Pack or skip
Insect repellent for Busan in May
Verdict
Pack it
Warm (69°F) plus 9 rainy days = mosquito conditions.
Why
Busan in May averages highs of 69°F, lows of 55°F, 9 rainy days.
That climate means insect repellent earns its space in the bag. Warm (69°F) plus 9 rainy days = mosquito conditions.