Weather By Day

August Weather In San Diego  
August San Diego Weather
Record High: 98°F
Normal High: 78°F
Normal Low: 67°F
Record Low: 57°F
Avg Monthly Rain: 0.09"
Rec 1 Day Rain: 1.44"

San Diego Weather In August

San Diego Weather In August is always comfortably warm, and almost always dry. Yes, the chance of rain towards the end of the month is higher than it was in June and July, but San Diego still averages less than 3 inches of rain in August. August San Diego Weather is the warmest weather of the year, just barely warmer than July and September.