January in Ajaccio is the cloudiest month of the year. In January, the weather in Ajaccio is typically warm. Average daily high temperature in January is about 10 degrees above zero. On average, Ajaccio has 13 partly cloudy, 9 sunny, 8 rainy, and 1 cloudy day in January. The rains are usually heavy. January as well as February, March, and November is considered the most uncomfortable time to visit Ajaccio.