Sanji is a city of approximately 8,900 people in Jeju-do, South Korea. Located in the Korea Standard Time zone at 33.5°N latitude.
In 2025, Sanji recorded an average annual temperature of 63°F. The hottest temperatures reached 92°F in August; the coolest were 28°F in February. Total precipitation for the year was 66 inches, with the wettest month being August. Snowfall for the year totaled approximately 12 inches.
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