Climate Insights for San Jose

The climate in San Jose is warm and mild. The average annual temperature is 22°C and approximately 431 mm of precipitation falls per year. March is the wettest month, receiving around 74 mm of rainfall. San Jose 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 7°C.The climate in San Jose is warm and mild. The average annual temperature is 72°F and approximately 17 in of precipitation falls per year. March is the wettest month, receiving around 2.9 in of rainfall. San Jose 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 45°F.

Temperatures in San Jose vary considerably across the year, with a 29°C difference between the coldest and warmest months. January is the hottest month, with daytime highs reaching 36°C and an average of 30°C. July is the coolest month, with minimum temperatures around 7°C and an average of 14°C. On average, daily temperatures fluctuate by about 13°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 5°C shift in average temperatures.Temperatures in San Jose vary considerably across the year, with a 53°F difference between the coldest and warmest months. January is the hottest month, with daytime highs reaching 98°F and an average of 86°F. July is the coolest month, with minimum temperatures around 45°F and an average of 56°F. On average, daily temperatures fluctuate by about 23°F between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 8°F shift in average temperatures.

San Jose is a relatively dry area, receiving approximately 431 mm of precipitation annually, which averages out to around 36 mm per month. The wettest month is March, averaging 74 mm of rainfall. January and December also tend to see above-average precipitation. The driest month is August, with just 5 mm. That's 69 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 Jose is a relatively dry area, receiving approximately 17 in of precipitation annually, which averages out to around 1.4 in per month. The wettest month is March, averaging 2.9 in of rainfall. January and December also tend to see above-average precipitation. The driest month is August, with just 0.2 in. That's 2.7 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 Jose is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 20km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 8km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 13km/h in winter, 19km/h in spring, 17km/h in summer, 14km/h in autumn.San Jose is moderately windy, with an average annual wind speed of 10mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is November, averaging 12mph, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in June, with average winds dropping to 7mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5mph gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 8mph in winter, 12mph in spring, 11mph in summer, 9mph in autumn.

The best time to visit San Jose is during April, May, 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 21 mm per month. By contrast, January can be uncomfortably hot with highs reaching 36°C, while July is the coldest period with lows dropping to 7°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit San Jose is during April, May, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 68°F with modest rainfall averaging 0.8 in per month. By contrast, January can be uncomfortably hot with highs reaching 98°F, while July is the coldest period with lows dropping to 45°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for San Jose 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 Jose 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.