January in Tongyeong is the coldest month of the year. In January, the weather in Tongyeong is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Tongyeong has 16 sunny, 9 partly cloudy, 4 rainy, and 2 cloudy days in January. The rains are usually light. January as well as February, July, and August is considered the most uncomfortable time to visit Tongyeong.