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Siheung

Siheung 1
Travel guide
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Travel guide
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Best time to visit Siheung

Data source:Meteostat
Last updated:2025-09

Weather in Siheung throughout the year

  • Spring (March–May): Average 7–18°C, mild climate with gradually increasing rainfall. March can still be chilly, April becomes warm and comfortable, while May is warmer and more humid. Common activities: Hiking, flower viewing, outings. Recommended clothing: Light jacket, long-sleeved shirt, comfortable sneakers.
  • Summer (June–August): Average 23–28°C, hot and humid with abundant rainfall, especially in July. Common activities: Swimming, water activities, escaping the heat. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 8–16°C, pleasant climate, cool and comfortable, with gradually decreasing rainfall. Common activities: Mountain climbing, maple leaf viewing, outdoor activities. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Winter (December–February): Average -0.4–7°C, cold and dry, with occasional snowfall. Common activities: Indoor activities, hot spring trips. Recommended clothing: Heavy coat, hat, scarf, gloves.

Weather in Siheung

Annual average temperature: approx. 13.5°C / Annual rainfall: approx. 1376 mm / Summer humidity: 70%–80% / Rainiest month: July

Siheung weather by month

Month
Temperature (°C)
Rainfall (mm)
January
-2.1°C
16.7
February
1°C
19.8
March
7°C
37.1
April
13.2°C
56.4
May
17.7°C
91.8
June
22.7°C
193.7
July
26.5°C
320.6
August
27.6°C
274.1
September
24.1°C
182.5
October
15.6°C
93.2
November
8.8°C
61.3
December
-0.4°C
29.6

7-day weather forecast for Siheung

11/10
Tuesday
Sunny
10.5°C/3.1°C
11/11
Wednesday
Sunny
13.2°C/6°C
11/12
Thursday
Smoky haze
14°C/6.3°C
11/13
Friday
Overcast
16.4°C/10°C
11/14
Saturday
Overcast
16°C/10.2°C
11/15
Sunday
Partly Cloudy
15°C/10.5°C
11/16
Monday
Cloudy
14.2°C/9.4°C