January in Catania is the rainiest and the coldest month of the year. In January, the weather in Catania is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Catania has 19 sunny, 8 partly cloudy, and 4 rainy days in January. The rains are usually moderate. January as well as February is considered the most uncomfortable time to visit Catania.