Met Office confirms third UK heatwave with temperatures expected to reach 35C
The United Kingdom is entering its third official heatwave of the year, with some regions expected to see highs of up to 35C. Yellow heat-health alerts have been issued across parts of the country as a prolonged period of hot weather begins.
Amalgamated from The Mirror (opens in new tab), The Mirror (opens in new tab), The Mirror (opens in new tab), The Independent (opens in new tab)
The Met Office has officially declared that the United Kingdom is entering its third heatwave since the beginning of 2026. Forecasts indicate that temperatures in some areas could climb to between 34C and 35C during the current week.
According to reporting from The Mirror, this latest period of hot weather will differ from previous occurrences in several ways, including a projected increase in duration. To manage the risks associated with these conditions, yellow heat-health alerts have been issued for various parts of the country.
The Independent reports that while some aspects of the current weather system may result in lower peaks than earlier events, the persistence of the high temperatures is expected to be more prolonged. The Met Office's declaration serves as a formal notice for residents and local authorities to prepare for sustained heat over the coming days.
Why this matters
The repeated occurrence of heatwaves within a short timeframe can strain public infrastructure and put significant pressure on healthcare services, particularly for vulnerable populations during periods of prolonged high temperatures.
What's confirmed / what isn't
Multiple sources confirm the official declaration of the third heatwave and the expected peak temperatures of 34C to 35C. The specific details regarding how this heatwave differs from previous ones are based on reports from both The Mirror and The Independent.
Background
In the United Kingdom, a heatwave is typically defined as a period of at least three days of unusually high temperatures. Yellow alerts are issued by the Met Office to warn the public of risks associated with extreme weather.