January in Wakayama is the coldest month of the year. In January, the weather in Wakayama is typically cold. Average daily high temperature in January is about 7 degrees above zero. On average, Wakayama has 12 sunny, 12 partly cloudy, and 7 rainy days in January. The rains are usually moderate. January as well as February, March, June, and July is considered the most uncomfortable time to visit Wakayama.