August in Atibaia is the sunniest month of the year. In August, the weather in Atibaia is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, Atibaia has 24 sunny, 6 partly cloudy, and 1 rainy day in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Atibaia.