San Francisco Weather Year-Round — Best Time to Visit
San Francisco, United States has mild weather year-round. The best time to visit is September (score: 90/100). Annual average high: 17.8°C, total rainfall: 499mm.
When is the best time to visit San Francisco?
90
September is the best month to visit San Francisco with a travel score of 90/100 (Excellent).
Expect highs of 22°C, 1 rain days, and 11.7 hours of daily sunshine.
View September weather details →Travel Score by Month
61
Jan
66
Feb
71
Mar
77
Apr
82
May
87
Jun
88
Jul
89
Aug
90
Sep
86
Oct
73
Nov
61
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in San Francisco each month?
17.8°C
Avg High
10.1°C
Avg Low
499mm
Annual Rain
How much rain does San Francisco get?
San Francisco receives 499mm of rain annually. The wettest month is typically December with 101mm, while July is the driest.
What is the weather like each month in San Francisco?
January
61
14°C
Low: 7°C
9 rain days
Good
February
66
14°C
Low: 7°C
8 rain days
Good
March
71
16°C
Low: 8°C
8 rain days
Good
April
77
17°C
Low: 9°C
5 rain days
Good
May
82
18°C
Low: 11°C
3 rain days
Excellent
June
87
20°C
Low: 12°C
1 rain days
Excellent
July
88
21°C
Low: 13°C
0 rain days
Excellent
August
89
21°C
Low: 14°C
0 rain days
Excellent
September
Best time to visit90
22°C
Low: 13°C
1 rain days
Excellent
October
86
21°C
Low: 12°C
3 rain days
Excellent
November
73
16°C
Low: 9°C
6 rain days
Good
December
61
14°C
Low: 7°C
10 rain days
Good
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Data based on 1994–2024 averages · Last updated: 2024-12-31