Meteorological forecasts indicate that temperatures across the United Kingdom could climb back up to 35 degrees Celsius or higher next week as a new heatwave builds across southern regions.
According to an ITV News report on June 29, 2026, the upcoming weather system follows an intense nationwide heatwave that recently saw temperatures peak at 37.7 degrees Celsius in Lingwood, Norfolk.
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Many other areas reached between 35 and 38 degrees Celsius during that event.
A temporary return to lower, typical summer temperatures is expected early this week, dropping conditions by a good 10 degrees Celsius compared to the previous week's extreme highs.
The transition to cooler air has been slower in parts of the southeast, but a shift toward winds coming from the west and the Atlantic Ocean is bringing fresher, more comfortable conditions of 20 to 25 degrees Celsius.
Weather patterns will shift on Tuesday as more showers with longer bursts of rain move into the north and west, bringing a chance of thunder that may eventually progress across southern and eastern regions.
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Later in the week, high pressure will re-establish itself from the south, forcing temperatures to rise again with highs of 25 to 28 degrees Celsius across parts of England and Wales, while Scotland and Northern Ireland stay fresher.
Heatwave Peak Expected Next Week
By next weekend, parts of southeastern England will approach heatwave criteria as dry, sunny conditions develop under high pressure building across the southwest and southern Britain.
Predictive models show temperatures reaching near 30 degrees Celsius on Saturday and rising further to highs of 30 to 32 degrees Celsius on Sunday, which will also lift humidity levels across the region.
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The heatwave conditions are expected to peak across the south and southeast from the beginning to the middle of next week, bringing much hotter weather and warm, stuffy nights to many residents.
