August in Juiz de Fora is the sunniest month of the year. In August, the weather in Juiz de Fora is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, Juiz de Fora has 18 sunny, 11 partly cloudy, and 2 rainy 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.