### UK Braces for Third Heatwave With Temperatures Predicted to Exceed 30°C

Britons are being urged to prepare for the return of sweltering weather, as the Met Office foresees a third heatwave poised to sweep much of the country by the end of the coming week. With forecasters predicting highs edging into the low 30s Celsius, millions are expected to seek shade, don sunscreen, and reach for cooling fans to cope with the intense conditions.
After a spell of cooler air, widespread cloud and rainy periods across England and Wales, the anticipated heatwave would mark a swift change in the nation’s weather. This follows a particularly unsettled weekend, which also saw a yellow alert for thunderstorms affecting parts of eastern England.

Under the Met Office’s definition, a heatwave occurs when temperatures meet or surpass a set threshold—typically between 25°C and 28°C—for at least three consecutive days. According to senior meteorologist Marco Petagna, those thresholds may first be breached on Wednesday. However, the period can only be officially recognised as a heatwave if the elevated temperatures are maintained for three successive days, which would take us further into the week.
“Wednesday is shaping up as the first day we might hit those benchmark temperatures, depending on the region,” Petagna explained. “But in order to call it a technical heatwave, we’ll need to see those temperatures persist into Friday.” He further stated that temperatures are expected to climb further approaching the weekend. Friday and Saturday could see daytime highs pushing up to and possibly just over 30°C, particularly in southern areas, with a pronounced warmth remaining even after sunset.
With the nights forecast to remain warm, many residents may find it increasingly uncomfortable to sleep. Moreover, the Met Office warns that, along with the soaring temperatures, very high pollen and UV levels are expected. This raises concerns for those sensitive to such conditions, and for the importance of adequate sun protection.

Despite the heat, the UK is not anticipated to experience the same extreme conditions recently witnessed in parts of southern Europe, where thermometers have soared into the mid-40s Celsius, particularly in Spain and Portugal. “Fortunately, we seem to have avoided those record-breaking highs,” remarked Petagna. Nevertheless, forecasters highlight some uncertainty beyond the weekend, as computer models diverge over how quickly the hot spell might break and what the highest temperatures may ultimately be.
Current Met Office projections show that large swathes of Wales will see marks above the heatwave threshold from later this week. At 4pm on Thursday, predictions indicate up to 28°C in Monmouth and widespread mid-20s elsewhere—temperatures likely to please those headed outdoors or attending events such as the Stereophonics gig in Cardiff. However, the UV exposure and uncomfortable humidity at night may prove less welcome to others.
The question of just how long the heat will persist remains unclear. Some forecast models anticipate a rapid return to milder conditions, while others suggest the hot weather could endure into the following week, particularly across southern regions.
As the summer weather takes hold, the Met Office and health authorities continue to urge the public to take precautions in the heat. Staying hydrated, seeking shade during the peak midday sun, and monitoring vulnerable individuals are all recommended measures over the period of unusually hot weather.
This developing heatwave serves as a stark reminder of the need for adaptability amid increasing climate fluctuations. The prolonged spell of warmth also brings challenges for those managing allergies or effected by heat-sensitive health conditions, while also raising questions about the country’s preparedness for the impacts of climate change.
With forecasts still evolving, the final duration and severity of this latest hot spell remain to be seen. For now, UK residents can look forward to a surge in summer weather, tempered by the need to stay safe during the hottest days of the year so far.