San José Weather & Climate: Best Time to Visit
San José, Costa Rica, enjoys a steady warm climate throughout the year. It also has a notably wet climate with substantial precipitation. Now, let’s break down all the climate details for a clearer picture.
Monthly Temperature in San José
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 January.
At night, you can expect temperatures ranging from 17°C (63°F) in April to around 15°C (59°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San José
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
Sunshine Hours in San José
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
Humidity in San José by Month
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
San José 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit San José
During January, February, March, April and December, San José experiences its most favorable weather, with temperatures between 24°C (74°F) and 26°C (78°F). These mild conditions make it an excellent time for a visit.The weather does bring rainfall during this period, between 61 mm (2.4 in) and 150 mm (5.9 in).
Plan accordingly for May, June, July, August, September, October and November, when conditions bring the heaviest precipitation. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
