When you're dreaming of a trip to Juchon-myeon, be sure to take into account the year-round temperatures. The hottest months are usually August and July with an average temp of 74°F, while the coldest months are January and December with an average of 40°F. The rainiest months in Juchon-myeon are July, September, August, and June, with each month seeing an average of 9 inches of rainfall.