Incheon weather in December
December in Incheon: cold, dry — a fair time to visit.
#11 of 12 months in Incheon · #741 of 897 destinations to visit in December · comfort 52/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Incheon in December
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Incheon climate normals — December
| Daytime high | 3°C / 38°F | 🧥 cold |
|---|---|---|
| Nighttime low | -4°C / 25°F | |
| Rainfall | 26 mm / 1 in | ☀️ dry |
| Rainy days | 5 days | |
| Humidity | 65% | 💧 humid |
| Dew point | -7°C / 19°F | |
| Sunshine | 7.2 h/day | |
| Daylight | 9.6 h | |
| Wind | 18 km/h / 11 mph | |
| Snowfall | 3.7 cm / 1.5 in | |
| Air quality (US AQI) | 77 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Incheon in December — FAQ
- Is December a good time to visit Incheon?
- December in Incheon: cold, dry — a fair time to visit. It ranks #11 of 12 months for Incheon on SeasonMap's comfort score (52/100).
- What is the weather like in Incheon in December?
- In December, Incheon averages a daily high of 3.3°C and a low of -3.8°C, with about 26.3 mm of rain over roughly 4.8 rainy days.
- What is the air quality in Incheon in December?
- Incheon has a mean US Air Quality Index of about 77 in December.
- Does it snow in Incheon in December?
- Incheon sees roughly 3.7 cm of snowfall in December.