Pack or skip
Sunscreen for San Francisco in June
Verdict
Pack it
Sun still finds you at 67°F — UV doesn't care about temperature.
Why
San Francisco in June averages highs of 67°F, lows of 54°F, 2 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 67°F — UV doesn't care about temperature.