January in Irapuato is the sunniest and the coldest month of the year. In January, the weather in Irapuato is typically warm. Average daily high temperature in January is about 20 degrees above zero. On average, Irapuato has 21 sunny and 10 partly cloudy days in January. January as well as February, March, November, and December is considered the most comfortable time to visit Irapuato.