January in Tunja is the sunniest and the warmest month of the year. In January, the weather in Tunja is typically warm. Average daily high temperature in January is about 16 degrees above zero. On average, Tunja has 24 rainy, 6 cloudy, and 1 sunny day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit Tunja.