Climate Insights for San José

The climate in San José is hot. The average annual temperature is 25°C and approximately 1,014 mm of precipitation falls per year. June is the wettest month, receiving around 183 mm of rainfall. San José is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are January, February, December, when temperatures can drop to 18°C.The climate in San José is hot. The average annual temperature is 78°F and approximately 39.9 in of precipitation falls per year. June is the wettest month, receiving around 7.2 in of rainfall. San José is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, September. The coldest months are January, February, December, when temperatures can drop to 65°F.

San José sees moderate temperature variation throughout the year, ranging from 18°C to 32°C. The warmest month is July, when average highs reach 32°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 18°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.San José sees moderate temperature variation throughout the year, ranging from 65°F to 90°F. The warmest month is July, when average highs reach 90°F and the mean temperature sits around 82°F. January is the coolest month, with minimum temperatures around 65°F and an average of 71°F. Daily temperature variation is modest, with an average difference of 14°F between highs and lows.

San José is a moderately rainy area, receiving approximately 1,014 mm of precipitation annually, which averages out to around 85 mm per month. The wettest month is June, averaging 183 mm of rainfall. September and August also tend to see above-average precipitation. The driest month is February, with just 22 mm. That's 161 mm less than June, 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 moderately rainy area, receiving approximately 39.9 in of precipitation annually, which averages out to around 3.3 in per month. The wettest month is June, averaging 7.2 in of rainfall. September and August also tend to see above-average precipitation. The driest month is February, with just 0.9 in. That's 6.3 in less than June, 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 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 13km/h in winter, 12km/h in spring, 10km/h in summer, 12km/h in autumn.San José is mildly breezy, with an average annual wind speed of 7mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is January, averaging 8mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in September, with average winds dropping to 6mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2mph between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 8mph in winter, 8mph in spring, 6mph in summer, 7mph in autumn.

The best time to visit San José is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 31 mm per month. By contrast, July can be uncomfortably hot with temperatures reaching 32°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit San José is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 74°F with modest rainfall averaging 1.2 in per month. By contrast, July can be uncomfortably hot with temperatures reaching 90°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.