Average Monthly Sunshine in South San Francisco (CA)

The graphs on this page shows the average number of hours per month and per day that South San Francisco receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

Monthly hours of sunshine

Seasonal sunshine in South San Francisco varies. It peaks at 324 hours in May and drops to 160 hours in December. The total annual amount of sun is 3072 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in South San Francisco. While May receives considerable daily sunshine with up to 10.8 hours, December marks the darkest time of the year, where sunshine is scarce with only 5.3 hours of sunlight per day.

South San Francisco’s total hours of sunshine compared to other major cities

South San Francisco enjoys an average of 3072 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

In Lisbon, Portugal, there are approximately 2801 hours of sunshine annually, highlighting its warm and sunny Mediterranean climate.

In contrast, Brussels, UK, receives only about 1590 hours of sunshine per year, known for its frequently overcast and rainy skies.

Osaka, Japan, experiences 2010 hours of sunshine annually, with bright, sunny weather in spring and autumn.

In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.

Other climate information

December, South San Francisco’s wettest month, receives 3.7 mm of rainfall and has a maximum daytime temperature of 14°C. During the driest month July you can expect a temperature of 21°C.

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