January in Forte dei Marmi is the coldest month of the year. In January, the weather in Forte dei Marmi is typically cold. Average daily high temperature in January is about 6 degrees above zero. On average, Forte dei Marmi has 14 rainy, 7 sunny, 7 partly cloudy, and 3 cloudy days in January. The rains are usually heavy. January as well as February, March, April, and November is considered the most uncomfortable time to visit Forte dei Marmi.