Union Island Weather & Climate: Saint Vincent & Grenadines

Climate by month across Union Island, Saint Vincent & Grenadines, average temperatures, rainfall and the best time to visit.

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Climate overview of Union Island

Whether you're visiting Union Island in Saint Vincent & Grenadines during the peak of September (30°C (86°F)) or the cooler months around February (27°C (81°F)), knowing what to pack starts with understanding the local climate. Our overview is based on data from Clifton, the region's most prominent city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.

In Union Island, no particular months stand out for consistently comfortable weather, as average temperatures fluctuate year-round.

When it comes to rainfall, Union Island sees significant variations throughout the year. October tends to be the wettest, receiving 165 mm (6.5 in) of rain, while February is much drier with just 35 mm (1.4 in).

January is the sunniest period, with ideal conditions for exploring the region and all it has to offer.

Explore Union Island by month

Pick a month to see the average temperature, rainfall and sunshine in Union Island — and find the best time to visit. (based on Clifton)

Popular cities by month

Compare cities per month. Toggle cities on/off.

Clifton
Day temperature (°C)
Monthly rainfall (mm)
Monthly sunshine (hours)

Climate map of Union Island

Average daily temperature, monthly rainfall & sunshine hours across cities.

Avg day temp (°C)
32°

Compare popular cities

Average daytime and nighttime temperatures, yearly rainfall and sunshine.

Clifton 28°C (82°F) 30°C (86°F) 25°C (77°F) 27°C (81°F) 1206 mm (47 in) 2,892 hours

Places in Union Island, Saint Vincent & Grenadines

Select a city to see its average temperature, precipitation and hours of sunshine over the year.

Cities

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Other regions in Saint Vincent & Grenadines