January in San Miguel de Allende is the coldest month of the year. In January, the weather in San Miguel de Allende is typically warm. Average daily high temperature in January is about 22 degrees above zero. On average, San Miguel de Allende has 18 sunny, 9 partly cloudy, 2 rainy, and 2 cloudy days in January. The rains are usually light. January as well as February, November, and December is considered the most comfortable time to visit San Miguel de Allende.