January in Geoje is the sunniest and the coldest month of the year. In January, the weather in Geoje is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Geoje has 26 sunny, 4 partly cloudy, and 1 rainy day in January. The rains are usually heavy. January as well as February, March, July, and August is considered the most uncomfortable time to visit Geoje.