Pack or skip
Flip-flops for Busan in August
Verdict
Optional
Warm enough to wear in the evening or on the beach; not on a city walking day.
Why
Busan in August averages highs of 84°F, lows of 73°F, 13 rainy days.
That climate makes flip-flops a judgment call. Warm enough to wear in the evening or on the beach; not on a city walking day.