July in Muan is the rainiest month of the year. In July, the weather in Muan is typically warm. Average daily high temperature in July is about 27 degrees above zero. On average, Muan has 19 rainy, 6 sunny, 3 cloudy, and 3 partly cloudy days in July. The rains are usually heavy. July as well as January, February, August, and December is considered the most uncomfortable time to visit Muan.