January in Kermanshah is the rainiest and the coldest month of the year. In January, the weather in Kermanshah is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Kermanshah has 21 sunny, 5 rainy, 4 partly cloudy, and 1 cloudy day in January. The rains are usually light. January as well as February and December is considered the most uncomfortable time to visit Kermanshah.