August in Salto del Guairá is the sunniest month of the year. In August, the weather in Salto del Guairá is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, Salto del Guairá has 18 sunny, 7 rainy, 5 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as July is considered the most comfortable time to visit Salto del Guairá.