Pack or skip
Insect repellent for Sydney in October
Verdict
Pack it
Warm (72°F) plus 11 rainy days = mosquito conditions.
Why
Sydney in October averages highs of 72°F, lows of 56°F, 11 rainy days.
That climate means insect repellent earns its space in the bag. Warm (72°F) plus 11 rainy days = mosquito conditions.