Pack or skip
Sunscreen for Zurich in September
Verdict
Pack it
Sun still finds you at 67°F — UV doesn't care about temperature.
Why
Zurich in September averages highs of 67°F, lows of 50°F, 9 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.