In May, the weather in Campos dos Goytacazes is typically warm. Average daily high temperature in May is about 25 degrees above zero. On average, Campos dos Goytacazes has 15 sunny, 10 partly cloudy, 5 rainy, and 1 cloudy day in May. The rains are usually light. May as well as June, July, August, and September is considered the most comfortable time to visit Campos dos Goytacazes.