Today's weather in London - 21 September
By Mr.Data 21st Sep 2025
By Mr.Data 21st Sep 2025

Weather Forecast for London: Sunday
Overall Summary: London will experience a partly cloudy Sunday with moderate temperatures and brisk winds. Residents can expect a day with varying cloud cover and a comfortable range of temperatures, offering a typical autumn feel.
Detailed Weather Report: Throughout Sunday, Londoners will witness a sky dotted with clouds, offering glimpses of blue at times as the day progresses. The maximum temperature is anticipated to reach a mild 15°C, providing a pleasant atmosphere for outdoor activities, albeit with some chill in the air. Temperatures are forecasted to dip to 10°C at the day’s lowest point, particularly during the early morning and late evening hours.
The humidity level will be moderate, standing at 63%, indicating comfortable moisture levels in the air, which should be agreeable for most individuals. The chance of precipitation is relatively low at 13%, suggesting minimal likelihood of rain showers throughout the day.
One notable aspect of the day’s weather is the considerable wind speed, which is expected to reach up to 38 mph. This brisk wind may bring a noticeable chill, particularly in exposed areas, and could potentially cause minor disruptions.
Commuting Advice: Given the significant wind speeds, those commuting by bicycle or on foot may experience some resistance, so it is advisable to allocate extra time for travel. Motorists should keep an eye on lighter vehicles or trailers that can be affected by strong gusts.
Advice for the Day: While the weather looks generally accommodating for outdoor activities, it is wise to dress in layers to adapt to temperature changes throughout the day. A windproof jacket will be beneficial to counter the strong winds. Taking an umbrella just in case is always a sound choice, even though the chance of rain is low.
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