Climate Insights for San Jose
Santa Clara County, California, United States
Climate Overview
The climate in San Jose is temperate. The average annual temperature is 15°C and approximately 681 mm of precipitation falls per year. January is the wettest month, receiving around 151 mm of rainfall. San Jose is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, July. The coldest months are February, December, January, when temperatures can drop to 6°C.The climate in San Jose is temperate. The average annual temperature is 58°F and approximately 26.8 in of precipitation falls per year. January is the wettest month, receiving around 5.9 in of rainfall. San Jose is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, July. The coldest months are February, December, January, when temperatures can drop to 43°F.
Temperature
San Jose sees moderate temperature variation throughout the year, ranging from 6°C to 26°C. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 19°C. February is the coolest month, with minimum temperatures around 6°C and an average of 11°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.San Jose sees moderate temperature variation throughout the year, ranging from 43°F to 79°F. The warmest month is August, when average highs reach 79°F and the mean temperature sits around 67°F. February is the coolest month, with minimum temperatures around 43°F and an average of 51°F. On average, daily temperatures fluctuate by about 19°F between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 8°F shift in average temperatures.
Precipitation
San Jose is a relatively dry area, receiving approximately 681 mm of precipitation annually, which averages out to around 57 mm per month. The wettest month is January, averaging 151 mm of rainfall. March and February also tend to see above-average precipitation. The driest month is July, with just 0 mm. That's 150 mm less than January, 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 26.8 in of precipitation annually, which averages out to around 2.2 in per month. The wettest month is January, averaging 5.9 in of rainfall. March and February also tend to see above-average precipitation. The driest month is July, with just 0 in. That's 5.9 in less than January, 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.
Wind
San Jose is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 6km/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 Jose is relatively calm, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is February, averaging 5mph, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.
Best Time to Visit
The best time to visit San Jose is during June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 7 mm per month. By contrast, February can be quite cold with temperatures dropping to 6°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit San Jose is during June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 65°F with modest rainfall averaging 0.3 in per month. By contrast, February can be quite cold with temperatures dropping to 43°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.
Monthly Climate Data
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.