Guam weather live forecast

Tomorrow's maximum temperature in Guam is expected to be 90°F.

5-day weather forecast updated at 04:00 on Sunday 15th June 2025 GMT

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

Guam weather forecast by day

Below are the detailed weather forecasts for Guam for the next 5 days. The forecasts shown are for Agana and may not represent the whole of Guam. Browse more destinations in Guam to view more weather forecasts.

Guam weather for Sunday 15th June 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 40% chance of some rain and a gentle breeze of 10 mph from the east.

  • 90°F maximum temperature90
    °F maximum temperature
  • 81°F minimum temperature81
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 40% chance of some rain40
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 10 mph from the East10
    mph wind from E

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Guam weather for Monday 16th June 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 67% chance of some rain and a gentle breeze of 9 mph from the east.

  • 88°F maximum temperature88
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 67% chance of some rain67
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 9 mph from the East9
    mph wind from E

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Guam weather for Tuesday 17th June 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 79% chance of some rain and a gentle breeze of 9 mph from the east.

  • 88°F maximum temperature88
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 79% chance of some rain79
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 9 mph from the East9
    mph wind from E

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Guam weather for Wednesday 18th June 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 67% chance of some rain and a gentle breeze of 12 mph from the east.

  • 88°F maximum temperature88
    °F maximum temperature
  • 81°F minimum temperature81
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 67% chance of some rain67
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 12 mph from the East12
    mph wind from E

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Guam weather for Thursday 19th June 2025

Expect broken clouds in Guam with a maximum temperature of 88°F, moderate 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 13 mph from the east.

  • 88°F maximum temperature88
    °F maximum temperature
  • 81°F minimum temperature81
    °F 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
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 13 mph from the East13
    mph wind from E

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