Cayo Guillermo weather live forecast

Today's maximum temperature in Cayo Guillermo is expected to be 31°C. Select a day from the live weather forecast for Cayo Guillermo, Cuba for more weather parameters.

5-day weather forecast updated at 04:02 on Sunday 10th August 2025 GMT

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The 5-day weather forecast for Cuba (Cayo Guillermo) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Cayo Guillermo weather forecast by day

Below are the detailed weather forecasts for Cayo Guillermo for the next 5 days.

Cayo Guillermo weather for Monday 11th August 2025

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a moderate breeze of 23 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 28°C minimum temperature28
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 51% chance of some rain51
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 23 kph from the East23
    kph wind from E

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Cayo Guillermo weather for Tuesday 12th August 2025

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 45% chance of some rain and a moderate breeze of 23 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 29°C minimum temperature29
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 45% chance of some rain45
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 23 kph from the East23
    kph wind from E

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Cayo Guillermo weather for Wednesday 13th August 2025

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 35% chance of some rain and a moderate breeze of 21 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 29°C minimum temperature29
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 35% chance of some rain35
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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Cayo Guillermo weather for Thursday 14th August 2025

Expect scattered clouds in Cayo Guillermo, Cuba with a maximum temperature of 30°C, moderate 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.

  • 30°C maximum temperature30
    °C maximum temperature
  • 29°C minimum temperature29
    °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
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 20 kph from the East20
    kph wind from E

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Cayo Guillermo weather for Friday 15th August 2025

Expect isolated thunderstorms in Cayo Guillermo, Cuba with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 48% chance of some rain and a moderate breeze of 21 kph from the east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 29°C minimum temperature29
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 48% chance of some rain48
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 21 kph from the East21
    kph wind from E

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  • Destinations across the Med, Caribbean & USA
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Metric (°C / mm)  |  Imperial (°F / inches)

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