Pack or skip
Sunscreen for San Diego in July
Verdict
Pack it
Sun still finds you at 82°F — UV doesn't care about temperature.
Why
San Diego in July averages highs of 82°F, lows of 68°F, 0 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 82°F — UV doesn't care about temperature.