What to pack for Seoul in December
Heading to Seoul in December? Here's a packing list built directly from local climate averages — not generic blog advice.
December is one of the coldest months of the year in Seoul (ranked 11 of 12) and among the driest (ranked 11 of 12). Day temperatures are 7°C cooler than November and cooling toward January — so this month's packing list won't be identical to November's or January's.
Essentials
- ★ Passport + a photocopy stored separately Travel documents
- ★ Phone + charging cables (USB-C, Lightning as needed) Daily essentials
- • Refillable water bottle (1L) Reduces single-use plastic + saves money
- • Compact daypack (15–20L) For day trips, hands-free walking
- • Travel-size first-aid kit (band-aids, ibuprofen, antihistamines) Pharmacy access varies
Tops
- ★ Thermal merino-wool base layers (3 sets) — e.g. Icebreaker, Smartwool Avg high only 4°C — base warmth without bulk
- ★ Heavy wool or cashmere sweaters (2) Insulation against deep cold
- • Fleece mid-layer (e.g. Patagonia R1, Uniqlo fleece) Temperature regulation
Bottoms
- ★ Insulated/lined trousers (2) — Uniqlo HEATTECH lined or similar Cold weather
- • Heavy jeans or wool pants (1) Backup for travel days
Outerwear & layers
- ★ Warm winter coat (wool overcoat or insulated parka) Overnight lows -3°C
- ★ Wool scarf + warm beanie Heat retention
- ★ Insulated gloves (touchscreen-compatible) Cold mornings
Rain & weather protection
- • Light rain jacket OR compact umbrella (pick one) 7 rain days
- • Waterproof boots Possible snow days
Footwear
- ★ Insulated waterproof boots (Blundstone, Sorel, or hiking-grade) Cold + possibly wet conditions
- ★ Wool socks (5+ pairs) — Smartwool, Darn Tough Warmth and dryness; cotton socks freeze fingers in damp cold
Accessories
- • Lip balm with SPF + thick hand cream Cold dry air cracks skin fast
Power, voltage & adapters
- ★ 220V at 60Hz Mains electricity standard for South Korea
- ★ Plug types: F, C (Type F — round 2-pin + side clips (Schuko — Germany, most of EU)) Most common: F. Older buildings may also use C.
- ★ From the US/Canada: bring an A→F travel adapter US Type A/B plugs don't fit South Korea's outlets
- ★ Check device voltage labels: 'INPUT: 100–240V' is dual-voltage (most modern phones, laptops, chargers — safe). Single-voltage 110V devices (older hairdryers, curling irons) need a step-down converter, not just an adapter. South Korea runs 220V — too high for US-only 110V devices
- • From the UK/Ireland: bring a G→F travel adapter UK Type G plugs don't fit South Korea's outlets
- · Easiest option: a universal travel adapter (e.g. Anker, Epicka) that handles A/B/C/E/F/G/I in one — covers ~95% of countries. If you travel to multiple regions
❌ Can you carry-on?
Probably not — winter coat, insulated boots, and thermal layers in December push most travellers into a checked bag, unless you're a committed minimalist with a dedicated cold-weather travel system.
24 suggested items total — 5 essentials, 8 clothing items, 2 pairs of shoes.
What you can leave at home
Based on Seoul's December climate, here's what won't earn its bag space:
- shorts & sandals (too cool to wear comfortably)
- beach towel (unless you're brave)
How this list was built
Every recommendation above maps to specific climate data for Seoul in December: average high (4°C), average low (-3°C), expected rain days (7), and any peak hazard seasons. Heavier items appear at colder temperatures; rain gear scales with how often it rains; sun protection appears when it's warm and dry.
The ★ items are essential — pack these first. The • items are recommended for comfort. The · items are nice-to-have if you have space.
Other months in Seoul
Daily forecasts, climate averages, and the best activities for the season.