Climate averages 1991–2020
Weather in South Korea in December
In December, average daytime highs across the 79 cities listed in South Korea range from 3.0°C in Chuncheon to 10.5°C in Jeju City. Monthly rainfall ranges from 20 mm in Andong to 68 mm in Jeju City.
Long-term climate patterns, not a forecast for a particular trip.
City by city
December in South Korea
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| Seoul | 3.5°C-4.7°C | -4.7°C | 23 | 4.8 |
| Busan | 8.6°C2.4°C | 2.4°C | 33 | 4.1 |
| Incheon | 3.6°C-3.5°C | -3.5°C | 22 | 5.0 |
| Daegu | 6.5°C-1.7°C | -1.7°C | 22 | 3.1 |
| Daejeon | 5.3°C-2.4°C | -2.4°C | 25 | 5.0 |
| Gwangju | 6.8°C-1.3°C | -1.3°C | 30 | 5.1 |
| Suwon | 3.9°C-3.9°C | -3.9°C | 23 | 5.1 |
| Ulsan | 8.0°C0.8°C | 0.8°C | 27 | 3.6 |
| Goyang-si | 3.4°C-4.6°C | -4.6°C | 22 | 4.8 |
| Changwon | 8.1°C0.3°C | 0.3°C | 26 | 3.5 |
| Seongnam-si | 3.7°C-4.3°C | -4.3°C | 25 | 4.7 |
| Cheongju-si | 4.8°C-2.9°C | -2.9°C | 24 | 4.5 |
| Bucheon-si | 3.8°C-3.7°C | -3.7°C | 22 | 5.0 |
| Cheonan | 4.7°C-2.9°C | -2.9°C | 23 | 5.0 |
| Hwaseong-si | 4.2°C-1.6°C | -1.6°C | 28 | 5.8 |
| Jeonju | 5.8°C-2.0°C | -2.0°C | 32 | 6.2 |
| Ansan-si | 4.1°C-2.7°C | -2.7°C | 28 | 5.8 |
| Anyang-si | 3.8°C-3.5°C | -3.5°C | 23 | 4.8 |
| Kimhae | 8.4°C0.9°C | 0.9°C | 28 | 3.6 |
| Pohang | 7.3°C0.5°C | 0.5°C | 23 | 3.7 |
| Jeju City | 10.5°C6.8°C | 6.8°C | 68 | 11.0 |
| Uijeongbu-si | 3.4°C-4.6°C | -4.6°C | 23 | 4.8 |
| Paju | 3.3°C-4.9°C | -4.9°C | 22 | 4.8 |
| Masan | 7.1°C-1.0°C | -1.0°C | 29 | 5.4 |
| Gumi | 5.8°C-2.1°C | -2.1°C | 22 | 3.6 |
| Sejong | 4.8°C-2.9°C | -2.9°C | 23 | 4.5 |
| Pyeongtaek | 4.3°C-3.2°C | -3.2°C | 23 | 5.2 |
| Yangsan | 8.4°C0.4°C | 0.4°C | 28 | 3.6 |
| Gwangmyeong | 3.7°C-4.2°C | -4.2°C | 22 | 5.0 |
| Wŏnju | 3.3°C-4.7°C | -4.7°C | 28 | 5.5 |
| Chinju | 7.6°C-2.2°C | -2.2°C | 28 | 3.6 |
| Iksan | 5.9°C-1.8°C | -1.8°C | 25 | 4.9 |
| Chuncheon | 3.0°C-4.5°C | -4.5°C | 26 | 5.0 |
| Suncheon | 7.8°C-0.7°C | -0.7°C | 28 | 3.8 |
| Yeosu | 7.9°C2.1°C | 2.1°C | 31 | 3.9 |
| Mokpo | 7.4°C2.0°C | 2.0°C | 36 | 6.7 |
| Gyeongsan-si | 6.8°C-1.6°C | -1.6°C | 22 | 3.2 |
| Gunsan | 5.8°C0.0°C | 0.0°C | 27 | 5.7 |
| Hanam | 3.7°C-4.5°C | -4.5°C | 25 | 4.7 |
| Gyeongju | 7.3°C-1.2°C | -1.2°C | 25 | 3.4 |
| Osan | 4.2°C-3.6°C | -3.6°C | 23 | 5.1 |
| Geoje | 9.0°C4.5°C | 4.5°C | 39 | 4.8 |
| Chungju | 3.8°C-3.8°C | -3.8°C | 28 | 5.2 |
| Gangneung | 5.1°C-1.2°C | -1.2°C | 36 | 5.3 |
| Gimpo-si | 3.5°C-3.7°C | -3.7°C | 22 | 5.0 |
| Icheon-si | 3.8°C-4.3°C | -4.3°C | 25 | 5.1 |
| Guri-si | 3.4°C-4.7°C | -4.7°C | 25 | 4.7 |
| Yangju | 3.2°C-4.8°C | -4.8°C | 23 | 4.8 |
| Seogwipo | 10.5°C6.2°C | 6.2°C | 55 | 8.1 |
| Gijang | 8.5°C2.7°C | 2.7°C | 33 | 4.1 |
| Gwangyang | 7.7°C-0.7°C | -0.7°C | 28 | 3.6 |
| Andong | 4.9°C-2.8°C | -2.8°C | 20 | 3.7 |
| Gimcheon | 5.5°C-2.3°C | -2.3°C | 26 | 4.3 |
| Jeongeup | 6.1°C-1.4°C | -1.4°C | 31 | 6.0 |
| Yeoju | 3.7°C-4.4°C | -4.4°C | 26 | 5.0 |
| Hwado | 3.2°C-4.7°C | -4.7°C | 26 | 5.1 |
| Sangju | 5.2°C-2.6°C | -2.6°C | 22 | 4.1 |
| Donghae City | 5.4°C-1.2°C | -1.2°C | 35 | 5.0 |
| Asan | 4.6°C-2.8°C | -2.8°C | 23 | 4.9 |
| Wabu | 3.4°C-4.7°C | -4.7°C | 25 | 4.7 |
| Boryeong | 5.8°C-0.1°C | -0.1°C | 31 | 7.1 |
| Muan | 7.4°C0.8°C | 0.8°C | 26 | 4.5 |
| Kwangyang | 7.8°C-0.2°C | -0.2°C | 28 | 3.8 |
| Hongseong | 5.1°C-1.9°C | -1.9°C | 24 | 5.2 |
| Yeongju | 4.2°C-3.7°C | -3.7°C | 20 | 3.6 |
| Yangp'yŏng | 4.0°C-4.0°C | -4.0°C | 26 | 5.0 |
| Ungsang | 7.8°C0.9°C | 0.9°C | 27 | 3.6 |
| Sinhyeon | 8.8°C3.9°C | 3.9°C | 34 | 3.9 |
| Gwangju, South Korea | 3.9°C-4.1°C | -4.1°C | 25 | 4.7 |
| Nangen | 6.3°C-1.8°C | -1.8°C | 31 | 5.3 |
| Sokcho | 4.0°C-2.5°C | -2.5°C | 39 | 5.9 |
| Naesŏ | 7.9°C-0.4°C | -0.4°C | 25 | 3.2 |
| Mungyeong | 4.5°C-3.1°C | -3.1°C | 22 | 4.1 |
| Hongch’ŏn | 3.1°C-4.8°C | -4.8°C | 28 | 5.6 |
| Changnyeong | 7.2°C-2.2°C | -2.2°C | 22 | 3.1 |
| Seosan | 5.0°C-0.5°C | -0.5°C | 26 | 6.1 |
| Koch'ang | 6.7°C-0.2°C | -0.2°C | 31 | 6.5 |
| Gongju | 5.3°C-2.1°C | -2.1°C | 24 | 4.6 |
| Tongyeong | 8.2°C2.2°C | 2.2°C | 37 | 4.3 |
A rain day is a local calendar day with at least 1 mm of precipitation.