Pack or skip
Sunscreen for Lisbon in May
Verdict
Pack it
Sun still finds you at 72°F — UV doesn't care about temperature.
Why
Lisbon in May averages highs of 72°F, lows of 56°F, 6 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 72°F — UV doesn't care about temperature.