San Rafael Weather & Climate: Best Time to Visit

Visitors to San Rafael can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 30°C (86°F) in July to a chilly 8°C (46°F) in January.

Nighttime temperatures range from 16°C (61°F) in July to 0°C (32°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, San Rafael experiences moderate precipitation patterns, averaging 630 mm (25 in) yearly. The seasons in San Rafael bring significant changes in precipitation. The wettest month, October, receives moderate rainfall, with an average of 73 mm (2.9 in) of precipitation. This rainfall is distributed across 11 rainy days.

In contrast, the driest month, July, experiences much less rainfall, totaling 17 mm (0.7 in) over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our San Rafael Precipitation page.

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

The average number of days each month with precipitation

In San Rafael, summer days are longer and more sunny, with daily sunshine hours peaking at 11.7 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.1 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in San Rafael.

The city experiences its highest humidity in January, reaching 77%. In July, the humidity drops to its lowest level at 41%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year