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.

5-day weather forecast updated at 04:01 on Saturday 1st November 2025 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 Saturday 1st November 2025

Expect isolated thunderstorms 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 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 76% chance of some rain and a fresh breeze of 34 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 28°C minimum temperature28
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 76% chance of some rain76
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Fresh breeze of 34 kph from the East34
    kph wind from E

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Union Island weather for Sunday 2nd November 2025

Expect broken clouds in Union Island, St Vincent & the Grenadines with a maximum temperature of 28°C, low 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 fresh breeze of 34 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 28°C minimum temperature28
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Fresh breeze of 34 kph from the East34
    kph wind from E

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Union Island weather for Monday 3rd November 2025

Expect broken clouds in Union Island, St Vincent & the Grenadines with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 28°C minimum temperature28
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 26 kph from the East26
    kph wind from E

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Union Island weather for Tuesday 4th November 2025

Expect isolated thunderstorms in Union Island, St Vincent & the Grenadines with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 38% chance of some rain and a moderate breeze of 20 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 28°C minimum temperature28
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 38% chance of some rain38
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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Union Island weather for Wednesday 5th November 2025

Expect scattered clouds in Union Island, St Vincent & the Grenadines with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 28°C minimum temperature28
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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Metric (°C / mm)  |  Imperial (°F / inches)

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