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
12/15
Monday
Partly Cloudy
39.8°F/30.6°F
12/16
Tuesday
Patchy rain nearby
45.5°F/36.3°F
12/17
Wednesday
Sunny
45.6°F/36°F
12/18
Thursday
Sunny
43.1°F/35.4°F
12/19
Friday
Sunny
48.8°F/36.4°F
12/20
Saturday
Partly Cloudy
53.3°F/43.5°F
12/21
Sunday
Cloudy
46.3°F/32.7°F
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