Typical January weather
San Diego
California · January
66° days
50° nights
about 4 rainy days · 10 hours of daylight · ocean 58°
What to pack
- Light jacket
What January feels like
January sits in the heart of San Diego's short rainy season, and it brings the clearest air of the year in between storms — from Point Loma you can pick out Mexico. Gray whales are moving south past Cabrillo all month.
Expect about 4 days with real rain — enough to notice, not enough to plan around. The air runs dry — whatever the thermometer says, it wears easy.
Can you swim?
The ocean runs about 58° — cold — a quick dip takes resolve.
The numbers
| Typical high | 66° |
|---|---|
| Typical low | 50° |
| Days with real rain | 4 |
| Total rain | 2.0 in |
| Humidity | dry air |
| Water temperature | 58° |
| Sunrise / sunset (mid-month) | 6:50 am / 5:05 pm |