Any Floridian responds: LOL.
Every point in the state of Florida is both warmer, and wetter, than any point at all in the state of California.
That means that, yes, even northernmost Florida is warmer in January, and throughout the year, than San Diego. Rainfall in Florida rages between 48 and 64 inches, which exceeds everything in Calif. except some mountain slopes in the far northwest inhabited only by spotted owls and Bigfoot.