December in Gwangju is the windiest month of the year. In December, the weather in Gwangju is typically cold. Average daily high temperature in December is about 5 degrees above zero. On average, Gwangju has 13 partly cloudy, 12 sunny, 4 rainy, and 2 cloudy days in December. The rains are usually light. December as well as January, July, and August is considered the most uncomfortable time to visit Gwangju.