March weather forecast in Carnac

In March, the weather in Carnac is typically warm. Average daily high temperature in March is about 10 degrees above zero. On average, Carnac has 13 rainy, 8 sunny, 6 partly cloudy, and 4 cloudy days in March. The rains are usually moderate. March as well as January, February, April, and October is considered the most uncomfortable time to visit Carnac.