Guam weather averages

Going to Guam? Find the best month to visit Guam based on the weather.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Check Guam weather averages before you book your next holiday in 2018/2019. Today's maximum temperature in Guam is expected to be 29°C, while the average maximum temperature in August is 31°C. The holiday weather guide shown above is for Agana.

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More about Guam

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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

Guam weather averages: best month

Guam Best month Averages
Warmest April, May, June, July, August, September, October & November 31°C
Sunniest March, April, May & June 7 hours per day
Least rain June 17 days
Warmest sea June, July, August, September, October & November 29°C

Guam climate guide

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Tropical cyclone risk: Guam typhoon season

% of month affected by tropical cyclones
1%
<1%
<1%
1%
2%
2%
5%
7%
8%
8%
5%
2%
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Guam tropical cyclone risk chart above shows the typhoon season for Agana, Guam.

More about tropical cyclones

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Guam weather averages by month

Check Guam holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Guam weather with the USA

Below the Guam weather chart shows maximum daytime temperature for Guam (Agana) and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Guam (Agana)
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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More Guam destinations

All destinations (A to Z)

Can't see your chosen destination? Use our A to Z search to find your required the holiday weather guide:

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