London weather in September 2023

  • 19°C maximum daytime temperature in September in London19
    19°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in September in London11
    11 days with some rainfall
  • 11°C minimum night-time temperature in September in London11
    11°C min night temperature
  • 13 hours of daylight per day in September in London13
    13 hours of daylight per day
  • No heat & humidity in September in London0
    No heat & humidity
  • 55 mm monthly rainfall in September in London55
    55 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in London4
    4 (Moderate) UV index
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Recommended for England

The September weather guide for England (London) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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Metric (°C / mm)  |  Imperial (°F / inches)

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More about England

How hot is it in London in September?

Daytime temperatures usually reach 19°C in London in September, falling to 11°C at night.

How sunny is it in London in September?

There are normally 5 hours of bright sunshine each day in London in September - that's 37% of daylight hours.

Does it rain in London in September?

There are usually 11 days with some rain in London in September and the average monthly rainfall is 55mm.

London September sunrise & sunset times

Browse the sunrise and sunset times for London in September 2023. Select a month to view London sunrise and sunset times for the next 12 months.


Date Sunrise times Sunset times
Friday, 1st September 2023 06:12 19:48
Friday, 15th September 2023 06:35 19:16
Saturday, 30th September 2023 06:59 18:41

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