Seoul Weather in December: Climate, Temperature & Travel Tips
Avg 0.2°C · 20mm rain — December is winter in Seoul.
- Avg high
- 4.0 °C
- Avg low
- -3.5 °C
- Avg
- 0.2 °C
- Precipitation
- 20 mm
Source: Open-Meteo Archive 2014–2023 · 10-year climate normals
Climate Overview
December in Seoul, South Korea brings winter conditions: average temperature 0.2°C, average high 4.0°C, average low -3.5°C. Monthly rainfall averages 20mm, making it a very dry time of year.
Pack winter clothing to stay comfortable during outdoor excursions.
What to Pack
- Heavy winter coat, thermal layers, gloves, hat
- Insulated waterproof boots
Best Things to Do
- Indoor museums, markets, and cafes
- Hot springs or indoor thermal facilities
- Evening illuminations and festivals (if any)
Pros and Cons of Visiting in December
Pros:
- Low rainfall — minimal disruption to outdoor plans
Cons:
- Cold conditions require winter gear
Climate source: Open-Meteo Archive (2014–2023).
Colour = avg temperature · blue = cool · orange = warm
- 1 August 26.6°C
- 2 July 25.4°C
- 3 June 23.2°C
- 1 January -1.8°C
- 2 December 0.2°C
- 3 February 1.2°C
FAQ
01 What is the average temperature in Seoul in December? +
The average is 0.2°C, with a high of 4°C and a low of -4°C.
02 What is Seoul like to visit in December? +
It is winter in Seoul, which is cool — bring warm clothes.
03 Does it rain often in Seoul during December? +
Average rainfall is 20mm, which is very dry.
04 What should I pack for Seoul in December? +
Heavy winter coat, thermal layers, gloves, hat; Insulated waterproof boots.
05 Is December a peak travel season for Seoul? +
It is closer to off-season, with more reasonable prices and fewer crowds.
06 Where does this climate data come from? +
Monthly averages computed from Open-Meteo Archive 2014–2023 daily observations.
- Sources
- Open-Meteo Archive 2014-2023
- Updated
- 2026-04-17