When to go · Udo Island
Udo Island in September
Great month. Inside Udo Island's best window: Apr–Jun, Sep–Oct.
Key facts
- Verdict
- Great
- Temperature
- 25°C (77°F)77°F (25°C) / 17°C (63°F)63°F (17°C)
- average high / low
- Rain days
- 8
- Crowds
- Medium
- South Korea overall
- Prices
- Medium
- South Korea overall
Verdict
Inside Udo Island's best window: Apr–Jun, Sep–Oct.
Is another month better than September?
No other month rates higher than September for Udo Island in this guide.
Weather in September
- Udo IslandHighs around 25 °C (77 °F), lows around 17 °C (63 °F), rain on about 8 daysHighs around 77 °F (25 °C), lows around 63 °F (17 °C), 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.
Compare two months
Weather, crowds and prices for any two months in Udo Island, side by side.
Verdict
Sep: Great
Apr: Great
Daytime high
Sep: 25 °C (77 °F)77 °F (25 °C)
Apr: 16 °C (61 °F)61 °F (16 °C)
Night low
Sep: 17 °C (63 °F)63 °F (17 °C)
Apr: 7 °C (45 °F)45 °F (7 °C)
Rain days
Sep: 8 (better)
Apr: 9
Crowds
Sep: Medium
Apr: High
Prices
Sep: Medium
Apr: High
Festivals listed
Sep: 1
Apr: 0
September: Inside Udo Island's best window: Apr–Jun, Sep–Oct.
April: Inside Udo Island's best window: Apr–Jun, Sep–Oct.
Udo Island: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.