Weather in Belfast in September 2019

  • 16°C maximum daytime temperature in September in Belfast16
    16°C max day temperature
  • 4 hours of sunshine per day (30% of daylight hours) in September in Belfast4
    4 hours of sunshine per day
  • 17 days with some rainfall in September in Belfast17
    17 days with some rainfall
  • 9°C minimum night-time temperature in September in Belfast9
    9°C min night temperature
  • 13 hours of daylight per day in September in Belfast13
    13 hours of daylight per day
  • No heat & humidity in September in Belfast0
    No heat & humidity
  • 94 mm monthly rainfall in September in Belfast94
    94 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Belfast3
    3 (Moderate) UV index
  • 14°C sea temperature in September in Belfast14
    14°C sea temperature

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

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Expect 16°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Belfast in September. Check more long-term weather averages for Belfast in September before you book your next holiday to UK in 2019/2020.

  • Save up to 20% on ALL car hire bookings for Belfast
  • Book online for Belfast airport locations only
  • Standard blackout periods apply

More about Belfast

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

Guide to Belfast weather in September

The average maximum daytime temperature in Belfast in September is a comfortable 16°C (61°F). The average night-time temperature is usually a cool 9°C (48°F). There are usually 4 hours of bright sunshine each day, which represents 30% of the 13 hours of daylight.

Expect 94mm (3.7 inches) of rainfall across the whole of September with 17 days with some rain falling. Maximum UV levels will be moderate (3 UV index) at midday when the skies are clear.

The average sea temperature in and around Belfast in September is 14°C (57°F).

Belfast sunrise & sunset times for September 2019

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st September 2019 06:30 20:16
Monday, 2nd September 2019 06:32 20:14
Tuesday, 3rd September 2019 06:34 20:11
Wednesday, 4th September 2019 06:36 20:09
Thursday, 5th September 2019 06:37 20:06
Friday, 6th September 2019 06:39 20:04
Saturday, 7th September 2019 06:41 20:01
Sunday, 8th September 2019 06:43 19:59
Monday, 9th September 2019 06:45 19:56
Tuesday, 10th September 2019 06:47 19:54
Wednesday, 11th September 2019 06:48 19:51
Thursday, 12th September 2019 06:50 19:49
Friday, 13th September 2019 06:52 19:46
Saturday, 14th September 2019 06:54 19:44
Sunday, 15th September 2019 06:56 19:41
Monday, 16th September 2019 06:57 19:39
Tuesday, 17th September 2019 06:59 19:36
Wednesday, 18th September 2019 07:01 19:33
Thursday, 19th September 2019 07:03 19:31
Friday, 20th September 2019 07:05 19:28
Saturday, 21st September 2019 07:07 19:26
Sunday, 22nd September 2019 07:08 19:23
Monday, 23rd September 2019 07:10 19:21
Tuesday, 24th September 2019 07:12 19:18
Wednesday, 25th September 2019 07:14 19:16
Thursday, 26th September 2019 07:16 19:13
Friday, 27th September 2019 07:18 19:11
Saturday, 28th September 2019 07:20 19:08
Sunday, 29th September 2019 07:21 19:06
Monday, 30th September 2019 07:23 19:03
  • Save up to 20% on ALL car hire bookings for Belfast
  • Book online for Belfast airport locations only
  • Standard blackout periods apply

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