December weather forecast in Carnac

In December, the weather in Carnac is typically warm. Average daily high temperature in December is about 10 degrees above zero. On average, Carnac has 16 rainy, 6 sunny, 5 cloudy, and 4 partly cloudy days in December. The rains are usually heavy. December as well as January, February, and November is considered the most uncomfortable time to visit Carnac.