When to go · Incheon
Incheon in January
Avoid month. Listed as a month to avoid: Jul–Aug (hot, humid) and Jan–Feb (cold, dry winds off the coast).
Key facts
- Verdict
- Avoid
- Temperature
- 1°C (34°F)34°F (1°C) / −6°C (21°F)21°F (−6°C)
- average high / low
- Rain days
- 6
- Crowds
- Low
- South Korea overall
- Prices
- Low
- South Korea overall
Verdict
Listed as a month to avoid: Jul–Aug (hot, humid) and Jan–Feb (cold, dry winds off the coast).
Is another month better than January?
January is rated avoid. These months rate higher:
Weather in January
- IncheonHighs around 1 °C (34 °F), lows around -6 °C (21 °F), rain on about 6 daysHighs around 34 °F (1 °C), lows around 21 °F (-6 °C), rain on about 6 days
- Seoul and north-west, South Korea · Seoul, Incheon, Suwon, the DMZcool
Continental: dry winters down to −15 °C (5 °F) on cold snaps, hot humid summers. Fine dust (yellow dust and pollution) peaks Mar–Apr; the monsoon runs late Jun – Jul.Continental: dry winters down to 5 °F (−15 °C) on cold snaps, hot humid summers. Fine dust (yellow dust and pollution) peaks Mar–Apr; the monsoon runs late Jun – Jul.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Seollal (Lunar New Year) big impact
About 5–8 Feb 2027 (lunar; incl. substitute day — check) · South Korea
Three-plus days off: many restaurants and shops close, trains and buses sold out, palaces open (often free), Seoul quiet.
Crowds and prices
- Crowds · South Korea overall
- Low
- Prices · South Korea overall
- Low
South Korea overall: Cold and dry, low prices; ski in Gangwon; Seollal can fall late in the month — check.
Compare two months
Weather, crowds and prices for any two months in Incheon, side by side.
Verdict
Jan: Avoid
Apr: Great (better)
Daytime high
Jan: 1 °C (34 °F)34 °F (1 °C)
Apr: 17 °C (63 °F)63 °F (17 °C)
Night low
Jan: -6 °C (21 °F)21 °F (-6 °C)
Apr: 8 °C (46 °F)46 °F (8 °C)
Rain days
Jan: 6 (better)
Apr: 7
Crowds
Jan: Low
Apr: High
Prices
Jan: Low
Apr: High
Festivals listed
Jan: 1
Apr: 0
January: Listed as a month to avoid: Jul–Aug (hot, humid) and Jan–Feb (cold, dry winds off the coast).
April: Inside Incheon's best window: Apr–Jun and Sep–Nov.
Incheon: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings
- Layers: a fleece or light jacket