Weather in Seoul in December
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Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youIn December, Seoul sees average highs of 2.7°C (36.9°F) and lows of -6.0°C. Conditions are very cold and mostly dry with only occasional showers, with roughly 7.2 hours of sunshine a day. This is peak season for good reason — conditions are close to ideal. For the complete picture, see the best time to visit Seoul — every month compared. Once you know when to go, find your Seoul packing list at 247PackingList.
Get ready for Seoul in December
Search flights to Seoul
Compare 100+ airlines for December — one search, best price.
Search Flights →Thermal travel layers
Pack proper layers — winters are genuinely cold and evenings drop fast year-round.
Check Price →What to pack for Seoul in December
- Warm winter coat
- Thermal underlayers
- Gloves, hat and scarf
- Waterproof boots
Compare all months in Seoul
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 2.4°C | 30.6mm | 8/10 |
| February | 5.3°C | 19.5mm | 10/10 |
| March | 12.4°C | 52.9mm | 10/10 |
| April | 17.3°C | 62.1mm | 10/10 |
| May | 22.2°C | 128.7mm | 9/10 |
| June | 26.3°C | 193.2mm | 9/10 |
| July | 28.7°C | 274.8mm | 8/10 |
| August | 28.4°C | 401.9mm | 8/10 |
| September | 25.0°C | 195.8mm | 9/10 |
| October | 18.2°C | 74.9mm | 10/10 |
| November | 11.5°C | 72.3mm | 10/10 |
| December | 2.7°C | 26.6mm | 8/10 |
Full month-by-month guide: best time to visit Seoul →
For facts about South Korea — currency, language and dialling code — see our South Korea country guide at 247CountryInfo. Travellers also find it useful to keep a Seoul travel guide to hand. Check clothing sizes in South Korea before you shop.
Frequently Asked Questions
Is December a good time to visit Seoul?
December rates 8/10 for visiting Seoul — good time to visit. Expect average highs of 2.7°C, 26.6mm of rain across the month and about 7.2 hours of daily sunshine.
What is the temperature in Seoul in December?
In December, Seoul has average highs of 2.7°C (36.9°F) and average lows of -6.0°C (21.2°F).
Does it rain in Seoul in December?
Not much. December averages just 26.6mm of rain in Seoul — the odd shower is possible but most days stay dry.
What should I wear in Seoul in December?
For Seoul in December (2.7°C highs / -6.0°C lows), pack warm winter coat plus thermal underlayers, gloves, hat and scarf, waterproof boots.
More essentials for Seoul in December
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.