San Luis Obispo (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 San Luis Obispo, California, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

Sunshine in San Luis Obispo varies greatly throughout the year. The sunniest month, July, reaches an impressive 352 hours, while January, the darkest month, offers only 208 hours. The total annual amount of sun is 3187 hours.

Daily hours of sunshine

For those who appreciate different seasons, San Luis Obispo serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 11.7 hours of sunshine daily, and embrace the darker days in January, offering only 6.9 hours of daily sunlight.

San Luis Obispo enjoys an average of 3187 hours of sunshine annually. Let’s compare this with some popular tourist destinations:

Athens, Greece, enjoys 2769 hours of sunshine each year, making it one of the sunniest destinations in the Mediterranean region.

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

Boston, USA, enjoys 2629 hours of sunshine annually, with distinct seasons and many bright, sunny days.

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

December, San Luis Obispo’s wettest month, receives 0.4 mm (0.02 in) of rainfall and has a maximum daytime temperature of 17°C (63°F). During the driest month August you can expect a temperature of 27°C (81°F).

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