August in Santana de Parnaíba is the sunniest month of the year. In August, the weather in Santana de Parnaíba is typically warm. Average daily high temperature in August is about 22 degrees above zero. On average, Santana de Parnaíba has 20 sunny, 7 partly cloudy, 3 rainy, and 1 cloudy day in August. The rains are usually moderate. August as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Santana de Parnaíba.