Half Moon Bay (CA) Sunshine Hours by Month

When exploring climate, sunlight hours tell an important story. This page shows the total number of hours of direct sunlight per month and the average hours per day in Half Moon Bay, California, United States of America. This average is based on long-term data collected between 1990 and 2020.

Monthly hours of sunshine

Sunshine in Half Moon Bay varies greatly throughout the year. The sunniest month, May, reaches an impressive 324 hours, while December, the darkest month, offers only 160 hours. The total annual amount of sun is 3058 hours.

Daily hours of sunshine

In Half Moon Bay, summer days are longer and more sunny, with daily sunshine hours peaking at 10.8 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 5.3 hours per day.

Average percent of sunshine

On average the sun shines 78% of the time during the day in April, the highest percentage of any month. December has the lowest percentage at 54%.

Half Moon Bay enjoys an average of 3058 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

The city of Rome, Italy, experiences 2470 hours of sunshine annually, adding to its charm as a year-round tourist destination.

In contrast, Juneau, Alaska, receives only about 1523 hours of sunshine per year and is known for its very short days in winter and frequently overcast conditions.

The climate in San Francisco, USA, includes 3072 hours of sunshine annually, thanks to its mild coastal weather.

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

December, Half Moon Bay’s wettest month, receives 5.6 mm (0.2 in) of rainfall and has a maximum daytime temperature of 15°C (59°F). During the driest month July you can expect a temperature of 21°C (70°F).

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