London Forecast: Four Days of Rain and Thunder Before Bank Holiday Sunshine
London Forecast: Rain and Thunder Before Bank Holiday Sunshine

London is set for a wetter second half of August, with BBC Weather forecasting four days of potential rainfall between August 25 and 28, but the August Bank Holiday weekend is expected to bring sunny skies and temperatures around 23°C.

After successive heatwaves that left parks with baked brown grass and sunbathers undeterred, temperatures have dipped to the low to mid-twenties, and light rain has already appeared. BBC Weather now indicates a decent chance of rain from Tuesday, August 25 to Friday, August 28, with Friday potentially bringing thunder and lightning.

Rain and Thunder Details

BBC Weather operates on a probability scale, meaning the forecast does not guarantee rain but advises planning accordingly. From Tuesday to Thursday, only light rain and a gentle breeze are expected. Friday, August 28, will see the gentle breeze continue but with more severe thundery showers replacing the light rain.

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The forecast for the coming days shows: Wednesday, August 19 (today) – light rain and a gentle breeze, high 24°C, low 13°C; Thursday, August 20 – light rain and a gentle breeze, high 22°C, low 13°C; Friday, August 21 – light cloud and a gentle breeze, high 20°C, low 11°C; Saturday, August 22 – sunny intervals and light winds, high 21°C, low 11°C; Sunday, August 23 – sunny and light winds, high 22°C, low 12°C; Monday, August 24 – sunny intervals and a gentle breeze, high 22°C, low 14°C.

Bank Holiday Silver Lining

By the time the Bank Holiday weekend arrives, conditions are expected to clear up. Saturday, August 29 through Monday, August 31 look to be sunny, with temperatures peaking around 23°C. The weather will not be a scorcher but will be sunny and mostly clear, described as perfect barbecue weather.

The extended forecast continues: Tuesday, August 25 – light rain and a gentle breeze, high 22°C, low 15°C; Wednesday, August 26 – light rain and a gentle breeze, high 22°C, low 15°C; Thursday, August 27 – light rain and a gentle breeze, high 23°C, low 15°C; Friday, August 28 – thundery showers and a gentle breeze, high 23°C, low 14°C; Saturday, August 29 – sunny and a gentle breeze, high 23°C, low 13°C; Sunday, August 30 – sunny intervals and a gentle breeze, high 23°C, low 13°C; Monday, August 31 – sunny intervals and a gentle breeze, high 23°C, low 13°C; Tuesday, September 1 – sunny and a gentle breeze, high 23°C, low 12°C.

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