Climate Insights for Santa Rosa

The climate in Santa Rosa is warm and mild. The average annual temperature is 20°C and approximately 202 mm of precipitation falls per year. August is the wettest month, receiving around 51 mm of rainfall. Santa Rosa is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, July, August. The coldest months are January, December, February, when temperatures can drop to 3°C.The climate in Santa Rosa is warm and mild. The average annual temperature is 68°F and approximately 7.9 in of precipitation falls per year. August is the wettest month, receiving around 2 in of rainfall. Santa Rosa is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: June, July, August. The coldest months are January, December, February, when temperatures can drop to 37°F.

Temperatures in Santa Rosa vary considerably across the year, with a 33°C difference between the coldest and warmest months. June is the hottest month, with daytime highs reaching 36°C and an average of 29°C. January is the coolest month, with minimum temperatures around 3°C and an average of 9°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 6°C shift in average temperatures.Temperatures in Santa Rosa vary considerably across the year, with a 59°F difference between the coldest and warmest months. June is the hottest month, with daytime highs reaching 96°F and an average of 85°F. January is the coolest month, with minimum temperatures around 37°F and an average of 49°F. On average, daily temperatures fluctuate by about 25°F between overnight lows and afternoon highs. The sharpest temperature change occurs between October and November, with a 11°F shift in average temperatures.

Santa Rosa is a quite dry location, receiving approximately 202 mm of precipitation annually, which averages out to around 17 mm per month. The wettest month is August, averaging 51 mm of rainfall. September and July also tend to see above-average precipitation. The driest month is March, with just 6 mm. That's 45 mm less than August, 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.Santa Rosa is a quite dry location, receiving approximately 7.9 in of precipitation annually, which averages out to around 0.7 in per month. The wettest month is August, averaging 2 in of rainfall. September and July also tend to see above-average precipitation. The driest month is March, with just 0.2 in. That's 1.8 in less than August, 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.

Santa Rosa is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.Santa Rosa is moderately windy, with an average annual wind speed of 8mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is March, averaging 9mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in December, with average winds dropping to 7mph, 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 Santa Rosa is during March, April, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 16 mm per month. By contrast, June can be uncomfortably hot with highs reaching 36°C, while January is the coldest period with lows dropping to 3°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit Santa Rosa is during March, April, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 69°F with modest rainfall averaging 0.6 in per month. By contrast, June can be uncomfortably hot with highs reaching 96°F, while January is the coldest period with lows dropping to 37°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Santa Rosa 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 Santa Rosa 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.