San José Weather & Climate: Best Time to Visit

The climate in San José remains fairly constant, offering comfortable temperatures throughout the year. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in April, the warmest time of the year, to a comfortable 24°C (75°F) during cooler months like November.

At night, you can expect temperatures ranging from 17°C (63°F) in April to around 15°C (59°F) during November.

Check out our detailed temperature page for more information.

Temperature ranges by month

San José is known for its substantial rainfall, with annual precipitation reaching 3381 mm (133 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, October it receives heavy rainfall, averaging 490 mm (19 in) of precipitation, recorded across 23 rainy days. In contrast, the driest month March brings less rainfall, with 61 mm (2.4 in) over 8 rainy days. For more details, please visit our San José 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 José. While March receives considerable daily sunshine with up to 9.5 hours, June marks the darkest time of the year, where sunshine is scarce 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 relative humidity is high throughout the year in San José.

The city experiences its highest humidity in October, reaching 87%. In March, the humidity drops to its lowest level at 66%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year