Millbrae (CA) Sunshine Hours by Month

To truly understand a climate, we must look at its sunshine. This page shows the total number of hours of direct sunlight per month and the average hours per day in Millbrae, California, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average.

Monthly hours of sunshine

Seasonal sunshine in Millbrae varies. It peaks at 324 hours in May and drops to 160 hours in December. The total annual amount of sun is 3058 hours.

Daily hours of sunshine

For those who appreciate different seasons, Millbrae serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 10.8 hours of sunshine daily, and embrace the darker days in December, offering only 5.3 hours of daily sunlight.

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%.

Millbrae enjoys an average of 3058 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, Reykjavík, Iceland, receives only about 1330 hours of sunshine per year, known for its frequently overcast and rainy skies.

Stockholm, Sweden, receives approximately 1907 hours of sunshine annually.

Perth, Australia, enjoys 3180 hours of sunshine annually, the highest among major Australian cities.

December, Millbrae’s wettest month, receives 3.4 mm (0.1 in) of rainfall and has a maximum daytime temperature of 14°C (57°F). During the driest month July you can expect a temperature of 22°C (72°F).

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