January in Chinchon is the cloudiest and the coldest month of the year. In January, the weather in Chinchon is typically warm. Average daily high temperature in January is about 10 degrees above zero. On average, Chinchon has 10 sunny, 8 rainy, 7 partly cloudy, and 6 cloudy days in January. The rains are usually moderate. January as well as November and December is considered the most uncomfortable time to visit Chinchon.