Pack or skip
Sunscreen for San Antonio in May
Verdict
Pack it
Sun still finds you at 87°F — UV doesn't care about temperature.
Why
San Antonio in May averages highs of 87°F, lows of 67°F, 9 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 87°F — UV doesn't care about temperature.