Pack or skip
Sunscreen for San Diego in March
Verdict
Pack it
Sun still finds you at 68°F — UV doesn't care about temperature.
Why
San Diego in March averages highs of 68°F, lows of 54°F, 6 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 68°F — UV doesn't care about temperature.