Will I be cold?
Will I be cold in Seoul in July?
Verdict
No — No, comfortable.
Lows stay near 72°F — you won't be reaching for the puffer.
Day vs. night
Day
84°F
Hot
Prioritize shade, hydration, and a brim.
Night
72°F
Comfortable
Comfortable outside without an extra layer.
Why
Seoul in July averages highs of 84°F, lows of 72°F, 16 rainy days.
You can pack for the daytime temps and not worry about the evening dip.