Climate Insights for Santa Rosa

The climate in Santa Rosa is warm and mild. The average annual temperature is 22°C and approximately 91 mm of precipitation falls per year. September is the wettest month, receiving around 42 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: August, September, July. The coldest months are January, February, March, when temperatures can drop to 13°C.The climate in Santa Rosa is warm and mild. The average annual temperature is 71°F and approximately 3.6 in of precipitation falls per year. September is the wettest month, receiving around 1.6 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: August, September, July. The coldest months are January, February, March, when temperatures can drop to 55°F.

Santa Rosa sees moderate temperature variation throughout the year, ranging from 13°C to 32°C. The warmest month is August, when average highs reach 32°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 13°C and an average of 18°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between June and July, with a 4°C shift in average temperatures.Santa Rosa sees moderate temperature variation throughout the year, ranging from 55°F to 90°F. The warmest month is August, when average highs reach 90°F and the mean temperature sits around 82°F. January is the coolest month, with minimum temperatures around 55°F and an average of 64°F. On average, daily temperatures fluctuate by about 17°F between overnight lows and afternoon highs. The sharpest temperature change occurs between June and July, with a 6°F shift in average temperatures.

Santa Rosa is a quite dry location, receiving approximately 91 mm of precipitation annually, which averages out to around 8 mm per month. The wettest month is September, averaging 42 mm of rainfall. October and August also tend to see above-average precipitation. The driest month is May, with just 0 mm. That's 42 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 3.6 in of precipitation annually, which averages out to around 0.3 in per month. The wettest month is September, averaging 1.7 in of rainfall. October and August also tend to see above-average precipitation. The driest month is May, with just 0 in. That's 1.7 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 mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is May, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 12km/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 May, averaging 10mph, 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 3mph between the calmest and windiest months.

The best time to visit Santa Rosa is during January, February, March, April, May, June, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 4 mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 32°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit Santa Rosa is during January, February, March, April, May, June, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 68°F with modest rainfall averaging 0.2 in per month. By contrast, August can be uncomfortably hot with temperatures reaching 90°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.