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Hourly Forecast
Daylight Hours
06:43
Sunrise
19:06
Sunset
Moon
Waxing Crescent
12:03
Moonrise
20:15
Moonset
Daily Forecast
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Wednesday
Thursday
Friday
Saturday
Sunday
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Air Quality Data Available
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UV Index
Humidity
Weather in London today, September 15, 2026
Cloud cover dominates in London on September 15, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Cloud leads the morning, peaking close to 99% near 10:00. Sunshine has little room until later in the day.
The day peaks near 22°C and cools toward 14°C. Moisture in the air spans 52%-75%, with the highest values around 10:00. Expect gentle winds, highest near 11:00 at 4.2 km/h.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 13:00. Outdoor plans may still want a flexible backup. Expect visibility near 38.4 km, with poorer spells close to 33.3 km. Daylight runs from 06:43 to 19:06, lasting 12 hours 22 minutes of sunlight today.
In short, cloud leads the story in London on September 15, 2026; expect limited sun and a peak around 22°C.
Frequently asked questions about weather in London
How warm does it get in London?
The warmest month in London is July, with average high temperatures of 22°C. The average temperature during this period is around 18°C.
How cold does it get in London?
The coldest month in London is January, with average low temperatures of 2°C. The average temperature during this period is around 5°C.
What is the wettest time of year in London?
The wettest month in London is October, with an average of 74mm of precipitation.
What is the driest time of year in London?
The driest month in London is April, with an average of 43mm of precipitation.
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