San Diego Weather In January

San Diego Weather In January can be wet, but if it does rain it probably will come in the morning and won't last very long. San Diego averages 7 days of precipitation in January. Usually the temperature in January is mild and extremely comfortable, but it is possible for the weather to become a little chilly. The all time low of 25 occurred on January 7, 1913.

You will almost always want to wear a jacket in the evening, but most of the time the daytimes are very pleasant. Unless you love snow and cold January Weather in San Diego is almost always very comfortable. Swimming is iffy at best, but just about anything else will be possible to do in San Diego in January.