Vacaville (CA) Sunshine Hours by Month

Sunshine is key to understanding how a place experiences its seasons. This page shows the total number of hours of direct sunlight per month and the average hours per day in Vacaville, California, United States of America. This average is based on long-term data collected between 1990 and 2020.

Monthly hours of sunshine

If you're visiting Vacaville, timing is key. In July, you can enjoy up to 440 hours of sunshine, while the shorter days of December provide just 141 hours. The total annual amount of sun is 3602 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Vacaville. While July receives considerable daily sunshine with up to 14.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.7 hours of sunlight per day.

Average percent of sunshine

On average the sun shines 98% of the time during the day in July, the highest percentage of any month. January has the lowest percentage at 48%.

Vacaville enjoys an average of 3602 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.

Vancouver, Canada, receives approximately 1940 hours of sunshine annually.

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

December, Vacaville’s wettest month, receives 0.2 mm (0.01 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 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 Vacaville Precipitation page.