Climate Insights for Santa Rosa

The climate in Santa Rosa is hot. The average annual temperature is 26°C and approximately 1,977 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: April, May, September. The coldest months are January, February, March, when temperatures can drop to 23°C.The climate in Santa Rosa is hot. The average annual temperature is 79°F and approximately 77.8 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: April, May, September. The coldest months are January, February, March, when temperatures can drop to 73°F.

Santa Rosa has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is April, when average highs reach 31°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 23°C and an average of 25°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 15°F range. The warmest month is April, when average highs reach 88°F and the mean temperature sits around 81°F. January is the coolest month, with minimum temperatures around 73°F and an average of 77°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 1,977 mm of precipitation annually, which averages out to around 165 mm per month. The wettest month is October, averaging 322 mm of rainfall. June and September also tend to see above-average precipitation. The driest month is March, with just 34 mm. That's 288 mm less than October, 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 77.8 in of precipitation annually, which averages out to around 6.5 in per month. The wettest month is October, averaging 12.7 in of rainfall. June and September also tend to see above-average precipitation. The driest month is March, with just 1.3 in. That's 11.3 in less than October, 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 12km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 9km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 16km/h in winter, 13km/h in spring, 12km/h in summer, 10km/h in autumn.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 February, averaging 10mph, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in October, with average winds dropping to 5mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5mph gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 10mph in winter, 8mph in spring, 7mph in summer, 6mph in autumn.

The best time to visit Santa Rosa is during January, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 55 mm per month. By contrast, April can be uncomfortably hot with temperatures reaching 31°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, when the weather is most comfortable for travellers. During these months, average temperatures hover around 77°F with modest rainfall averaging 2.2 in per month. By contrast, April can be uncomfortably hot with temperatures reaching 88°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.