‹ San Francisco weather by month
Typical January weather
San Francisco
California · January
58° days
47° nights
about 8 rainy days · 10 hours of daylight · ocean 54°
What to pack
- Sweater
- Umbrella
What January feels like
January delivers the storms in runs, and the wind off the Embarcadero destroys umbrellas faster than the rain soaks you. Between systems come the crisp, wildly clear days that put Mount Diablo on the horizon from Twin Peaks.
Rain arrives about 8 days of the month, so keep one flexible day in your plans.
Can you swim?
The ocean runs about 54° — frigid — locals in wetsuits only.
The numbers
| Typical high | 58° |
|---|---|
| Typical low | 47° |
| Days with real rain | 8 |
| Total rain | 4.4 in |
| Water temperature | 54° |
| Sunrise / sunset (mid-month) | 7:23 am / 5:14 pm |