You will find actually no terrible time to go to Jeju, since the weather conditions is much milder as compared to Seoul. But summer is without a doubt peak year, with costs also at their peak as each people and honeymooners packing the shorelines & resorts. I rented mine through https://zander9repb.blogunteer.com/32084441/jejudo-island-tourism-제주도룸싸롱-for-dummies