January in Patmos is the rainiest and the cloudiest month of the year. In January, the weather in Patmos is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Patmos has 14 rainy, 10 sunny, 6 partly cloudy, and 1 cloudy day in January. The rains are usually heavy. January as well as February and December is considered the most uncomfortable time to visit Patmos.