In May, the weather in Gwangmyeong is typically warm. Average daily high temperature in May is about 20 degrees above zero. On average, Gwangmyeong has 14 partly cloudy, 13 sunny, 3 rainy, and 1 cloudy day in May. The rains are usually light. May as well as September and October is considered the most comfortable time to visit Gwangmyeong.