Guam Sunshine Hours by Month

Sunshine plays a big role in understanding the climate of a city. This page shows the total number of hours of direct sunlight per month and the average hours per day in Guam, Micronesia. This average is based on long-term data collected between 1990 and 2020.

Monthly hours of sunshine

If you're visiting Guam, timing is key. In May, you can enjoy up to 223 hours of sunshine, while the shorter days of October provide just 133 hours. The total annual amount of sun is 2058 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Guam. While May receives considerable daily sunshine with up to 7.4 hours, September marks the darkest time of the year, where sunshine is scarce with only 4.4 hours of sunlight per day.

Guam enjoys an average of 2058 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Barcelona, Spain, there are 2530 hours of sunshine annually and is a city that can be visited year-round.

Manchester, UK, experiences just around 1420 hours of sunshine annually.

Vancouver, Canada, receives approximately 1940 hours of sunshine annually.

In Tokyo, Japan, the average annual sunshine is 1930 hours, with sunny periods between rainy seasons.

August, Guam’s wettest month, receives 161 mm (6.3 in) of rainfall and has a maximum daytime temperature of 30°C (86°F). During the driest month March you can expect a temperature of 28°C (82°F).

For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Guam Precipitation page.