Weekend weather forecast for London - 18 Sep to 20 Sep
By Mr.Data 18th Sep 2026
Weekend Weather Forecast for London
This weekend in London presents a varied weather pattern, offering a mix of partly cloudy skies, cloud cover, and occasional rain. While temperatures remain comfortably warm with highs around 19-21°C, keep an umbrella handy due to the increasing chances of precipitation, particularly on Saturday and Sunday. Here’s a day-by-day breakdown:
Friday: Expect partly cloudy skies throughout Friday, providing a pleasant start to the weekend. The temperature will reach a maximum of 19°C and dip to a minimum of 11°C. With a humidity level of 69% and a mild precipitation chance of 19%, the day should largely remain dry. Winds will be moderate at 22 mph, creating a refreshing breeze.
Saturday: Saturday will bring cloudy skies for most of the day with rain moving in by late afternoon. It will be slightly warmer with a high of 21°C and a low of 16°C. Humidity will be at 76%, and there is a significant 68% chance of precipitation, suggesting a wet day ahead. Winds will pick up to 25 mph, adding a briskness to the air.
Sunday: Sunday is expected to be partly cloudy with intermittent chances of rain. The temperature highs will match Friday’s 19°C, with lows around 14°C. Humidity will be relatively lower at 65%. The precipitation chance remains at 68%, meaning the likelihood of showers persists. Wind speeds decrease slightly to 17 mph, allowing for a calmer day.
Commuting Advice: Commuters should prepare for potentially wet conditions, especially on Saturday and Sunday. Carrying waterproof clothing and umbrellas is advisable, particularly for those travelling during the late afternoon on Saturday. Winds will be stronger on these days as well, so take care when navigating exposed areas.
Advice for Weekend Plans: This weekend, outdoor activities are best planned for Friday when the weather is more stable. If planning for Saturday, consider indoor options or be prepared to move indoor should the rain become persistent. Sunday also presents an opportunity for outdoor plans in the earlier part of the day before rain sets in later. Always check real-time weather updates before heading out.
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