In March, the weather in Montreuil is typically cold. Average daily high temperature in March is about 9 degrees above zero. On average, Montreuil has 11 rainy, 8 sunny, 7 partly cloudy, and 5 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 Montreuil.