January in Aix-en-Provence is the cloudiest and the coldest month of the year. In January, the weather in Aix-en-Provence is typically cold. Average daily high temperature in January is about 8 degrees above zero. On average, Aix-en-Provence has 14 partly cloudy, 12 sunny, 4 rainy, and 1 cloudy day in January. The rains are usually light. January as well as February and December is considered the most uncomfortable time to visit Aix-en-Provence.