Petrópolis Weather & Climate: Best Time to Visit

The climate in Petrópolis remains fairly constant, offering comfortable temperatures throughout the year. Average daytime temperatures reach a very warm 31°C (88°F) in February. In July, the coolest month of the year, temperatures drop to a comfortable 25°C (77°F).

At night, temperatures range from around 21°C (70°F) in February to 15°C (59°F) in July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Petrópolis is known for its substantial rainfall, with annual precipitation reaching 1998 mm (79 in). Petrópolis can be quite wet during January, receiving approximately 323 mm (13 in) of precipitation over 22 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 47 mm (1.9 in) of precipitation spread across 10 rainy days. For more details, please visit our Petrópolis Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Petrópolis experiences moderate variation in sunshine hours across the seasons. With 7.1 hours daily sunshine in January, it dips to 4.8 hours in September, offering a balanced mix of sunny and overcast days.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Petrópolis.

The city experiences its highest humidity in March, reaching 80%. In July, the humidity drops to its lowest level at 77%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year