When to go · Yangsan
Yangsan in September
Great month. Inside Yangsan's best window: Apr–Jun, Sep–Nov.
Key facts
- Verdict
- Great
- Temperature
- 27°C (81°F)81°F (27°C) / 19°C (66°F)66°F (19°C)
- average high / low
- Rain days
- 10
- Crowds
- Medium
- South Korea overall
- Prices
- Medium
- South Korea overall
Verdict
Inside Yangsan's best window: Apr–Jun, Sep–Nov.
Is another month better than September?
No other month rates higher than September for Yangsan in this guide.
Weather in September
- YangsanHighs around 27 °C (81 °F), lows around 19 °C (66 °F), rain on about 10 daysHighs around 81 °F (27 °C), lows around 66 °F (19 °C), rain on about 10 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 Yangsan, side by side.
Verdict
Sep: Great
Apr: Great
Daytime high
Sep: 27 °C (81 °F)81 °F (27 °C)
Apr: 20 °C (68 °F)68 °F (20 °C)
Night low
Sep: 19 °C (66 °F)66 °F (19 °C)
Apr: 9 °C (48 °F)48 °F (9 °C)
Rain days
Sep: 10
Apr: 9 (better)
Crowds
Sep: Medium
Apr: High
Prices
Sep: Medium
Apr: High
Festivals listed
Sep: 1
Apr: 0
September: Inside Yangsan's best window: Apr–Jun, Sep–Nov.
April: Inside Yangsan's best window: Apr–Jun, Sep–Nov.
Yangsan: figures are long-term averages from this guide, not a forecast.
What to pack
- A rain jacket or umbrella and shoes that dry fast