January in Udine is the coldest month of the year. In January, the weather in Udine is typically cold. Average daily high temperature in January is about 5 degrees above zero. On average, Udine has 13 partly cloudy, 10 sunny, 5 rainy, and 3 cloudy days in January. The rains are usually heavy. January as well as February, November, and December is considered the most uncomfortable time to visit Udine.