Brace for a Frozen Christmas: Seoul Plummets to Around -20°C Wind Chill
A powerful cold wave will sharply lower temperatures in South Korea this holiday period, with Seoul dipping well below freezing on Christmas Day and hitting the coldest point on Friday when strong winds make it feel like about -20°C (-4°F).
What to expect
Temperatures in Seoul will remain below freezing on Christmas Day, with morning lows near -4°C (25°F) and strong northwesterly winds that will make it feel much colder.
Friday will be the coldest day of the week: actual temperatures are forecast around -12°C (10°F) in Seoul while wind chill will push the feels-like temperature to roughly -20°C (-4°F).
Snow and regional impacts
- Heavy snow is expected along the west coast and on Jeju Island, with some locations (such as Ulleungdo) potentially seeing significant accumulations.
- Wind gusts of up to about 15–20 m/s in coastal and southern areas will increase the biting cold and may disrupt travel.
- Icy roads are likely after rain changes to freezing conditions, raising the risk of accidents and transport delays.
Practical safety tips
- Dress in layers: long paddings, hats, gloves, and heat packs are recommended.
- Limit outdoor time when winds are strongest to reduce cold exposure.
- Check travel plans: flights and ferries may be delayed or canceled because of strong winds and snow; allow extra time and monitor updates.
Why this is happening
Cold northwesterly air moving over the relatively warmer Yellow Sea will generate snow clouds for western coastal areas, while a mass of very cold air from the northwest will cause a sharp temperature drop and enhanced overnight cooling.
