Climate Insights for Santa Rosa

The climate in Santa Rosa is hot. The average annual temperature is 26°C and approximately 1,704 mm of precipitation falls per year. Santa Rosa receives a notable amount of rainfall throughout the year, including during its driest month. Santa Rosa is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, September, June. The coldest months are January, December, February, when temperatures can drop to 21°C.The climate in Santa Rosa is hot. The average annual temperature is 78°F and approximately 67.1 in of precipitation falls per year. Santa Rosa receives a notable amount of rainfall throughout the year, including during its driest month. Santa Rosa is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, September, June. The coldest months are January, December, February, when temperatures can drop to 70°F.

Santa Rosa has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is May, when average highs reach 30°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 21°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows.Santa Rosa has relatively stable temperatures year-round, staying within a 17°F range. The warmest month is May, when average highs reach 87°F and the mean temperature sits around 81°F. January is the coolest month, with minimum temperatures around 70°F and an average of 74°F. Daily temperature variation is modest, with an average difference of 10°F between highs and lows.

Santa Rosa is a fairly wet location, receiving approximately 1,704 mm of precipitation annually, which averages out to around 142 mm per month. The wettest month is June, averaging 236 mm of rainfall. August and October also tend to see above-average precipitation. The driest month is April, with just 67 mm. That's 169 mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.Santa Rosa is a fairly wet location, receiving approximately 67.1 in of precipitation annually, which averages out to around 5.6 in per month. The wettest month is June, averaging 9.3 in of rainfall. August and October also tend to see above-average precipitation. The driest month is April, with just 2.6 in. That's 6.7 in less than June, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall.

Santa Rosa is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 7km/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 6mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is July, averaging 7mph, 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 3mph gap between the calmest and windiest months.

The best time to visit Santa Rosa is during January and February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 75 mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 30°C. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.The best time to visit Santa Rosa is during January and February, when the weather is most comfortable for travellers. During these months, average temperatures hover around 75°F with modest rainfall averaging 3 in per month. By contrast, May can be uncomfortably hot with temperatures reaching 87°F. Despite being the best months overall, some rain is still likely. Pack a waterproof layer and plan a mix of indoor and outdoor activities.

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.