Pack or skip
Insect repellent for Berlin in September
Verdict
Pack it
Warm (67°F) plus 8 rainy days = mosquito conditions.
Why
Berlin in September averages highs of 67°F, lows of 52°F, 8 rainy days.
That climate means insect repellent earns its space in the bag. Warm (67°F) plus 8 rainy days = mosquito conditions.