Climate Insights for San José

The climate in San José is temperate. The average annual temperature is 14°C and approximately 3,329 mm of precipitation falls per year. San José receives a notable amount of rainfall throughout the year, including during its driest month. San José sits near the equator, so seasonal temperature differences are minimal throughout the year.The climate in San José is temperate. The average annual temperature is 58°F and approximately 131.1 in of precipitation falls per year. San José receives a notable amount of rainfall throughout the year, including during its driest month. San José sits near the equator, so seasonal temperature differences are minimal throughout the year.

San José has relatively stable temperatures year-round, staying within a 10°C range. September is the warmest month, though highs remain moderate at 20°C with a mean of 14°C. January is the coolest month, with minimum temperatures around 10°C and an average of 14°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.San José has relatively stable temperatures year-round, staying within a 17°F range. September is the warmest month, though highs remain moderate at 67°F with a mean of 58°F. January is the coolest month, with minimum temperatures around 50°F and an average of 57°F. On average, daily temperatures fluctuate by about 15°F between overnight lows and afternoon highs.

San José is a very wet location, receiving approximately 3,329 mm of precipitation annually, which averages out to around 277 mm per month. The wettest month is March, averaging 515 mm of rainfall. November and April also tend to see above-average precipitation. The driest month is August, with just 81 mm. That's 434 mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.San José is a very wet location, receiving approximately 131.1 in of precipitation annually, which averages out to around 10.9 in per month. The wettest month is March, averaging 20.3 in of rainfall. November and April also tend to see above-average precipitation. The driest month is August, with just 3.2 in. That's 17.1 in less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

San José is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.San José is relatively calm, with an average annual wind speed of 2mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is July, averaging 2mph, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 2mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 0mph between the calmest and windiest months.

The table below shows monthly climate averages for San José based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for San José based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.