Temperature in Rio de Janeiro State in September

Daytime highs, nighttime lows and the warmest cities in Rio de Janeiro State, Brazil this September.

Rio de Janeiro State, Brazil, a region in Brazil, experiences high average maximum daytime temperatures in September, ranging from 24°C (75°F) in Trindade to 29°C (84°F) in Campos dos Goytacazes. Nighttime temperatures generally drop to 19°C (66°F) in Campos dos Goytacazes and 19°C (66°F) in Trindade.

What is the temperature of the different cities in Rio de Janeiro State, Brazil in September?

Explore the map below to discover average September temperatures at the top destinations in Rio de Janeiro State. For a deeper dive, simply click on any destination dot.

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Check the conditions for any month of the year.

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For a detailed overview over the year and the best time to visit Rio de Janeiro State, check out our Rio de Janeiro State's climate page.

See also: Rio de Janeiro State weather by month.

Best Places to Visit in Rio de Janeiro State in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Rio de Janeiro State.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in Rio de Janeiro State

Rio de Janeiro State temperatures in September: frequently asked questions

How hot does it get in Rio de Janeiro State, Brazil in September?

Daytime temperatures in Rio de Janeiro typically peak at 27°C (81°F) in September, putting it in the high range.

How cold does it get at night in Rio de Janeiro State, Brazil in September?

After dark, Rio de Janeiro cools to about 19°C (66°F) on an average September night.

What is the warmest city in September in Rio de Janeiro State, Brazil?

From a thorough analysis of our records, Campos dos Goytacazes clearly dominates in terms of high temperatures. The city witnesses daytime temperatures hovering around 29°C (84°F), and evenings that remain near 19°C (66°F).

What is the coldest city in September in Rio de Janeiro State, Brazil?

Our database indicates that in September, Trindade is the city with the coolest temperatures in Rio de Janeiro State, Brazil. You can expect daytime highs of 24°C (75°F) and nighttime lows close to 19°C (66°F).

How much sun does Rio de Janeiro State, Brazil get in September?

Most cities enjoy a balanced amount of sunshine, with around 144 hours of sunlight anticipated in Rio de Janeiro. This ensures the days are neither too dim nor excessively sunny.

What is the water temperature in September?

The water temperature averages approximately 21°C (70°F) in Rio de Janeiro this month, good for swimming and cooling off.

Interested in more climate information?

We have much more information about the climate in Rio de Janeiro State.

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