Climate Insights for Santa Rosa

The climate in Santa Rosa is warm and mild. The average annual temperature is 23°C and approximately 1,562 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, April, June. The coldest months are January, February, December, when temperatures can drop to 17°C.The climate in Santa Rosa is warm and mild. The average annual temperature is 74°F and approximately 61.5 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, April, June. The coldest months are January, February, December, when temperatures can drop to 62°F.

Santa Rosa sees moderate temperature variation throughout the year, ranging from 17°C to 32°C. The warmest month is May, when average highs reach 32°C and the mean temperature sits around 26°C. January is the coolest month, with minimum temperatures around 17°C and an average of 20°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.Santa Rosa sees moderate temperature variation throughout the year, ranging from 62°F to 90°F. The warmest month is May, when average highs reach 90°F and the mean temperature sits around 79°F. January is the coolest month, with minimum temperatures around 62°F and an average of 69°F. On average, daily temperatures fluctuate by about 16°F between overnight lows and afternoon highs.

Santa Rosa is a fairly wet location, receiving approximately 1,562 mm of precipitation annually, which averages out to around 130 mm per month. The wettest month is September, averaging 227 mm of rainfall. June and October also tend to see above-average precipitation. The driest month is April, with just 44 mm. That's 183 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 fairly wet location, receiving approximately 61.5 in of precipitation annually, which averages out to around 5.1 in per month. The wettest month is September, averaging 8.9 in of rainfall. June and October also tend to see above-average precipitation. The driest month is April, with just 1.7 in. That's 7.2 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 5km/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 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.Santa Rosa is relatively calm, with an average annual wind speed of 3mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is March, averaging 3mph, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 2mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1mph gap between the calmest and windiest months.

The best time to visit Santa Rosa is during January, February and March, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 58 mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 32°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 January, February and March, when the weather is most comfortable for travellers. During these months, average temperatures hover around 71°F with modest rainfall averaging 2.3 in per month. By contrast, May can be uncomfortably hot with temperatures reaching 90°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.