Swansea weather in September 2019

  • 17°C maximum daytime temperature in September in Swansea17
    17°C max day temperature
  • 5 hours of sunshine per day (36% of daylight hours) in September in Swansea5
    5 hours of sunshine per day
  • 16 days with some rainfall in September in Swansea16
    16 days with some rainfall
  • 11°C minimum night-time temperature in September in Swansea11
    11°C min night temperature
  • 13 hours of daylight per day in September in Swansea13
    13 hours of daylight per day
  • No heat & humidity in September in Swansea0
    No heat & humidity
  • 111 mm monthly rainfall in September in Swansea111
    111 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Swansea4
    4 (Moderate) UV index
  • 17°C sea temperature in September in Swansea17
    17°C sea temperature

Going to Swansea? Find the best month to visit Swansea based on the weather.

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Expect 17°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Swansea in September. Check more long-term weather averages for Swansea in September before you book your next holiday to UK in 2019/2020.

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More about Swansea

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The September weather guide for Swansea, UK 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.

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

Guide to Swansea weather in September

The average maximum daytime temperature in Swansea in September is a comfortable 17°C (63°F). The average night-time temperature is usually a cool 11°C (52°F). There are usually 5 hours of bright sunshine each day, which represents 36% of the 13 hours of daylight.

Expect 111mm (4.4 inches) of rainfall across the whole of September with 16 days with some rain falling. Maximum UV levels will be moderate (4 UV index) at midday when the skies are clear.

The average sea temperature in and around Swansea in September is 17°C (63°F).

Swansea sunrise & sunset times for September 2019

Browse the sunrise & sunset times for Swansea in September 2019. Select a month to view Swansea sunrise & sunset times for the next twelve months.

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Date Sunrise times Sunset times
Sunday, 1st September 2019 06:28 20:03
Monday, 2nd September 2019 06:29 20:01
Tuesday, 3rd September 2019 06:31 19:59
Wednesday, 4th September 2019 06:32 19:56
Thursday, 5th September 2019 06:34 19:54
Friday, 6th September 2019 06:36 19:52
Saturday, 7th September 2019 06:37 19:50
Sunday, 8th September 2019 06:39 19:47
Monday, 9th September 2019 06:40 19:45
Tuesday, 10th September 2019 06:42 19:43
Wednesday, 11th September 2019 06:44 19:40
Thursday, 12th September 2019 06:45 19:38
Friday, 13th September 2019 06:47 19:36
Saturday, 14th September 2019 06:48 19:33
Sunday, 15th September 2019 06:50 19:31
Monday, 16th September 2019 06:52 19:29
Tuesday, 17th September 2019 06:53 19:27
Wednesday, 18th September 2019 06:55 19:24
Thursday, 19th September 2019 06:56 19:22
Friday, 20th September 2019 06:58 19:20
Saturday, 21st September 2019 07:00 19:17
Sunday, 22nd September 2019 07:01 19:15
Monday, 23rd September 2019 07:03 19:13
Tuesday, 24th September 2019 07:04 19:10
Wednesday, 25th September 2019 07:06 19:08
Thursday, 26th September 2019 07:08 19:06
Friday, 27th September 2019 07:09 19:03
Saturday, 28th September 2019 07:11 19:01
Sunday, 29th September 2019 07:13 18:59
Monday, 30th September 2019 07:14 18:57
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