Pasadena (CA) Sunshine Hours by Month

In climate discussions, the hours of sunlight reveal much about a location. This page shows the total number of hours of direct sunlight per month and the average hours per day in Pasadena, California, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

If you're visiting Pasadena, timing is key. In July, you can enjoy up to 364 hours of sunshine, while the shorter days of November provide just 217 hours. The total annual amount of sun is 3257 hours.

Daily hours of sunshine

In Pasadena, summer days are longer and more sunny, with daily sunshine hours peaking at 12.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 7.2 hours per day.

Average percent of sunshine

On average the sun shines 84% of the time during the day in August, the highest percentage of any month. May has the lowest percentage at 64%.

Pasadena enjoys an average of 3257 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, Brussels, Belgium, receives only about 1590 hours of sunshine per year, known for its frequently overcast and rainy skies.

Toronto, Canada, sees around 2071 hours of sunshine each year, with especially long, bright summer days.

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

December, Pasadena’s wettest month, receives 0.4 mm (0.02 in) of rainfall and has a maximum daytime temperature of 20°C (68°F). During the driest month August you can expect a temperature of 33°C (91°F).

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