Weather By Day

September Weather In San Diego  
September San Diego Weather
Record High: 111°F
Normal High: 77°F
Normal Low: 66°F
Record Low: 38°F
Avg Monthly Rain: 0.21"
Rec 1 Day Rain: 1.23"

San Diego Weather In September

San Diego Weather in September is slightly wetter than the heart of the summer, which only means the chance of rain is higher than near zero. It's still dry, warm (but not hot), and sunny for the huge majority of the month. And now Legoland, the San Diego Zoo, Sea World and the other attractions are easier to get around in with most of the kids back in school, so come enjoy the September San Diego Weather.