Ontario (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 Ontario, California, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020.

Monthly hours of sunshine

Seasonal sunshine in Ontario varies. It peaks at 369 hours in July and drops to 198 hours in January. The total annual amount of sun is 3279 hours.

Daily hours of sunshine

In Ontario, 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 per day.

Ontario vs Major Cities: Sunshine Compared

Ontario enjoys an average of 3279 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.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 2520 hours of sunshine annually.

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

Related Climate Data for Ontario

December, Ontario’s wettest month, receives 0.9 mm (0.04 in) of rainfall and has a maximum daytime temperature of 19°C (66°F). During the driest month June you can expect a temperature of 30°C (86°F).

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