London weather forecast: Heavy rain and cooler temperatures expected Tuesday, August 27

London residents are bracing for a wet start to the week as heavy rain is forecast for today, August 27, 2026. Temperatures will also see a noticeable drop, with a high of 26°C and a low of 16°C, making it a day best suited for indoor activities.Today, August 27, 2026, London will experience heavy rain. The average temperature is expected to be around 21.0°C, with a maximum of 26°C and a minimum of 16°C. Wind speeds could reach up to 35.41 kph. The daily chance of rain is a significant 50%, and the humidity will be high at 93%."Umbrellas and Waterproof Footwear Advised"With heavy rain expected throughout the day, Londoners are advised to carry umbrellas and wear waterproof footwear. Commuters should anticipate potential delays due to the wet conditions on roads and public transport. It would be prudent to postpone any outdoor plans that are not essential, or to ensure adequate protection from the elements if venturing out. Staying indoors or engaging in indoor leisure activities is highly recommended for the day.Looking ahead, the weather in London is set to improve gradually after today's downpour. Tomorrow, August 28, will see a shift to sunny intervals with a high of 24°C and a low of 17°C. This pattern of sunny intervals is expected to continue through August 30, with temperatures hovering around the low 20s Celsius. Light rain is forecast for August 29, but it is not expected to be as severe as today's conditions. By September 2, the skies are predicted to become cloudy, with temperatures reaching up to 24°C. Overall, the week promises a transition from a wet start to more mixed but generally pleasant conditions.Catch the latest World News and Live updates. Download the TOI app.