January in San Felice Circeo is the cloudiest month of the year. In January, the weather in San Felice Circeo is typically warm. Average daily high temperature in January is about 12 degrees above zero. On average, San Felice Circeo has 13 rainy, 10 sunny, 7 partly cloudy, and 1 cloudy day in January. The rains are usually heavy. January as well as February and November is considered the most uncomfortable time to visit San Felice Circeo.