Average Monthly Sunshine in Riverside (CA)

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

Monthly hours of sunshine

If you're visiting Riverside, timing is key. In July, you can enjoy up to 369 hours of sunshine, while the shorter days of January provide just 198 hours. The total annual amount of sun is 3277 hours.

Daily hours of sunshine

In Riverside, summer days are longer and more sunny, with daily sunshine hours peaking at 12.3 hours in July. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 6.6 hours.

Riverside’s total hours of sunshine compared to other major cities

Riverside 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.

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

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, Riverside’s wettest month, receives 2.9 mm of rainfall and has a maximum daytime temperature of 19°C. During the driest month June you can expect a temperature of 31°C.

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