Incheon Weather in December
Thinking of visiting Incheon in December? Expect low temperatures reaching 6°C (43°F) during the day, dropping to -3°C (27°F) at night, with some snow/rainfall likely.
Rainfall in Incheon in December
Based on our climate data of the past 30 years, about 8 days of snow/rain are anticipated, with 27 mm (1.1 in) on average. Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Incheon in December
In December, expect low temperatures in Incheon, with highs of 6°C (43°F) and lows of -3°C (27°F) at night. December is in the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights are well below freezing at -3°C (27°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation.
Sunshine in Incheon in December
With about 178 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and October typically offer the best weather for Incheon.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Incheon's climate page.
Incheon Temperature in December
Min Temperature
-3°C (27°F)
Max Temperature
6°C (43°F)
Chance of Rain
25%
Precipitation
27 mm (1.1 in)
Rainy days
8 days
Humidity
62%
Sunshine
178 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Incheon typically drop from around 6°C (43°F) at the start of December to approximately 2°C (36°F) by the end. Nights are very cold, with lows typically ranging from -8°C (18°F) to -3°C (27°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Incheon in December
Browse day-by-day weather records for Incheon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Incheon historical weather extremes in December
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Incheon.
- Incheon recorded its highest December temperature of 16°C (61°F) on December 3, 2004.
- The lowest overnight temperature recorded in December was -18°C (0°F) (December 25, 1983).
Best Places in South Korea in December
Find out more about the weather in South Korea and which places have the best travel conditions in this month. See all of South Korea in December →
perfect weather
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What to Wear in Incheon in December
Dress warmly and in layers for your trip to Incheon in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Light rain is possible, so consider bringing a small umbrella or rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Incheon in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Korea, check out our Incheon's climate page.
Temperature Rainfall Sunshine Humidity
See the full Incheon climate overview or explore weather in South Korea.
