Kosan is a city of approximately 24,800 people in Kangwon-do, KP. Located in the Asia/Pyongyang time zone at 38.9°N latitude.
In 2025, Kosan recorded an average annual temperature of 52°F. The hottest temperatures reached 96°F in July; the coolest were -2°F in December. Total precipitation for the year was 41 inches, with the wettest month being October. Snowfall for the year totaled approximately 12 inches.
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