Met Office

Met Office predicts end to UK heatwave as rain and thunderstorms arrive; temperatures slide from 26C to 21C in south-east

The UK is set to experience a significant drop in temperatures, sliding from 26C to 21C in the south-east, as rain and thunderstorms arrive after months of heatwaves. Many areas, particularly in northern England and Wales, are forecasted to receive much-needed rainfall this week.

ITVX17 August 2026 · 14:40 UTC
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The UK is experiencing a notable shift in weather patterns as the Met Office predicts an end to the recent heatwave, with temperatures in the south-east expected to drop from 26C to 21C this week.

After four months of extreme heat, including two heatwaves with highs of 38C, the arrival of rain and thunderstorms is a welcome change.5

Many regions, particularly in northern England and Wales, are forecasted to receive significant rainfall, providing relief to areas suffering from drought conditions.23489

More than half of England has declared drought, with some southern areas not recording any rain since mid-June. The anticipated rain, however, may struggle to penetrate the hardened ground, leading to surface water issues.

The shift in air mass, moving to a northerly direction, will bring cooler temperatures across the country, with Scotland and Northern Ireland seeing highs of 16-19C by the weekend.

While high pressure is expected to return by the end of next weekend, it will bring a “cooler high”, resulting in drier conditions but with lower temperatures overall.7

This week marks a turning point for the UK’s weather, as the nation transitions from prolonged heat to a more temperate climate.

Key Insight
“More than half of England has declared drought, with parts of the south-east seeing no rain since mid-June. Heavy thundery downpours may struggle to infiltrate baked ground, creating surface water but remaining needed.”
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ITVX
“After four consecutive months of temperatures reaching 35C or higher, including two separate heatwaves that saw highs of 38C, this week marks a turning point.”
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