With a population of around 10,500, Kwaksan sits in P'yongan-bukto, KP. The city operates in the Asia/Pyongyang time zone.
In 2025, Kwaksan recorded an average annual temperature of 50°F. The hottest temperatures reached 92°F in July; the coolest were -4°F in February. Total precipitation for the year was 60 inches, with the wettest month being August. Snowfall for the year totaled approximately 5 inches.
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