Weather By Day

January San Diego Weather 
January San Diego Weather
Record High: 88°F
Normal High: 66°F
Normal Low: 50°F
Record Low: 29°F
Avg Monthly Rain: 2.28"
Rec 1 Day Rain: 2.57"

San Diego Weather In January

San Diego Weather In January can be rainy, but if it does rain it probably will come in the morning and won't last very long. As always , the temperature in January is mild and extremely comfortable. Yes, you'll want a jacket in the evening, but it's almost always pleasant to be outdoors in San Diego, and January is no different. Unless you love snow and cold San Diego in January is very comfortable.