Union Island weather in April 2025

Expect 30°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Union Island in April. Check more long-term weather averages for Union Island in April before you book your next holiday to St Vincent & the Grenadines in 2025/2026.

  • 30°C maximum daytime temperature in April in Union Island30
    30°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in April in Union Island10
    10 days with some rainfall
  • 22°C minimum night-time temperature in April in Union Island22
    22°C min night temperature
  • 12 hours of daylight per day in April in Union Island12
    12 hours of daylight per day
  • High heat & humidity in April in Union IslandH
    High heat & humidity
  • 58 mm monthly rainfall in April in Union Island58
    58 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Union Island11
    11+ (Extreme) UV index
  • 27°C sea temperature in April in Union Island27
    27°C sea temperature

More about Union Island

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The April weather guide for St Vincent & the Grenadines (Union Island) 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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More about St Vincent & the Grenadines

How hot is it in Union Island in April?

Daytime temperatures usually reach 30°C in Union Island in April with high heat and humidity, falling to 22°C at night.

How sunny is it in Union Island in April?

There are normally 8 hours of bright sunshine each day in Union Island in April - that's 66% of daylight hours.

How warm is the sea around Union Island in April?

The average sea temperature around Union Island in April is 27°C.

Does it rain in Union Island in April?

There are usually 10 days with some rain in Union Island in April and the average monthly rainfall is 58mm.

Union Island April sunrise & sunset times

Browse the sunrise and sunset times for Union Island in April 2025. Select a month to view Union Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st April 2025 06:02 18:17
Tuesday, 15th April 2025 05:53 18:18
Wednesday, 30th April 2025 05:46 18:20

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