San Diego (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 San Diego, California, United States of America. This average is based on long-term data collected between 1990 and 2020.

Monthly hours of sunshine

San Diego experiences sunny spells throughout the year. The sunniest month, July, sees up to 304 hours of sunshine, while November, the least sunny month, still provides a respectable 230 hours. The total annual sunshine amounts to 3069 hours.

Daily hours of sunshine

The difference in daily sunshine hours between July (10.1 hours per day) and February (7.7 hours per day) offers moderate variety for visitors and residents.

Average percent of sunshine

On average the sun shines 75% of the time during the day in January, the highest percentage of any month. June has the lowest percentage at 57%.

San Diego enjoys an average of 3069 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.

In contrast, London, UK, receives only about 1659 hours of sunshine per year, known for its frequently overcast and rainy skies.

In Chicago, USA, the annual sunshine averages 2520 hours, contributing to its humid continental climate.

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

December, San Diego’s wettest month, receives 4.3 mm (0.2 in) of rainfall and has a maximum daytime temperature of 19°C (66°F). During the driest month June 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 San Diego Precipitation page.