In August, the weather in Juiz de Fora is typically warm. Average daily high temperature in August is about 24 degrees above zero. On average, Juiz de Fora has 14 sunny, 7 partly cloudy, 6 rainy, and 4 cloudy days in August. The rains are usually light. August as well as June and July is considered the most comfortable time to visit Juiz de Fora.