✨September is an excellent time to visit San Francisco — expect pleasantly warm days around 70°F (lows near 58°F), very little rain, abundant sunshine.
September Climate
Why This Matches
Based on your September search preferences
Avg highs of 70°F
1 rain days expected
10.9 hours of sunshine per day
77% average humidity
Year-Round Climate
Temperature
Sunshine
Rainfall
Best Time to Visit San Francisco
The best time to visit San Francisco is April–October, with highs around 67°F, minimal rainfall, 13+ hours of daily sunshine.
What to Pack
Based on September conditions in San Francisco
Light layers — t-shirts with a light jacket for evenings
High SPF sunscreen, sunglasses, and a hat — strong sun expected
Comfortable walking shoes — you'll cover a lot of ground
September in San Francisco
Flight prices unavailable for this route
Nightly hotel rates
Budget
$78–$143
Mid-Range
$208–$364
Luxury
$455–$975
Discover Events in San Francisco
About San Francisco
San Francisco packs enormous variety onto a compact, hilly peninsula. The Golden Gate Bridge is the icon, often draped in dramatic fog, while historic cable cars still clank up impossibly steep streets and the former island prison of Alcatraz sits out in the bay. Bohemian, beautiful, and endlessly walkable, the city rewards curiosity around every corner.
The pleasure is in the neighborhoods, each a world of its own. The Mission brings murals, taquerías, and sunshine, Chinatown and North Beach sit side by side with dim sum and Italian espresso, and the Haight still trades on its 1960s counterculture roots. Add a world-class food scene and the tech energy of a city that keeps reinventing itself, and there is far more than a first visit can hold.
San Francisco's weather defies expectations, with cool temperatures year-round and that famous summer fog rolling in off the Pacific. The warmest, clearest months tend to be September and October, and layers are essential whatever the season.
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