In March, the weather in Mantes-la-Jolie is typically warm. Average daily high temperature in March is about 11 degrees above zero. On average, Mantes-la-Jolie has 12 rainy, 7 cloudy, 6 sunny, and 6 partly cloudy days in March. The rains are usually moderate. March as well as January, February, November, and December is considered the most uncomfortable time to visit Mantes-la-Jolie.