Climate Insights for San José

The climate in San José is warm and mild. The average annual temperature is 25°C and approximately 897 mm of precipitation falls per year. October is the wettest month, receiving around 172 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: August, July, September. The coldest months are January, February, March, when temperatures can drop to 20°C.The climate in San José is warm and mild. The average annual temperature is 76°F and approximately 35.3 in of precipitation falls per year. October is the wettest month, receiving around 6.8 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: August, July, September. The coldest months are January, February, March, when temperatures can drop to 67°F.

San José has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 26°C. January is the coolest month, with minimum temperatures around 20°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.San José sees moderate temperature variation throughout the year, ranging from 67°F to 86°F. The warmest month is August, when average highs reach 86°F and the mean temperature sits around 79°F. January is the coolest month, with minimum temperatures around 67°F and an average of 73°F. Daily temperature variation is modest, with an average difference of 12°F between highs and lows.

San José is a moderately rainy area, receiving approximately 897 mm of precipitation annually, which averages out to around 75 mm per month. The wettest month is October, averaging 172 mm of rainfall. August and September also tend to see above-average precipitation. The driest month is February, with just 15 mm. That's 157 mm less than October, 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 35.3 in of precipitation annually, which averages out to around 3 in per month. The wettest month is October, averaging 6.8 in of rainfall. August and September also tend to see above-average precipitation. The driest month is February, with just 0.6 in. That's 6.2 in less than October, 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 10km/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 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.San José is mildly breezy, with an average annual wind speed of 6mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is July, averaging 8mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in November, with average winds dropping to 5mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph gap between the calmest and windiest months.

The best time to visit San José is during January, February, March, April, May and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 43 mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 30°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, April, May and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 75°F with modest rainfall averaging 1.7 in per month. By contrast, August can be uncomfortably hot with temperatures reaching 86°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.