In December, the weather in Chefchaouen is typically warm. Average daily high temperature in December is about 15 degrees above zero. On average, Chefchaouen has 11 rainy, 10 partly cloudy, 7 sunny, and 3 cloudy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Chefchaouen.