August in Fernando De Noronha is the coldest month of the year. In August, the weather in Fernando De Noronha is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, Fernando De Noronha has 18 rainy, 10 sunny, and 3 partly cloudy days in August. The rains are usually light. August as well as January, February, March, and April is considered the most uncomfortable time to visit Fernando De Noronha.