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Average climate of Guam

The climate of Guam has an average yearly temperature of 31°C. Throughout the year, the average monthly temperature can drop to 30°C and rise to 32°C.

Annually, about 2291 mm of rain falls. This gives a good overview of how much rain to expect in Guam.

The climate of Guam
  • Average yearly temperature: 31°C
  • Highest temperature: 32°C in May and June
  • Lowest temperature: 30°C in January and February
  • Precipitation: 2291 mm per year, averaging 191 mm per month
  • Driest months: 62 mm in March, 84 mm in February and 95 mm in April
  • Wettest months: 361 mm in August, 340 mm in October and 336 mm in September

Temperature per month in Guam

This graph shows the average high temperatures in degrees Celsius for each month in Guam

Temperature per month in Guam

Precipitation per month in Guam

This graph shows the average monthly precipitation in millimeters in Guam.

Precipitation per month in Guam

UV index per month in Guam

This graph shows the average UV index per month in Guam.

UV index per month in Guam

Yearly temperature in Guam

This graph shows the average yearly temperature in Guam, measured in degrees Celsius.

Yearly temperature in Guam

Yearly total precipitation in Guam

This graph shows the average yearly precipitation in millimeters in Guam.

Precipitation per year in Guam

Average weather in Guam per month

Click on a month below to see in detail how the weather typically is in Guam and what to expect. Based on the historical weather data of Guam, you can view the average temperature, precipitation, wind, and UV index for each day of the month.