December in Itaborai is the cloudiest month of the year. In December, the weather in Itaborai is typically hot. Average daily high temperature in December is about 29 degrees above zero. On average, Itaborai has 14 rainy, 7 cloudy, 6 sunny, and 4 partly cloudy days in December. The rains are usually heavy. December as well as January, March, and November is considered the most uncomfortable time to visit Itaborai.