Petrópolis Temperature by Month

Petrópolis, Rio de Janeiro State, Brazil has a consistently comfortable climate year-round, with daytime highs averaging 28°C (82°F). Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Year-round, Petrópolis experiences a consistently comfortable climate. Maximum daytime temperatures range from a very warm 31°C (88°F) in February to a comfortable 25°C (77°F) in the coolest month, July. Nighttime temperatures range from 21°C (70°F) in February to 15°C (59°F) in July.

The chart below illustrates the average maximum day and minimum night temperatures in Petrópolis by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. February, the city's warmest month, sees 202 hours of sunshine.

The chart below shows the average temperature throughout the year:

Petrópolis's average annual maximum temperature is 28°C (82°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Petrópolis, July is the coolest month, with average highs of 25°C (77°F) and humidity around 77%, considered high. In February, the warmest month, temperatures average 31°C (88°F) with 79% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained, so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.

For more on Petrópolis's weather, including monthly rainfall, sunshine hours, and humidity, visit our Petrópolis climate page.