October in Foz do Iguaçu is the windiest month of the year. In October, the weather in Foz do Iguaçu is typically warm. Average daily high temperature in October is about 27 degrees above zero. On average, Foz do Iguaçu has 13 sunny, 11 rainy, 5 partly cloudy, and 2 cloudy days in October. The rains are usually heavy.