July in Nova Iguaçu is the sunniest and the coldest month of the year. In July, the weather in Nova Iguaçu is typically warm. Average daily high temperature in July is about 24 degrees above zero. On average, Nova Iguaçu has 15 sunny, 7 rainy, 6 partly cloudy, and 3 cloudy days in July. The rains are usually light. July as well as June and August is considered the most comfortable time to visit Nova Iguaçu.