In May, the weather in Cachoeiro de Itapemirim is typically warm. Average daily high temperature in May is about 25 degrees above zero. On average, Cachoeiro de Itapemirim has 16 sunny, 11 partly cloudy, 3 rainy, and 1 cloudy day in May. The rains are usually light. May as well as July and August is considered the most comfortable time to visit Cachoeiro de Itapemirim.