Virgin Islands weather in September 2025

Expect 88°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Virgin Islands in September. Check more long-term weather averages for Virgin Islands in September before you book your next holiday to Virgin Islands in 2025/2026.

  • 88°F maximum daytime temperature in September in Virgin Islands (St Thomas)88
    88°F max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in September in Virgin Islands (St Thomas)16
    16 days with some rainfall
  • 75°F minimum night-time temperature in September in Virgin Islands (St Thomas)75
    75°F min night temperature
  • 12 hours of daylight per day in September in Virgin Islands (St Thomas)12
    12 hours of daylight per day
  • High heat & humidity in September in Virgin Islands (St Thomas)H
    High heat & humidity
  • 5.6 inches monthly rainfall in September in Virgin Islands (St Thomas)5.6
    5.6 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Virgin Islands (St Thomas)11
    11+ (Extreme) UV index
  • 84°F sea temperature in September in Virgin Islands (St Thomas)84
    84°F sea temperature

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The September weather guide for Virgin Islands (St Thomas) 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.

Top Virgin Islands destinations

Below are average maximum temperatures at popular countries, regions and places in the Virgin Islands in September. Select a holiday destination to see more weather parameters.

All Virgin Islands destinations

Metric (°C)  |  Imperial (°F)

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How hot is it in the Virgin Islands in September?

Daytime temperatures usually reach 88°F in St Thomas, Virgin Islands in September with high heat and humidity, falling to 75°F at night.

How sunny is it in the Virgin Islands in September?

There are normally 8 hours of bright sunshine each day in St Thomas, Virgin Islands in September - that's 63% of daylight hours.

How warm is the sea around the Virgin Islands in September?

The average sea temperature around St Thomas, Virgin Islands in September is 84°F.

Does it rain in the Virgin Islands in September?

There are usually 16 days with some rain in St Thomas, Virgin Islands in September and the average monthly rainfall is 5.6 inches.

What is the chance of a hurricane in the Virgin Islands in September?

On average 1.1 days in September in St Thomas, Virgin Islands are likely to be affected by the passage of one or more tropical storms.

Virgin Islands September sunrise & sunset times

Browse the sunrise and sunset times for Virgin Islands in September 2025. Select a month to view Virgin Islands sunrise and sunset times for the next 12 months. The Virgin Islands sunrise and sunset times shown below are for St Thomas.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:05 18:34
Monday, 15th September 2025 06:08 18:22
Tuesday, 30th September 2025 06:10 18:09

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