London Weather in September

What's the weather like in London (England) in September 2023?

The climate in London during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in London and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 11°C (51°F) is normal.

London weather averages (imperial / metric)
Daytime temperature 18.9°C 65.9°F
Nightly temperature 10.6°C 51°F
Average temperature 14.7°C 58.5°F
Daily sunshine 5.2 hrs
Avg rainfall 55 mm 2.2 ins
Rainy days 11 days
Sea temperature 17°C 62.6°F
Humidity 80%
Windspeed 13.3kph 8 mph

On average September is the 6th wettest month of the year in London with around 55mm 2.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.2 hours of sunshine per day.

September temperatures in London

London average temperature in September

September rainfall

London average rain in September

September hourly sunshine

London average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in London in September 2023.

Other monthly averages

Best places to visit in September

UV index Best time to go?

London weather stats

London weather statistics
Hottest month: July 21.7°C 71.1°F
Driest month: February 38mm 1.5ins
Sunniest month: August 6.5hrs
Coldest month: January 6.8°C 44.2°F
Wettest month: December 59mm 2.3ins
Map showing location of London (51.50853, -0.12574) London map pin © Google

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