December weather forecast
South Korea

December in South Korea ushers in the full onset of winter, marked by cold temperatures and increased chances of snowfall. In Seoul, average temperatures can range from -5°C (23°F) to 4°C (39.2°F), making it one of the coldest months of the year. In contrast, the southern coastal city of Busan experiences slightly milder conditions, with temperatures ranging from 2°C (35.6°F) to 10°C (50°F).

Precipitation levels remain relatively low in December, averaging 25mm (0.98"). However, this precipitation is more likely to occur as snow, especially in the northern and interior regions. As the month progresses, the chances of snowfall increase, leading to frosty landscapes and, in certain areas, significant snow accumulation.

Compared to November, December is significantly colder and marks the true beginning of the snow season in South Korea. As the country moves into January, these wintry conditions persist, with temperatures dropping even further and snowfall becoming a more common occurrence, especially in the northern regions and mountainous areas. December thus acts as a transition into the peak winter conditions that are characteristic of January and February in South Korea.

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• Seoul - December »
  In December, in Seoul, South Korea, the rain falls for 7.4 days. Transition into December marks a drop in the average high-temperature, moving from a fresh 11.6°C (52.9°F) in November to a wintry 4.3°C (39.7°F).
• Busan - December »
  The months with the lowest UV index in Busan are January and December, with an average maximum UV index of 2. On the first day of December in Busan sunrise is at 07:13 and sunset at 17:11.
• Incheon - December »
  The month with the least rainfall in Incheon is December, when the rain falls for 7.3 days and typically collects 19mm (0.75") of precipitation. On the first day of December in Incheon sunrise is at 07:29 and sunset at 17:15.
• Daegu - December »
  During the month of December, an average temperature of -3.6°C (25.5°F) is noted during the nights in Daegu, South Korea. In Daegu, South Korea, in December, it is raining for 5 days, with typically 18mm (0.71") of accumulated precipitation.
• Daejeon - December »
  In Daejeon, South Korea, during December, snow falls for 8.1 days and regularly aggregates up to 40mm (1.57") of snow. January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Daejeon, South Korea.
• Gwangju - December »
  In Gwangju, in December, during 5.3 rainfall days, 10mm (0.39") of precipitation is typically accumulated. December has the shortest days of the year in Gwangju, with an average of 9h and 48min of daylight.
• Ulsan - December »
  In Ulsan, in December, it is raining for 6 days, with typically 29mm (1.14") of accumulated precipitation. On the last day of December, in Ulsan, sunrise is at 07:31 and sunset at 17:19 KST.
• Suwon - December »
  In Suwon during December, the rain falls for 8.1 days and regularly aggregates up to 22mm (0.87") of precipitation. December has the shortest days of the year in Suwon with an average of 9h and 42min of daylight.
• Goyang - December »
  On the first day of December in Goyang sunrise is at 07:29 and sunset at 17:14. The month with the shortest days in Goyang is December, with an average of 9h and 36min of daylight.
• Gumi - December »
  In Gumi during December, the rain falls for 4.9 days and regularly aggregates up to 17mm (0.67") of precipitation. With an average of 9h and 48min of daylight, December has the shortest days of the year in Gumi.