What’s the climate like in Santa Rosa?
The current climate of Santa Rosa features average monthly temperatures ranging from highs of 29°C during the day to lows of 15°C. The average yearly temperature is around 23°C. At night, temperatures in the colder months average around 4°C and in the warmer months around 13°C.
The highest temperature recorded in Santa Rosa in recent years was 45°C in September 2022. The lowest daytime temperature recorded was 6°C in December 2021.
On average, Santa Rosa receives 857 mm of precipitation each year. For comparison, London gets 701 mm of precipitation annually.
Best time to visit Santa Rosa?
The best time to visit Santa Rosa for sunny weather is March through November. During this period, you'll have good temperatures and not too much rain, making it a great time to visit Santa Rosa. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of Santa Rosa
The climate table of Santa Rosa shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 16 | 18 | 18 | 21 | 24 | 28 | 28 | 29 | 29 | 26 | 19 | 15 |
| Temp. min (°C) | 5 | 5 | 6 | 8 | 10 | 11 | 12 | 13 | 12 | 9 | 5 | 5 |
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| Precipitation (mm) | 138 | 241 | 105 | 64 | 22 | 4,2 | 0,3 | 0,9 | 8,2 | 52 | 62 | 159 |
| UV Index | 4 | 6 | 7 | 8 | 9 | 9 | 9 | 9 | 8 | 6 | 4 | 4 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 23°C
- Highest temperature: 29°C in August and September
- Lowest temperature: 15°C in December
- Precipitation: 857 mm per year, averaging 71 mm per month
- Driest months: 0,3 mm in July, 0,9 mm in August and 4,2 mm in June
- Wettest months: 241 mm in February, 159 mm in December and 138 mm in January
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Table of Contents
Average Temperature per Month in Santa Rosa
This graph shows the average maximum temperatures per month in Santa Rosa, California. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Santa Rosa
This graph shows how much precipitation Santa Rosa, California, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in Santa Rosa
This graph shows the average UV index per month in Santa Rosa, California. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Santa Rosa
This graph shows the average yearly temperature in Santa Rosa, California. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Santa Rosa
This chart shows the total yearly precipitation in Santa Rosa, California, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences in Santa Rosa
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Average Weather in Santa Rosa by Month
Click on a month below to see detailed weather info for Santa Rosa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
