Union Island weather in December 2024

Expect 29°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Union Island in December. Check more long-term weather averages for Union Island in December before you book your next holiday to St Vincent & the Grenadines in 2024/2025.

  • 29°C maximum daytime temperature in December in Union Island29
    29°C max day temperature
  • 7 hours of sunshine per day
  • 18 days with some rainfall in December in Union Island18
    18 days with some rainfall
  • 21°C minimum night-time temperature in December in Union Island21
    21°C min night temperature
  • 11 hours of daylight per day in December in Union Island11
    11 hours of daylight per day
  • High heat & humidity in December in Union IslandH
    High heat & humidity
  • 138 mm monthly rainfall in December in Union Island138
    138 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in December in Union Island9
    9 (Very High) UV index
  • 28°C sea temperature in December in Union Island28
    28°C sea temperature

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The December 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 December?

Daytime temperatures usually reach 29°C in Union Island in December with high heat and humidity, falling to 21°C at night.

How sunny is it in Union Island in December?

There are normally 7 hours of bright sunshine each day in Union Island in December - that's 65% of daylight hours.

How warm is the sea around Union Island in December?

The average sea temperature around Union Island in December is 28°C.

Does it rain in Union Island in December?

There are usually 18 days with some rain in Union Island in December and the average monthly rainfall is 138mm.

Union Island December sunrise & sunset times

Browse the sunrise and sunset times for Union Island in December 2024. Select a month to view Union Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 06:12 17:38
Monday, 16th December 2024 06:20 17:43
Tuesday, 31st December 2024 06:27 17:51

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