Weather in London in September 2017

Check the weather in London in September based on long-term weather averages before you book your next holiday to UK in 2017. Expect daytime temperatures to reach 19°C with on average 5 hours of sunshine per day in London in September.

What is the weather like in London in September?
How hot is London in September? 19°C
How sunny is London in September? 5 sunshine hours/day
How wet is London in September? 55 mm rainfall

Weather in London in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec All months

  • 19°C maximum daytime temperature in September in London19
    19°C max day temperature
  • 5 hours of sunshine per day (37% of daylight hours) in September in London5
    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

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

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More about London

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More about London weather in September

The average maximum daytime temperature in London in September is a comfortable 19°C (66°F). There are usually 5 hours of bright sunshine each day, which represents 37% of the 13 hours of daylight.

Expect 55mm (2.2 inches) of rainfall across the whole of September with 11 days with some rain falling. Maximum UV levels will be moderate (4 UV index) at midday when the skies are clear. The average night-time temperature is usually a cool 11°C (52°F). The weather in London in September is represented by London.

London sunrise & sunset times for September 2017

Browse the sunrise & sunset times for London in September 2017. Select a month to view London sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st September 2017 06:13 19:47
Saturday, 2nd September 2017 06:15 19:44
Sunday, 3rd September 2017 06:16 19:42
Monday, 4th September 2017 06:18 19:40
Tuesday, 5th September 2017 06:20 19:38
Wednesday, 6th September 2017 06:21 19:35
Thursday, 7th September 2017 06:23 19:33
Friday, 8th September 2017 06:24 19:31
Saturday, 9th September 2017 06:26 19:29
Sunday, 10th September 2017 06:28 19:26
Monday, 11th September 2017 06:29 19:24
Tuesday, 12th September 2017 06:31 19:22
Wednesday, 13th September 2017 06:32 19:19
Thursday, 14th September 2017 06:34 19:17
Friday, 15th September 2017 06:36 19:15
Saturday, 16th September 2017 06:37 19:12
Sunday, 17th September 2017 06:39 19:10
Monday, 18th September 2017 06:40 19:08
Tuesday, 19th September 2017 06:42 19:05
Wednesday, 20th September 2017 06:44 19:03
Thursday, 21st September 2017 06:45 19:01
Friday, 22nd September 2017 06:47 18:59
Saturday, 23rd September 2017 06:48 18:56
Sunday, 24th September 2017 06:50 18:54
Monday, 25th September 2017 06:52 18:52
Tuesday, 26th September 2017 06:53 18:49
Wednesday, 27th September 2017 06:55 18:47
Thursday, 28th September 2017 06:56 18:45
Friday, 29th September 2017 06:58 18:43
Saturday, 30th September 2017 07:00 18:40
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  • Annual RHS membership starts from just £44.25
  • Pay online by direct debit & save 25% in the first year

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Check London weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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