Pack or skip
Sunscreen for Valletta in September
Verdict
Pack it
Sun still finds you at 84°F — UV doesn't care about temperature.
Why
Valletta in September averages highs of 84°F, lows of 74°F, 3 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 84°F — UV doesn't care about temperature.