Pack or skip
Winter coat for Seoul in December
Verdict
Pack it
Average lows dip to 24°F — a real winter coat, not a jacket.
Why
Seoul in December averages highs of 38°F, lows of 24°F, 5 rainy days.
That climate means a winter coat earns its space in the bag. Average lows dip to 24°F — a real winter coat, not a jacket.