When to go · Cheonan
Cheonan in September
Great month. Inside Cheonan's best window: Apr–Jun, Sep–Nov.
Key facts
- Verdict
- Great
- Temperature
- 26°C79°F / 15°C59°F
- average high / low
- Rain days
- 8
- Crowds
- Medium
- South Korea overall
- Prices
- Medium
- South Korea overall
Verdict
GreatBest and avoid months for Cheonan
Inside Cheonan's best window: Apr–Jun, Sep–Nov.
Weather in September
- CheonanHighs around 26.1 °C, lows around 15.2 °C, rain on about 8 daysHighs around 79 °F, lows around 59 °F, rain on about 8 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.
Chuseok (harvest festival) big impact
Chuseok: 24–26 Sep 2026 (passed); about 14–16 Sep 2027 (check) · South Korea
Same three-day shutdown as Seollal; the largest travel peak of the year.
Crowds and prices
- Crowds · South Korea overall
- Medium
- Prices · South Korea overall
- Medium
South Korea overall: Heat eases; typhoon risk remains and Chuseok shuts the country for 3 days in many years.
What to pack
Nothing unusual for the weather this month.