Jangseong is a city of approximately 42,100 people in Jeollanam-do, South Korea. Located in the Korea Standard Time zone at 35.3°N latitude.
In 2025, Jangseong recorded an average annual temperature of 57°F. The hottest temperatures reached 96°F in July; the coolest were 12°F in February. Total precipitation for the year was 56 inches, with the wettest month being August. Snowfall for the year totaled approximately 3 inches.
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