San Jose (CA) Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from comfortable to moderate in San Jose. Average maximum daytime temperatures range from a comfortable 27°C (81°F) in July, the warmest time of the year, to a moderate 15°C (59°F) during cooler months like December.

At night, you can expect temperatures ranging from 15°C (59°F) in July to around 5°C (41°F) during December.

Check out our detailed temperature page for more information.

Temperature ranges by month

With annual rainfall averaging 309 mm (12 in), San Jose maintains relatively low precipitation levels throughout the seasons. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 63 mm (2.5 in) of precipitation, recorded across 11 rainy days. In contrast, the driest month July brings less rainfall, with 0.1 mm (0 in) over 0 rainy days. For more details, please visit our San Jose Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in San Jose. While May receives considerable daily sunshine with up to 10.8 hours, December marks the darkest time of the year, where sunshine is scarce with only 5.3 hours of sunlight per 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 Jose.

The city experiences its highest humidity in January, reaching 80%. In June, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year