Will I be hot?
Will I be hot in Busan in August?
Verdict
Yes — Yes, hot.
Highs push 84°F — sun exposure and hydration matter more than layering.
Day vs. night
Day
84°F
Hot
Prioritize shade, hydration, and a brim.
Night
73°F
Warm
Still warm enough for a T-shirt after dark.
Why
Busan in August averages highs of 84°F, lows of 73°F, 13 rainy days.
Prioritize breathable fabrics, sun protection, and hydration over any kind of layering piece.