January in Colon is the rainiest, the sunniest, and the hottest month of the year. In January, the weather in Colon is typically hot. Average daily high temperature in January is about 31 degrees above zero. On average, Colon has 17 sunny, 9 rainy, 3 partly cloudy, and 2 cloudy days in January. The rains are usually heavy. January as well as February and December is considered the most uncomfortable time to visit Colon.