December weather forecast in Niteroi

December in Niteroi is the cloudiest month of the year. In December, the weather in Niteroi is typically hot. Average daily high temperature in December is about 28 degrees above zero. On average, Niteroi has 18 rainy, 5 sunny, 5 cloudy, and 3 partly cloudy days in December. The rains are usually heavy. December as well as January, February, March, and November is considered the most uncomfortable time to visit Niteroi.