London weather forecast: Sunny intervals with 70% chance of rain on August 26

London residents can expect a day of mixed weather on Tuesday, August 26, 2026, with sunny intervals and a significant chance of rain. Temperatures will be moderate, with a high of 26°C and a low of 19°C, accompanied by high humidity around 91%. This damp and humid forecast extends into the following days, with heavy rain predicted for Wednesday and light showers expected through Friday, before a return to more settled, sunny conditions over the weekend.Today's ForecastToday, August 26, 2026, London will experience sunny intervals, but a substantial 70% chance of rain means an umbrella is a must-have accessory. The maximum temperature is forecast to reach 26°C, with a cooler low of 19°C. Humidity levels are expected to be high, around 91%, contributing to a potentially muggy atmosphere. Wind speeds will be moderate, with a maximum of 28.97 kph.Given the high probability of rain and elevated humidity, Londoners should be prepared for a damp day. While there will be periods of sunshine, the likelihood of showers means outdoor plans might need to be flexible. Carrying an umbrella and wearing waterproof footwear is strongly advised to navigate the city comfortably. The combination of warmth and humidity suggests a day where staying hydrated will also be important.Outlook for the Week AheadLooking ahead, the weather in London is set to become significantly wetter. Tomorrow, August 27, heavy rain is predicted, with temperatures ranging from a high of 25°C to a low of 17°C. This wet spell is expected to continue with light showers on August 28, where the mercury will peak at 22°C and dip to 16°C. Light rain is also forecast for August 29, with similar temperature ranges. The latter half of the week shows a return to more settled conditions, with sunny intervals expected on August 30 and August 31, bringing slightly cooler temperatures. September 1 is anticipated to bring a mix of conditions with a high of 23°C and a low of 15°C.Catch the latest World News and Live updates. Download the TOI app.