St Croix weather in August 2025

Expect 31°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in St Croix in August. Check more long-term weather averages for St Croix in August before you book your next holiday to Virgin Islands in 2025/2026.

  • 31°C maximum daytime temperature in August in St Croix31
    31°C max day temperature
  • 9 hours of sunshine per day
  • 19 days with some rainfall in August in St Croix19
    19 days with some rainfall
  • 25°C minimum night-time temperature in August in St Croix25
    25°C min night temperature
  • 13 hours of daylight per day in August in St Croix13
    13 hours of daylight per day
  • Very high heat & humidity in August in St CroixVH
    Very High heat & humidity
  • 111 mm monthly rainfall in August in St Croix111
    111 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in St Croix11
    11+ (Extreme) UV index
  • 29°C sea temperature in August in St Croix29
    29°C sea temperature

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The August weather guide for Virgin Islands (St Croix) 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)

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How hot is it in St Croix in August?

Daytime temperatures usually reach 31°C in St Croix in August with very high heat and humidity, falling to 25°C at night.

How sunny is it in St Croix in August?

There are normally 9 hours of bright sunshine each day in St Croix in August - that's 67% of daylight hours.

How warm is the sea around St Croix in August?

The average sea temperature around St Croix in August is 29°C.

Does it rain in St Croix in August?

There are usually 19 days with some rain in St Croix in August and the average monthly rainfall is 111mm.

What is the chance of a hurricane in St Croix in August?

On average less than 1 day in August in St Croix is likely to be affected by the passage of one or more tropical storms.

St Croix August sunrise & sunset times

Browse the sunrise and sunset times for St Croix in August 2025. Select a month to view St Croix sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:58 18:52
Saturday, 16th August 2025 06:02 18:44
Sunday, 31st August 2025 06:05 18:33

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