In December, the weather in Olho dÁgua das Cunhãs is typically hot. Average daily high temperature in December is about 31 degrees above zero. On average, Olho dÁgua das Cunhãs has 26 rainy, 3 cloudy, and 2 sunny days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Olho dÁgua das Cunhãs.