July in Changwon is the rainiest and the cloudiest month of the year. In July, the weather in Changwon is typically hot. Average daily high temperature in July is about 29 degrees above zero. On average, Changwon has 16 rainy, 7 partly cloudy, 5 sunny, and 3 cloudy days in July. The rains are usually heavy. July as well as January and August is considered the most uncomfortable time to visit Changwon.