Climate Insights for San José

The climate in San José is warm and mild. The average annual temperature is 23°C and approximately 845 mm of precipitation falls per year. November is the wettest month, receiving around 110 mm of rainfall. San José is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, June, August, when temperatures can drop to 11°C.The climate in San José is warm and mild. The average annual temperature is 73°F and approximately 33.3 in of precipitation falls per year. November is the wettest month, receiving around 4.3 in of rainfall. San José is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, June, August, when temperatures can drop to 52°F.

Temperatures in San José vary considerably across the year, with a 24°C difference between the coldest and warmest months. January is the hottest month, with daytime highs reaching 35°C and an average of 29°C. July is the coolest month, with minimum temperatures around 11°C and an average of 16°C. On average, daily temperatures fluctuate by about 12°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.Temperatures in San José vary considerably across the year, with a 44°F difference between the coldest and warmest months. January is the hottest month, with daytime highs reaching 96°F and an average of 84°F. July is the coolest month, with minimum temperatures around 52°F and an average of 61°F. On average, daily temperatures fluctuate by about 21°F between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 7°F shift in average temperatures.

San José is a moderately rainy area, receiving approximately 845 mm of precipitation annually, which averages out to around 70 mm per month. The wettest month is November, averaging 110 mm of rainfall. February and December also tend to see above-average precipitation. The driest month is July, with just 20 mm. That's 90 mm less than November, 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 33.3 in of precipitation annually, which averages out to around 2.8 in per month. The wettest month is November, averaging 4.3 in of rainfall. February and December also tend to see above-average precipitation. The driest month is July, with just 0.8 in. That's 3.5 in less than November, 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 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is October, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, 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 2km/h between the calmest and windiest months.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 October, averaging 8mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in February, 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.

The best time to visit San José is during April, May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 49 mm per month. By contrast, January can be uncomfortably hot with temperatures reaching 35°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 April, May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 67°F with modest rainfall averaging 1.9 in per month. By contrast, January can be uncomfortably hot with temperatures reaching 96°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.