July in Ilhabela is the coldest month of the year. In July, the weather in Ilhabela is typically warm. Average daily high temperature in July is about 21 degrees above zero. On average, Ilhabela has 19 sunny, 7 partly cloudy, and 5 rainy days in July. The rains are usually heavy. July as well as August is considered the most comfortable time to visit Ilhabela.