Petaluma (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 Petaluma, California, United States of America. Long-term data from 1990 to 2020 was used to calculate these averages.
Monthly hours of sunshine
If you're visiting Petaluma, timing is key. In May, you can enjoy up to 310 hours of sunshine, while the shorter days of December provide just 160 hours. The total annual amount of sun is 3042 hours.
Daily hours of sunshine
In Petaluma, summer days are longer and more sunny, with daily sunshine hours peaking at 10.3 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 79% of the time during the day in April, the highest percentage of any month. December has the lowest percentage at 55%.
Petaluma vs Major Cities: Sunshine Compared
Petaluma enjoys an average of 3042 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, 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.
In Brisbane, Australia, the annual sunshine averages 2999 hours, making it one of Australia’s sunniest cities.
Related Climate Data for Petaluma
December, Petaluma’s wettest month, receives 0.4 mm (0.02 in) of rainfall and has a maximum daytime temperature of 14°C (57°F). During the driest month August you can expect a temperature of 28°C (82°F).
For more detailed insights into the city’s temperatures, check out our Temperature page. To explore more about precipitation patterns, visit our Petaluma Precipitation page.
