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Asan

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Asan Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Asan year round climate

  • Spring (March–May): Average 45–65°F, mild climate. Temperatures gradually warm from March, and rainfall gradually increases. Common activities: Hiking, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt. Note that there is a large temperature difference between morning and evening.
  • Summer (June–August): Average 74–81°F, hot and humid, abundant rainfall, especially in July. Common activities: Summer resort activities, water activities. Recommended clothing: Light and breathable clothing, sun hat, sunglasses.
  • Autumn (September–November): Average 47–74°F, comfortable and pleasant climate. Rainfall gradually decreases, and temperatures begin to drop. Common activities: Outing, maple viewing (depending on tree species). Recommended clothing: Comfortable long-sleeved shirts, light jackets.
  • Winter (December–February): Average -34–34°F, cold and dry, less rainfall. Common activities: Indoor activities, onsen experience. Recommended clothing: Warm coat, hat, scarf, gloves.

Asan climatological average

Annual average temperature: approx. 56.8°F / Annual rainfall: approx. 1705 mm / Summer humidity: 70%–80% / Rainiest month: July

Asan monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
29.5°F
21.3
February
34.5°F
31.5
March
45.7°F
51
April
57.6°F
57.6
May
65.5°F
104.3
June
74.1°F
170.8
July
80.2°F
414.3
August
81.1°F
398.2
September
74.5°F
187.9
October
59.5°F
108.8
November
47.7°F
101.8
December
31.8°F
58.1

Asan weather for the next seven days

5/16
Saturday
Sunny
83.1°F/55.8°F
5/17
Sunday
Sunny
82.1°F/54.7°F
5/18
Monday
Partly Cloudy
81.9°F/56.1°F
5/19
Tuesday
Partly Cloudy
75.2°F/58.6°F
5/20
Wednesday
Partly Cloudy
84.5°F/62.4°F
5/21
Thursday
Sunny
85.9°F/58.1°F
5/22
Friday
Moderate rain
79.6°F/59°F