January in Poros is the rainiest, the windiest, and the cloudiest month of the year. In January, the weather in Poros is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Poros has 15 rainy, 7 sunny, 6 partly cloudy, and 3 cloudy days in January. The rains are usually heavy. January as well as February, March, November, and December is considered the most uncomfortable time to visit Poros.