Pack or skip
Sunscreen for Valletta in December
Verdict
Pack it
Sun still finds you at 64°F — UV doesn't care about temperature.
Why
Valletta in December averages highs of 64°F, lows of 57°F, 3 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 64°F — UV doesn't care about temperature.