When to go · Sejong City
Sejong City in January
Avoid month. Listed as a month to avoid: Jul–Aug (heavy rain, 285 mm in July), late Jan–Feb (cold, -8 °C (18 °F) nights).Avoid month. Listed as a month to avoid: Jul–Aug (heavy rain, 285 mm in July), late Jan–Feb (cold, 18 °F (-8 °C) nights).
Key facts
- Verdict
- Avoid
- Temperature
- 4°C (39°F)39°F (4°C) / −8°C (18°F)18°F (−8°C)
- average high / low
- Rain days
- 7
- Crowds
- Low
- South Korea overall
- Prices
- Low
- South Korea overall
Verdict
Listed as a month to avoid: Jul–Aug (heavy rain, 285 mm in July), late Jan–Feb (cold, -8 °C (18 °F) nights).Listed as a month to avoid: Jul–Aug (heavy rain, 285 mm in July), late Jan–Feb (cold, 18 °F (-8 °C) nights).
Is another month better than January?
January is rated avoid. These months rate higher:
Weather in January
- Sejong CityHighs around 4 °C (39 °F), lows around -8 °C (18 °F), rain on about 7 daysHighs around 39 °F (4 °C), lows around 18 °F (-8 °C), rain on about 7 days
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 Sejong City, side by side.
Verdict
Jan: Avoid
Apr: Great (better)
Daytime high
Jan: 4 °C (39 °F)39 °F (4 °C)
Apr: 20 °C (68 °F)68 °F (20 °C)
Night low
Jan: -8 °C (18 °F)18 °F (-8 °C)
Apr: 5 °C (41 °F)41 °F (5 °C)
Rain days
Jan: 7
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 (heavy rain, 285 mm in July), late Jan–Feb (cold, -8 °C nights).
April: Inside Sejong City's best window: Apr–May, Oct.
Sejong City: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings