Pack or skip
Sunscreen for San Diego in August
Verdict
Pack it
Sun still finds you at 83°F — UV doesn't care about temperature.
Why
San Diego in August averages highs of 83°F, lows of 70°F, 0 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 83°F — UV doesn't care about temperature.