Average Monthly Sunshine in Rancho Cucamonga (CA)

The graphs on this page shows the average number of hours per month and per day that Rancho Cucamonga receives direct sunlight. The numbers are calculated over a 30-year period to provide a reliable average.

Monthly hours of sunshine

Those who love seasonal contrasts will appreciate Rancho Cucamonga. Expect long, bright days with 369 hours in July and darker periods with just 198 hours in January. The total annual amount of sun is 3277 hours.

Daily hours of sunshine

Seasonal changes in sunshine hours are quite obvious in Rancho Cucamonga. While July receives considerable daily sunshine with up to 12.3 hours, January marks the darkest time of the year, where sunshine is scarce with only 6.6 hours of sunlight per day.

Rancho Cucamonga’s total hours of sunshine compared to other major cities

Rancho Cucamonga enjoys an average of 3277 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.

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

Osaka, Japan, experiences 2010 hours of sunshine annually, with bright, sunny weather in spring and autumn.

In Tokyo, Japan, the average annual sunshine is 1930 hours, with sunny periods between rainy seasons.

Other climate information

December, Rancho Cucamonga’s wettest month, receives 1 mm of rainfall and has a maximum daytime temperature of 18°C. During the driest month June you can expect a temperature of 30°C.

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