Weather in September 2025

San Francisco weather in September 2025

The temperatures in San Francisco in September are comfortable with low of 14°C and and high up to 25°C.

There is little to no rain in San Francisco 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 San Francisco in September 2025.

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

Temperatures
Temperatures
25° / 14°
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

San Francisco annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 15° / 7° 4 27 0 63 mm
Good
February 16° / 7° 4 24 0 61 mm
Good
March 17° / 8° 5 26 0 62 mm
Good
April 18° / 9° 2 28 0 22 mm
Good
May 20° / 10° 1 30 0 13 mm
Good
June 23° / 12° 0 30 0 6 mm
Perfect
July 25° / 14° 0 31 0 3 mm
Perfect
August 25° / 14° 0 31 0 3 mm
Perfect
September 25° / 14° 0 30 0 4 mm
Perfect
October 23° / 13° 1 30 0 26 mm
Perfect
November 18° / 10° 3 27 0 37 mm
Good
December 14° / 8° 4 27 0 55 mm
Good
Temperatures in San Francisco in September
Rain in San Francisco in September

Recommended Hotels in San Francisco

We know that finding the ideal hotel in San Francisco can be a hard task...

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

Weather in San Francisco in September - FAQ

What is the average temperature in San Francisco in September?
The average temperature in San Francisco in September is 14/25° C.
What is the chance of rain in San Francisco in September?
On average, there are 0 rainy days in San Francisco during September.
Weather wise, is September a good time to visit San Francisco?
The weather in San Francisco in September is perfect.
Can it snow in San Francisco in September?
On average, there are 0 snowy days in San Francisco in September.
More about the weather in San Francisco