In October, the weather in Angra dos Reis is typically warm. Average daily high temperature in October is about 22 degrees above zero. On average, Angra dos Reis has 18 rainy, 5 sunny, 5 partly cloudy, and 3 cloudy days in October. The rains are usually heavy. October as well as January, February, March, and April is considered the most uncomfortable time to visit Angra dos Reis.