San Ramón Weather & Climate: Best Time to Visit

In San Ramón temperatures are generally consistent throughout the year. Average daytime temperatures reach a comfortable 29°C (84°F) in March. In January, the coolest month of the year, temperatures drop to a comfortable 27°C (81°F).

At night, temperatures range from around 20°C (68°F) in March to 18°C (64°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

San Ramón experiences significant rainfall throughout the year, averaging 2857 mm (112 in) of precipitation annually. San Ramón can be quite wet during October, receiving approximately 441 mm (17 in) of precipitation over 23 rainy days.

In contrast, during the driest month (February), you will experience much drier conditions, with 39 mm (1.5 in) of precipitation spread across 8 rainy days days. For more details, please visit our San Ramón Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

San Ramón can be enjoyed more throughout the sunniest month of January under a blue sky, with approximately 9.5 hours of sunshine daily. In contrast, the city experiences much darker days in June, with only 4.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The city experiences its highest humidity in October, reaching 88%. In April, the humidity drops to its lowest level at 79%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year