Jeju weather in December
December in Jeju: cold, a little rain, with clean air — one of the weakest months to visit.
#11 of 12 months in Jeju · #496 of 604 destinations to visit in December · comfort 49/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Jeju climate normals — December
| Daytime high | 11°C / 51°F | 🧥 cold |
|---|---|---|
| Nighttime low | 7°C / 45°F | |
| Feels like (high) | 7°C / 45°F | |
| Rainfall | 61 mm / 2.4 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 68% | 💧 humid |
| Dew point | 3°C / 38°F | |
| Sunshine | 5.7 h/day | |
| Daylight | 10 h | |
| Wind | 28 km/h / 17 mph | |
| Snowfall | 7 cm / 2.8 in | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Jeju in December — FAQ
- Is December a good time to visit Jeju?
- December in Jeju: cold, a little rain, with clean air — one of the weakest months to visit. It ranks #11 of 12 months for Jeju on SeasonMap's comfort score (49/100).
- What is the weather like in Jeju in December?
- In December, Jeju averages a daily high of 10.7°C and a low of 7.2°C, with about 61.2 mm of rain over roughly 10.6 rainy days.
- What is the air quality in Jeju in December?
- Jeju has a mean US Air Quality Index of about 47 in December.
- Does it snow in Jeju in December?
- Jeju sees roughly 7 cm of snowfall in December.