Will I be cold?
Will I be cold in Seoul in February?
Verdict
Yes — Yes, cold.
Lows drop to 25°F on average — noticeably cold, especially after sundown.
Day vs. night
Day
41°F
Cold
Direct sun feels cool at best; shade is jacket weather.
Night
25°F
Freezing
Deep freeze after sunset — every exposed step counts.
Why
Seoul in February averages highs of 41°F, lows of 25°F, 5 rainy days.
Plan for real winter kit — an insulated coat, warm hat, and gloves rather than a light jacket.