Pack or skip
Insect repellent for Mumbai in September
Verdict
Pack it
Warm (87°F) plus 16 rainy days = mosquito conditions.
Why
Mumbai in September averages highs of 87°F, lows of 76°F, 16 rainy days.
That climate means insect repellent earns its space in the bag. Warm (87°F) plus 16 rainy days = mosquito conditions.