Guam weather live forecast

Today's maximum temperature in Guam is expected to be 84°F. Select a day from the live weather forecast for Guam (Agana) for more weather parameters.

5-day weather forecast updated at 04:00 on Sunday 10th August 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 Tuesday 12th August 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and a light breeze of 6 mph from the south-east.

  • 84°F maximum temperature84
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 74% chance of some rain74
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 6 mph from the South-East6
    mph wind from SE

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Guam weather for Wednesday 13th August 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 76% chance of some rain and little or no wind of 4 mph from the south-east.

  • 84°F maximum temperature84
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 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
  • Little or no wind of 4 mph from the South-East4
    mph wind from SE

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Guam weather for Thursday 14th August 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a light breeze of 5 mph from the south-east.

  • 84°F maximum temperature84
    °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 11+ (Extreme)11
    UV index (Extreme)
  • 78% chance of some rain78
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 5 mph from the South-East5
    mph wind from SE

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Guam weather for Friday 15th August 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 84% chance of some rain and a light breeze of 6 mph from the south-east.

  • 86°F maximum temperature86
    °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 11+ (Extreme)11
    UV index (Extreme)
  • 84% chance of some rain84
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 6 mph from the South-East6
    mph wind from SE

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Guam weather for Saturday 16th August 2025

Expect isolated thunderstorms in Guam with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 86% chance of some rain and a light breeze of 7 mph from the north-east.

  • 84°F maximum temperature84
    °F maximum temperature
  • 79°F minimum temperature79
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 86% chance of some rain86
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 7 mph from the North-East7
    mph wind from NE

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