Weather in San Francisco
What's the weather like in San Francisco?
San Francisco has a moderate climate and moderate rainfall spread across the year. Average daytime highs range from 14°C (57°F) in January to 22°C (72°F) in July, with overnight lows around 8°C (46°F) and 14°C (57°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit San Francisco are April through November.
Quick facts
- Country
- 🇺🇸 United States
- Region
- North America
- Time zone
- America/Los_Angeles
- Coordinates
- 37.775, -122.419
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 14°C / 57°F | 8°C / 46°F | 110 mm | 11 | — |
| February | 15°C / 59°F | 9°C / 48°F | 110 mm | 10 | — |
| March | 17°C / 63°F | 10°C / 50°F | 75 mm | 10 | — |
| April | 18°C / 64°F | 11°C / 52°F | 30 mm | 6 | — |
| May | 19°C / 66°F | 12°C / 54°F | 10 mm | 3 | — |
| June | 21°C / 70°F | 13°C / 55°F | 5 mm | 1 | — |
| July | 22°C / 72°F | 14°C / 57°F | 0 mm | 0 | — |
| August | 23°C / 73°F | 14°C / 57°F | 1 mm | 1 | — |
| September | 24°C / 75°F | 14°C / 57°F | 5 mm | 2 | — |
| October | 22°C / 72°F | 13°C / 55°F | 20 mm | 4 | — |
| November | 18°C / 64°F | 11°C / 52°F | 55 mm | 7 | — |
| December | 14°C / 57°F | 8°C / 46°F | 85 mm | 9 | — |
San Francisco by month
Detailed weather for any specific month:
Seasonal patterns to know
Atlantic hurricane season runs June–November (peak August–October). Tropical storms and hurricanes are possible — peak risk is August–October.
Cities with a similar climate to San Francisco
Frequently asked questions
When is the best time to visit San Francisco?
The most comfortable months in San Francisco are usually June, July, August, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in San Francisco?
September is typically the hottest month in San Francisco, averaging a high of 24°C (75°F).
What is the coldest month in San Francisco?
January is usually the coldest, with average lows around 8°C (46°F).
Does it snow in San Francisco?
Snow is rare in San Francisco; the climate data shows essentially no snowfall across the year.
Live forecast, sunrise/sunset, and more.