December in Ajaccio is the windiest and the cloudiest month of the year. In December, the weather in Ajaccio is typically warm. Average daily high temperature in December is about 13 degrees above zero. On average, Ajaccio has 15 rainy, 8 partly cloudy, 7 sunny, and 1 cloudy day in December. The rains are usually heavy. December as well as January, February, March, and November is considered the most uncomfortable time to visit Ajaccio.