January in Mitú is the sunniest month of the year. In January, the weather in Mitú is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Mitú has 26 rainy, 3 sunny, and 2 cloudy days in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Mitú.