day of the year so far after temperatures reached 30.5C in Kent – the first time the UK has passed 30C this year and the first occurrence of such heat in May since 2012.
The Met Office confirmed heatwave conditions have officially been met in eight parts of England, including Heathrow in Greater London, Benson in Oxfordshire, Brooms Barn in Suffolk, High Beech in Essex, Kew Gardens in London, Northolt in London, Santon Downham in Suffolk and Writtle in Essex.
Santon Downham became the first location to meet the official heatwave threshold at around 11.30am on Sunday after recording temperatures above 27C for three consecutive days. Heathrow followed shortly afterwards at around 11.50am after exceeding its 28C threshold for a third consecutive day.
Forecasters also warned overnight temperatures may stay above 20C in some areas, creating uncomfortable sleeping conditions and potentially setting further records.
The Met Office said: “For many areas, this will feel more like mid-summer than late May, with temperatures rising well above average and the potential for some notably high values as the weekend progresses.
“The bank holiday Monday is expected to bring the peak of the heat. Temperatures may reach around 33C across parts of southern and central England, with the potential to challenge or exceed existing late-May records.”
An amber heat-health alert has also been issued for the East of England amid concerns over pressure on health and social care services. Officials warned indoor temperatures, including in hospitals, may rise above recommended safety thresholds.
Many made the most of the good weather today, as thousands of people across Wales headed to beaches, parks and beauty spots to enjoy the sunshine, prompting South Wales Police to issue safety advice to parents. This came after a noticeable increase in reports involving missing children. Officers confirmed all children involved were later safely reunited with their families.
Police are urging parents to take precautions in busy public places by taking an up-to-date photo of their children before leaving home, placing contact details in their pockets or writing a phone number on their arm, and establishing a clear meeting point upon arrival.
Officers are also encouraging parents to teach children to “stop and wait” if they become separated rather than continuing to wander, while reminding them to seek help only from uniformed staff, police officers or families with children nearby.
South Wales Police further urged the public to contact officers immediately if a child goes missing, especially in crowded locations such as beaches and parks where officers and PCSOs are often nearby.


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