Union Island weather live forecast

Tomorrow's maximum temperature in Union Island is expected to be 28°C.

5-day weather forecast updated at 04:01 on Saturday 12th July 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 12th July 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 11 (Extreme) 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
  • 27°C minimum temperature27
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 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 Sunday 13th July 2025

Expect broken clouds in Union Island, St Vincent & the Grenadines with a maximum temperature of 27°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 moderate breeze of 20 kph from the east.

  • 27°C maximum temperature27
    °C maximum temperature
  • 26°C minimum temperature26
    °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
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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Union Island weather for Monday 14th July 2025

Expect isolated thunderstorms in Union Island, St Vincent & the Grenadines with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 11 (Extreme) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 24% chance of some rain and a gentle breeze of 19 kph from the east.

  • 27°C maximum temperature27
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 24% chance of some rain24
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 19 kph from the East19
    kph wind from E

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Union Island weather for Tuesday 15th July 2025

Expect isolated thunderstorms in Union Island, St Vincent & the Grenadines with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a moderate breeze of 20 kph from the east.

  • 27°C maximum temperature27
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 43% chance of some rain43
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    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 16th July 2025

Expect isolated thunderstorms in Union Island, St Vincent & the Grenadines with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 22 kph from the east.

  • 27°C maximum temperature27
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 64% chance of some rain64
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 22 kph from the East22
    kph wind from E

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

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