January in Montpellier is the coldest month of the year. In January, the weather in Montpellier is typically cold. Average daily high temperature in January is about 9 degrees above zero. On average, Montpellier has 15 sunny, 12 partly cloudy, and 4 rainy days in January. The rains are usually light. January as well as February, November, and December is considered the most uncomfortable time to visit Montpellier.