Union Island weather live forecast

Today's maximum temperature in Union Island is expected to be 28°C. Select a day from the live weather forecast for Union Island, St Vincent & the Grenadines for more weather parameters.

Thursday
5th Nov
28

28

6

10
Friday
6th Nov
29

28

7

10
Saturday
7th Nov
29

28

7

10
Sunday
8th Nov
29

28

6

10
Monday
9th Nov
28

28

6

10

5-day weather forecast updated at 04:01 on Thursday 5th November 2026 GMT

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The 5-day weather forecast for St Vincent & the Grenadines (Union Island) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Union Island weather forecast by day

Below are the detailed weather forecasts for Union Island for the next 5 days.

Union Island weather for Thursday 5th November 2026

Expect broken clouds in Union Island, St Vincent & the Grenadines with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-east.

28
°C maximum temperature
28
°C minimum temperature
broken clouds
6
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
19
kph wind from SE

Union Island weather for Friday 6th November 2026

Expect broken clouds in Union Island, St Vincent & the Grenadines with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-east.

29
°C maximum temperature
28
°C minimum temperature
broken clouds
7
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from SE

Union Island weather for Saturday 7th November 2026

29
°C maximum temperature
28
°C minimum temperature
broken clouds
7
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
23
kph wind from SE

Union Island weather for Sunday 8th November 2026

Expect broken clouds in Union Island, St Vincent & the Grenadines with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-east.