August in Sao Jose dos Campos is the sunniest month of the year. In August, the weather in Sao Jose dos Campos is typically warm. Average daily high temperature in August is about 23 degrees above zero. On average, Sao Jose dos Campos has 20 sunny, 8 partly cloudy, and 3 rainy days in August. The rains are usually light. August as well as July is considered the most comfortable time to visit Sao Jose dos Campos.