August in Barbacena is the sunniest month of the year. In August, the weather in Barbacena is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Barbacena has 17 sunny, 12 partly cloudy, and 2 rainy days in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Barbacena.