ClimateForecastDecemberJanuary >>

Average Monthly Sunshine hours in Guam

This graph shows the average number of hours per month that Guam receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.


  • On average, May is the sunniest month with 223 hours of sunshine.
  • October has on average the lowest amount of sunshine with 133 hours.
  • On average, the total annual amount of sun is 2050 hours.

Forecast: is it sunny in Guam?

Wed   Dec 04
30°C | 24°C
E 22 km/h
10 mm
partly cloudy and rain

partly cloudy and rain

Thu   Dec 05
31°C | 25°C
E 25 km/h
1.1 mm
partly cloudy and slight rain

partly cloudy and slight rain

Fri   Dec 06
29°C | 25°C
E 22 km/h
2.4 mm
broken clouds and rain

broken clouds and rain

Interested in more climate information?

This site provides you with all the information you need about the climate in Guam.

Our site offers climate and forecast data for every country in the world. Are you going to Micronesia? On this website you can find historical weather averages for many cities in Micronesia. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.