August is the hottest month in Jeju-do Island with an average temperature of 26.5°C (80°F) and the coldest is January at 6°C (43°F) with the most daily sunshine hours at 9 in August.
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3 days is enough to see the major sites of Jeju, so on the map I've outlined where to go for each day. This assumes that you can arrive at the first spot around 9am, and will be tired enough for dinner and relaxation around 7pm. If this sounds like you, this may be your perfect Jeju itinerary.
High season is considered to be June, July and August. The cheapest month to fly from United States is March. Enter your preferred departure airport and travel dates into the search form above to unlock the latest Jeju City flight deals.