July in Montpellier is the warmest month of the year. In July, the weather in Montpellier is typically warm. Average daily high temperature in July is about 27 degrees above zero. On average, Montpellier has 29 sunny, 1 rainy, and 1 partly cloudy day in July. The rains are usually light. July as well as June, August, and September is considered the most comfortable time to visit Montpellier.