In December, the weather in Angra dos Reis is typically warm. Average daily high temperature in December is about 26 degrees above zero. On average, Angra dos Reis has 27 rainy, 2 partly cloudy, 1 sunny, and 1 cloudy day in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Angra dos Reis.