January in Tunis is the rainiest, the windiest, and the coldest month of the year. In January, the weather in Tunis is typically warm. Average daily high temperature in January is about 14 degrees above zero. On average, Tunis has 13 sunny, 10 partly cloudy, and 8 rainy days in January. The rains are usually light. January as well as February and December is considered the most uncomfortable time to visit Tunis.