When to go · Icheon
Icheon in September
Great month. Inside Icheon's best window: Apr–Jun, Sep–Oct.
Key facts
- Verdict
- Great
- Temperature
- 26°C (79°F)79°F (26°C) / 15°C (59°F)59°F (15°C)
- average high / low
- Rain days
- 12
- Crowds
- Medium
- South Korea overall
- Prices
- Medium
- South Korea overall
Verdict
Inside Icheon's best window: Apr–Jun, Sep–Oct.
Is another month better than September?
No other month rates higher than September for Icheon in this guide.
Weather in September
- IcheonHighs around 26 °C (79 °F), lows around 15 °C (59 °F), rain on about 12 daysHighs around 79 °F (26 °C), lows around 59 °F (15 °C), rain on about 12 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.
Compare two months
Weather, crowds and prices for any two months in Icheon, side by side.
Verdict
Sep: Great
Apr: Great
Daytime high
Sep: 26 °C (79 °F)79 °F (26 °C)
Apr: 19.3 °C (67 °F)67 °F (19.3 °C)
Night low
Sep: 15 °C (59 °F)59 °F (15 °C)
Apr: 5 °C (41 °F)41 °F (5 °C)
Rain days
Sep: 12
Apr: 10 (better)
Crowds
Sep: Medium
Apr: High
Prices
Sep: Medium
Apr: High
Festivals listed
Sep: 1
Apr: 0
September: Inside Icheon's best window: Apr–Jun, Sep–Oct.
April: Inside Icheon's best window: Apr–Jun, Sep–Oct.
Icheon: figures are long-term averages from this guide, not a forecast.
What to pack
- A rain jacket or umbrella and shoes that dry fast