Climate Insights for Santa Rosa

The climate in Santa Rosa is warm and mild. The average annual temperature is 19°C and approximately 378 mm of precipitation falls per year. September is the wettest month, receiving around 101 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, May, July. 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 66°F and approximately 14.9 in of precipitation falls per year. September is the wettest month, receiving around 4 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, May, July. 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 30°C difference between the coldest and warmest months. The warmest month is June, when average highs reach 33°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 3°C and an average of 11°C. The average daily temperature swing is 17°C, meaning significant differences between daytime and nighttime temperatures. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.Temperatures in Santa Rosa vary considerably across the year, with a 54°F difference between the coldest and warmest months. The warmest month is June, when average highs reach 91°F and the mean temperature sits around 78°F. January is the coolest month, with minimum temperatures around 37°F and an average of 52°F. The average daily temperature swing is 30°F, meaning significant differences between daytime and nighttime temperatures. The sharpest temperature change occurs between October and November, with a 7°F shift in average temperatures.

Santa Rosa is a quite dry location, receiving approximately 378 mm of precipitation annually, which averages out to around 32 mm per month. The wettest month is September, averaging 101 mm of rainfall. July and August also tend to see above-average precipitation. The driest month is January, with just 4 mm. That's 96 mm less than September, 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 14.9 in of precipitation annually, which averages out to around 1.3 in per month. The wettest month is September, averaging 4 in of rainfall. July and August also tend to see above-average precipitation. The driest month is January, with just 0.2 in. That's 3.8 in less than September, 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 relatively calm, with an average annual wind speed of 8km/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 10km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 6km/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.Santa Rosa is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is March, averaging 6mph, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2mph gap between the calmest and windiest months.

The best time to visit Santa Rosa is during March, April, May, July, August, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 32 mm per month. By contrast, June can be uncomfortably hot with highs reaching 33°C, while January is the coldest period with lows dropping to 3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Santa Rosa is during March, April, May, July, August, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 68°F with modest rainfall averaging 1.3 in per month. By contrast, June can be uncomfortably hot with highs reaching 91°F, while January is the coldest period with lows dropping to 37°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 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.