January in Suncheon is the windiest and the coldest month of the year. In January, the weather in Suncheon is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Suncheon has 14 partly cloudy, 10 sunny, 4 rainy, and 3 cloudy days in January. The rains are usually light. January as well as July and August is considered the most uncomfortable time to visit Suncheon.