When to go · Siheung
Siheung in October
Great month. Inside Siheung's best window: Apr–Jun, Sep–Oct.
Key facts
- Verdict
- Great
- Temperature
- 21°C (70°F)70°F (21°C) / 10°C (50°F)50°F (10°C)
- average high / low
- Rain days
- 6
- Crowds
- High
- South Korea overall
- Prices
- High
- South Korea overall
Verdict
Inside Siheung's best window: Apr–Jun, Sep–Oct.
Is another month better than October?
No other month rates higher than October for Siheung in this guide.
Weather in October
- SiheungHighs around 21 °C (70 °F), lows around 10 °C (50 °F), rain on about 6 daysHighs around 70 °F (21 °C), lows around 50 °F (10 °C), rain on about 6 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
- High
- Prices · South Korea overall
- High
South Korea overall: Clear skies, autumn colour in the mountains, festivals everywhere; Chuseok falls here some years.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Siheung, side by side.
Verdict
Oct: Great
Apr: Great
Daytime high
Oct: 21 °C (70 °F)70 °F (21 °C)
Apr: 17 °C (63 °F)63 °F (17 °C)
Night low
Oct: 10 °C (50 °F)50 °F (10 °C)
Apr: 7 °C (45 °F)45 °F (7 °C)
Rain days
Oct: 6 (better)
Apr: 7
Crowds
Oct: High
Apr: High
Prices
Oct: High
Apr: High
Festivals listed
Oct: 1
Apr: 0
October: Inside Siheung's best window: Apr–Jun, Sep–Oct.
April: Inside Siheung's best window: Apr–Jun, Sep–Oct.
Siheung: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings