January in Wigan is the rainiest, the windiest, and the coldest month of the year. In January, the weather in Wigan is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Wigan has 23 rainy, 5 sunny, and 3 cloudy days in January. The rains are usually moderate. January as well as February, July, August, and October is considered the most uncomfortable time to visit Wigan.