August in Sao Vicente is the sunniest month of the year. In August, the weather in Sao Vicente is typically warm. Average daily high temperature in August is about 22 degrees above zero. On average, Sao Vicente has 18 sunny, 8 partly cloudy, and 5 rainy days in August. The rains are usually moderate. August as well as June is considered the most comfortable time to visit Sao Vicente.