Weather in September 2025

Santa Rosa weather in September 2025

The temperatures in Santa Rosa in September are comfortable with low of 13°C and and high up to 29°C.

There is little to no rain in Santa Rosa during September, so it’s a lot easier to explore the city. Just remember to dress in warm layers, as it can still get pretty chilly.

Our weather forecast can give you a great sense of what weather to expect in Santa Rosa in September 2025.

If you’re planning to visit Santa Rosa in the near future, we highly recommend that you review the 14 day weather forecast for Santa Rosa before you arrive.

Temperatures
Temperatures
29° / 13°
Rainy Days
Rainy Days
0
Snowy Days
Snowy Days
0
Dry Days
Dry Days
30
Rainfall
Rainfall
4
mm
11.9
Sun Hours
11.9
Hrs

Santa Rosa annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 14° / 5° 5 26 0 152 mm
Good
February 15° / 5° 5 23 0 155 mm
Good
March 17° / 6° 7 24 0 133 mm
Ok
April 20° / 7° 3 27 0 44 mm
Good
May 23° / 9° 2 29 0 27 mm
Perfect
June 27° / 12° 1 29 0 9 mm
Perfect
July 29° / 12° 0 31 0 2 mm
Good
August 29° / 13° 0 31 0 2 mm
Good
September 29° / 13° 0 30 0 4 mm
Good
October 24° / 11° 3 28 0 55 mm
Perfect
November 18° / 8° 3 27 0 72 mm
Good
December 13° / 5° 6 25 0 119 mm
Ok
Temperatures in Santa Rosa in September
Rain in Santa Rosa in September

Recommended Hotels in Santa Rosa

We know that finding the ideal hotel in Santa Rosa can be a hard task...

That’s why we run our special tools and found the best hotels in Santa Rosa. Click on hotel for more details.

Weather in Santa Rosa in September - FAQ

What is the average temperature in Santa Rosa in September?
The average temperature in Santa Rosa in September is 13/29° C.
What is the chance of rain in Santa Rosa in September?
On average, there are 0 rainy days in Santa Rosa during September.
Weather wise, is September a good time to visit Santa Rosa?
The weather in Santa Rosa in September is good.
Can it snow in Santa Rosa in September?
On average, there are 0 snowy days in Santa Rosa in September.
More about the weather in Santa Rosa