February in Petropolis is the hottest month of the year. In February, the weather in Petropolis is typically hot. Average daily high temperature in February is about 28 degrees above zero. On average, Petropolis has 21 rainy, 7 sunny, and 1 partly cloudy day in February. The rains are usually heavy. February as well as January, March, April, and November is considered the most uncomfortable time to visit Petropolis.