In January, the weather in Nova Iguaçu is typically hot. Average daily high temperature in January is about 30 degrees above zero. On average, Nova Iguaçu has 21 rainy, 4 partly cloudy, 3 sunny, and 3 cloudy days in January. The rains are usually heavy. January as well as February, March, November, and December is considered the most uncomfortable time to visit Nova Iguaçu.