January in Miryang is the sunniest and the coldest month of the year. In January, the weather in Miryang is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Miryang has 18 sunny, 9 partly cloudy, 3 rainy, and 1 cloudy day in January. The rains are usually light. January as well as July and August is considered the most uncomfortable time to visit Miryang.