San Francisco month by month
Plan your visit to San Francisco by month. Compare weather, crowds, events, and prices across all twelve months with historical climate data.
- January
- High
- 14°C
- Low
- 8°C
- Rain
- 104 mm
January is San Francisco's rainy season, and there's no sugarcoating it. The city receives about 104mm of rainfall across roughly 8 days, temperatures sit between 7.7°C (46°F) at…
- February
- High
- 14°C
- Low
- 8°C
- Rain
- 89 mm
February in San Francisco means rain, lower hotel prices, and the largest Chinese New Year celebration outside of Asia. Expect daytime highs around 14.4°C (58°F) and lows near…
- March
- High
- 14°C
- Low
- 9°C
- Rain
- 104 mm
March in San Francisco still belongs to the rainy season, and that's the single most important thing to know before booking. The city averages 104mm of rainfall across roughly 11…
- April
- High
- 16°C
- Low
- 10°C
- Rain
- 22 mm
April is when San Francisco finally shakes off the winter rain. After months of wet weather, with January through March each bringing 89-104mm of precipitation, April drops to…
- May
- High
- 17°C
- Low
- 11°C
- Rain
- 12 mm
May in San Francisco sits in a sweet spot between the rainy winter and the fog-heavy summer. The rain has largely stopped, with only about 12mm falling across the whole month, but…
- June
- High
- 18°C
- Low
- 12°C
- Rain
- 2 mm
June in San Francisco comes with a warning label that catches first-timers off guard. The city's famous fog, locally nicknamed Karl, rolls through the Golden Gate in thick banks…
- July
- High
- 18°C
- Low
- 13°C
- Rain
- 0 mm
The single most important thing to know about San Francisco in July is that it will likely be colder than you expect. Daytime highs average 18°C (65°F), and the famous Pacific fog,…
- August
- High
- 20°C
- Low
- 14°C
- Rain
- 1 mm
The single most important thing to know about August in San Francisco is that it might be the coldest month you experience all summer. While the rest of California bakes above 35°C…
- September
- High
- 20°C
- Low
- 14°C
- Rain
- 5 mm
September is, by most accounts, the best weather month San Francisco will give you all year. That fact surprises first-timers who packed for fog and find themselves sweating in the…
- October
- High
- 20°C
- Low
- 13°C
- Rain
- 43 mm
October is San Francisco's real summer, and that single fact upends everything most visitors expect. While the rest of North America pulls out sweaters, San Francisco finally sheds…
- November
- High
- 16°C
- Low
- 10°C
- Rain
- 78 mm
November in San Francisco is the month the fog finally retreats and the rain arrives to take its place. After October's warm "Indian Summer" days, which often push past 21°C…
- December
- High
- 13°C
- Low
- 8°C
- Rain
- 191 mm
December in San Francisco is the wettest month of the year. The city averages 191mm of rain across roughly 13 days, with daytime highs near 13°C (56°F) and overnight lows around…