What to Wear in Seoul in December
Seoul in December: 4°C / 39°F afternoons, −4°C / 25°F nights, frost on about 25 nights and only about 6 wet days.
- Black knee-length padded coat with a hood — frost on about 25 of 31 nights
- Heather grey chunky turtleneck — one warm layer that comes off in a heated café
- Black wide-leg trousers — room for a thermal underneath at −4°C / 25°F
- Black lined lace-up boots — cleated soles for frozen pavement on frost mornings
- Black lined leather gloves — you stand still at the market stalls and the rink rail
- Cranberry ribbed beanie — ears go first, and one colour is the Seoul way
- November's wool coat on its own — nights average −4.2°C and the markets run after dark
- A rain shell — about 27mm of rain or snow in the whole month
- Cropped trousers with short socks — a bare ankle in −4°C / 25°F air
- Afternoon-only plans — sunset comes before 5:20pm
Pack for dry cold. NOAA's daily record for the Korea Meteorological Administration's Seoul station puts December at 4.0°C by day and −4.2°C at night, with frost on about 25 nights but only about 27mm of rain or snow over some 6 days. So warmth matters and waterproofing barely does. The month keeps sliding: afternoons average 5.6°C in the first ten days and 3.0°C in the last, and the sun sets before 5:20pm. The evenings are still spent outside. In 2025 the city's Winter Festa ran from 12 December to 4 January, with a Christmas market on Gwanghwamun Square and a skating rink on Seoul Plaza. Build on a long padded coat, the one Seoul itself wears, and keep the layers under it easy to pull off in a heated café.
Seoul's December is not wet. It is cold and dry, and the city answers it with one garment: a padded coat long enough to sit down in.
The capsule
01Black knee-length down coat with a hoodBuy the length. A knee-length down coat keeps your thighs out of a −4.2°C night on Gwanghwamun Square, where a waist-length puffer leaves them to it, and the hood covers what the beanie misses when the wind comes across the square. Black because it is what the Seoul street wears, and a month of subway seats does not show on it.
02Heather grey chunky rib turtleneckOne thick layer instead of three thin ones, because every café, subway car and department store in Seoul is heated and you will pull it off minutes after walking in. A chunky ribbed turtleneck closes the neck under the coat, so the scarf can come off first, and heather grey keeps a black coat from reading flat.
03Black wide-leg trousersWide enough to take a thermal legging underneath without a visible line, which is how a −4°C / 25°F night stops being a problem. Black matches the coat for the long, unbroken line the Seoul street prefers, and the fullness moves when you walk, so the outfit does not read as a sleeping bag.
04Black leather lace-up winter boots, lined, cleated soleFrost on about 25 nights means frozen pavement most mornings, and a deeply cleated rubber sole grips where a leather derby slides. The felt lining keeps your feet warm through an hour at the market stalls, and black leather polishes up for dinner in Cheongdam-dong.
05Black lined leather gloves, knit cuffYou stand still in December: at the market stalls, at the rink rail on Seoul Plaza, at the lantern displays along Cheonggyecheon. Lined leather keeps your hands warm and still lets you tap a T-money card at the gate, and the knit cuff tucks under the coat sleeve so no wrist shows.
06Cranberry ribbed wool beanieEars go first at −4°C, and the coat's hood stays down while you walk. A chunky cranberry rib is also the single colour in the capsule: Seoul breaks its black and grey with one accent, never a pattern, and this month the accent sits on your head.
07Navy marled wool scarfWound once inside the collar, a wool scarf seals the gap the hood leaves open at the neck. Navy rather than black, so the scarf reads against the coat in a photograph under the Gwanghwamun lights instead of vanishing into it.
08Black leather bucket shoulder bagA soft bucket bag on the shoulder holds the gloves and beanie when you walk into a heated shop, and it sits under your arm instead of catching on the crowd at the market. Black, because the capsule's colour budget is spent on the beanie.
Day to night
Grey chunky turtleneck · black wide trousers over a thermal · black lined boots · padded coat open · black bucket bag. Changdeokgung at ten while the sun is on the courtyards, lunch in Ikseon-dong.
Same turtleneck and trousers · coat zipped, hood down · cranberry beanie · navy scarf · black lined gloves. Gwanghwamun Square after dark, Cheonggyecheon on foot, then dinner in Jongno.
A suggested look — black long down coat, cranberry ribbed beanie, navy wool scarf, black wide-leg trousers, black lace-up winter boots.
What to avoid
- November's wool coat alone — −4.2°C nights, frost on about 25
- A rain shell — about 27mm of rain or snow all month
- Cropped trousers with short socks — a bare ankle at −4°C / 25°F
- Smooth leather soles — frozen pavement on frost mornings
- Afternoon-only plans — sunset before 5:20pm, then eight degrees colder
Frequently asked questions
NOAA NCEI's daily record for Seoul (KMA station 108, 30 Decembers from 1991 to 2020) gives an average high of 4.0°C and a low of −4.2°C. It is dry: about 27mm of rain or snow over some 6 days of 1mm or more. Frost is the rule, on about 25 nights a month. The cold deepens as the month goes, from 5.6°C and −2.7°C in the first ten days to 3.0°C and −5.2°C in the last. Daylight holds near 9 hours 35 minutes, with sunset just after 5:10pm.
A long black padded coat with a hood, a heather grey chunky turtleneck, black wide-leg trousers with room for a thermal, black lined lace-up winter boots with a cleated sole, black lined leather gloves, a cranberry wool beanie, a navy wool scarf and a soft black shoulder bag. That covers a −4°C / 25°F evening on Gwanghwamun Square and a heated café ten minutes later. Leave the rain shell and November's wool coat at home.
In 2025 Seoul Winter Festa ran from 12 December to 4 January and drew about 11 million visitors, the city says, with a Christmas market on Gwanghwamun Square, lantern displays on Cheonggyecheon, a skating rink on Seoul Plaza that stayed open until 8 February, and the New Year bell at Bosingak on 31 December. The 2026 dates had not been announced when this guide was written. Dress for standing outdoors after dark at about −4°C / 25°F: the padded coat zipped, a beanie, gloves you keep on and cleated boots for a frozen square.
Early, if you want the milder end. NOAA's record averages 5.6°C by day and −2.7°C at night across the first ten days, against 3.0°C and −5.2°C in the last. Late December has the festivities: the winter festival opened on 12 December in 2025 and ran past New Year, and the Bosingak bell rings at midnight on the 31st. Both ends are dry, so choose by your plans, not by rain.
December runs about eight degrees colder by day and seven at night: NOAA's record gives November 11.8°C and 2.8°C and December 4.0°C and −4.2°C. Frost goes from about 9 nights to about 25, and the rain halves, from 59mm to 27mm. Our November guide keeps a camel wool coat and adds a down liner for the last week; December drops the wool coat for the long padded one the city switches to.
The long padded coat, in black, to the knee or below. Korea JoongAng Daily traces it to 1994, when it appeared as a bench coat in MBC's basketball drama Final Jump, and to a peak in 2017, when the PyeongChang Olympic version, 30,000 coats at 149,000 won, drew about 700 people to queue outside a Lotte Department Store, the first from 2am, The Korea Times reported. A PMI survey found four in ten people own one, and one wearer told JoongAng Daily: "It's a survival item for warmth." Under it, Seoul wears a knit, wide trousers and clean boots, with one colour at the head or neck.
Sources
- NOAA NCEI — 1991–2020 climate normals, Seoul (KMA 108) stationthe Korea Meteorological Administration operates the station; NOAA NCEI computed this month's figures from its global-summary-of-the-day record (47108099999, 30 Decembers). Recorded per month because Seoul's earlier pages cite KMA's own normals.
- NOAA NCEI — Global Summary of the Day, Seoul (KMA station 108, 47108099999), 1991–2020 — accessed 2026-09-27
- Seoul Metropolitan Government — 2025 Seoul Winter Festa results (12 Dec 2025 – 4 Jan 2026) — accessed 2026-09-27
- Korea JoongAng Daily — Why Koreans can't let go of the long padded jacket (Kim Ji-ye, 30 Nov 2024) — accessed 2026-09-27
- The Korea Times — Shoppers battle to buy PyeongChang long padded coats (Chyung Eun-ju, 19 Nov 2017) — accessed 2026-09-27
