January in Jataí is the rainiest and the cloudiest month of the year. In January, the weather in Jataí is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, Jataí has 29 rainy and 2 sunny days in January. The rains are usually heavy. January as well as February, March, October, and November is considered the most uncomfortable time to visit Jataí .