Incheon Weather in January
Thinking of visiting Incheon in January? Expect low temperatures reaching 3°C (37°F) during the day, dropping to -5°C (23°F) at night, with the driest conditions of the year.
Rainfall in Incheon in January
Take advantage of the dry conditions this month, with minimal rain expected, even if it's a cooler time of year. Historically, the month has about 7 days of snow/rain, averaging 22 mm (0.9 in) in total. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Incheon in January
Daytime highs in Incheon in January reach 3°C (37°F), with nights around -5°C (23°F). Winter occurs in January. It stays very cold throughout much of the day, so warm winter clothing is essential. With overnight lows of -5°C (23°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. It's generally the coldest month of the year, making it essential to pack warm layers and winter accessories.
Sunshine in Incheon in January
The area enjoys a moderate level of sunlight, with around 188 hours. It's a good balance between sunny and cloudy days.January in Incheon can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
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 January
Min Temperature
-5°C (23°F)
Max Temperature
3°C (37°F)
Chance of Rain
23%
Precipitation
22 mm (0.9 in)
Rainy days
7 days
Humidity
60%
Sunshine
188 hours
Percentage Sunshine
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Incheon typically stay consistent throughout January, with daily highs averaging around 3°C (37°F). Nights are very cold, with lows typically ranging from -9°C (16°F) to -6°C (21°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Incheon in January
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 January
Our historical data for Incheon spans 1976 to 2025, revealing these weather extremes.
- The warmest day in January was on January 14, 2002, with a maximum of 15°C (59°F).
- The lowest overnight temperature recorded in January was -23°C (-9°F) (January 15, 2001).
Best Places in South Korea in January
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 January →
perfect weather
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tolerable
unpleasant
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What to Wear in Incheon in January
Dress warmly and in layers for your trip to Incheon in January. 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. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Incheon in January
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.
