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Siheung

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Siheung Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Siheung year round climate

  • Spring (March–May): Average 44–64°F, 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 73–82°F, 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 46–60°F, 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 -32–44°F, cold and dry, with occasional snowfall. Common activities: Indoor activities, hot spring trips. Recommended clothing: Heavy coat, hat, scarf, gloves.

Siheung climatological average

Annual average temperature: approx. 56.3°F / Annual rainfall: approx. 1376 mm / Summer humidity: 70%–80% / Rainiest month: July

Siheung monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
28.2°F
16.7
February
33.8°F
19.8
March
44.6°F
37.1
April
55.8°F
56.4
May
63.9°F
91.8
June
72.9°F
193.7
July
79.7°F
320.6
August
81.7°F
274.1
September
75.4°F
182.5
October
60.1°F
93.2
November
47.8°F
61.3
December
31.3°F
29.6

Siheung weather for the next seven days

9/20
Sunday
Sunny
82.2°F/63.9°F
9/21
Monday
Sunny
84°F/64.9°F
9/22
Tuesday
Sunny
83.1°F/63°F
9/23
Wednesday
Sunny
82.8°F/65.8°F
9/24
Thursday
Overcast
82.9°F/67.5°F
9/25
Friday
Overcast
73.5°F/67.6°F
9/26
Saturday
Overcast
77.9°F/62.3°F