In December, Petropolis typically sees daytime highs of 29.7°C and overnight lows around 20.3°C. Compared to the annual average high of 28.2°C, December runs +1.5°C.
December in Petropolis averages a daytime high of 29.7°C and an overnight low of 20.3°C.
December runs +1.5°C compared to Petropolis's annual average high of 28.2°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 29.7°C and cooler evenings around 20.3°C.