Weather in St Thomas in September 2018

  • 31°C maximum daytime temperature in September in St Thomas31
    31°C max day temperature
  • 8 hours of sunshine per day (63% of daylight hours) in September in St Thomas8
    8 hours of sunshine per day
  • 16 days with some rainfall in September in St Thomas16
    16 days with some rainfall
  • 24°C minimum night-time temperature in September in St Thomas24
    24°C min night temperature
  • 12 hours of daylight per day in September in St Thomas12
    12 hours of daylight per day
  • High heat & humidity in September in St ThomasH
    High heat & humidity
  • 143 mm monthly rainfall in September in St Thomas143
    143 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in St Thomas11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in St Thomas29
    29°C sea temperature

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

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Expect 31°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in St Thomas in September. Check more long-term weather averages for St Thomas in September before you book your next holiday to Virgin Islands in 2018.

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More about St Thomas

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

Guide to St Thomas weather in September

The average maximum daytime temperature in St Thomas in September is a hot 31°C (88°F) with high heat & humidity. The average night-time temperature is usually a warm 24°C (75°F). There are usually 8 hours of bright sunshine each day, which represents 63% of the 12 hours of daylight.

Expect 143mm (5.6 inches) of rainfall across the whole of September with 16 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear.

The average sea temperature in and around St Thomas in September is 29°C (84°F).

St Thomas sunrise & sunset times for September 2018

Browse the sunrise & sunset times for St Thomas in September 2018. Select a month to view St Thomas sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st September 2018 06:05 18:34
Sunday, 2nd September 2018 06:05 18:33
Monday, 3rd September 2018 06:06 18:32
Tuesday, 4th September 2018 06:06 18:31
Wednesday, 5th September 2018 06:06 18:31
Thursday, 6th September 2018 06:06 18:30
Friday, 7th September 2018 06:06 18:29
Saturday, 8th September 2018 06:06 18:28
Sunday, 9th September 2018 06:07 18:27
Monday, 10th September 2018 06:07 18:26
Tuesday, 11th September 2018 06:07 18:25
Wednesday, 12th September 2018 06:07 18:25
Thursday, 13th September 2018 06:07 18:24
Friday, 14th September 2018 06:07 18:23
Saturday, 15th September 2018 06:07 18:22
Sunday, 16th September 2018 06:08 18:21
Monday, 17th September 2018 06:08 18:20
Tuesday, 18th September 2018 06:08 18:19
Wednesday, 19th September 2018 06:08 18:18
Thursday, 20th September 2018 06:08 18:18
Friday, 21st September 2018 06:08 18:17
Saturday, 22nd September 2018 06:09 18:16
Sunday, 23rd September 2018 06:09 18:15
Monday, 24th September 2018 06:09 18:14
Tuesday, 25th September 2018 06:09 18:13
Wednesday, 26th September 2018 06:09 18:12
Thursday, 27th September 2018 06:09 18:12
Friday, 28th September 2018 06:10 18:11
Saturday, 29th September 2018 06:10 18:10
Sunday, 30th September 2018 06:10 18:09
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