Itatiaia Temperature by Month

The average annual maximum temperature in Itatiaia, Rio de Janeiro State, Brazil is 26°C (79°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Itatiaia compares to cities worldwide.

The temperature in Itatiaia changes very little across the seasons, maintaining a similar climate throughout the year. Maximum daytime temperatures range from a comfortable 23°C (73°F) in July to a comfortable 29°C (84°F) in February. Nighttime lows range from 18°C (64°F) in February to 11°C (52°F) in July.

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

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.

The chart below shows the average temperature throughout the year:

Itatiaia's average annual maximum temperature is 26°C (79°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

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.

Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.

Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.

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