Rio de Janeiro

Rio de Janeiro State Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Rio de Janeiro State, Brazil in September.

Planning a trip to Rio de Janeiro State, Brazil this September? Here's what you need to know about the weather:

What to Expect in Rio de Janeiro State in September

Rio de Janeiro State, Brazil is a region in Brazil. September in Rio de Janeiro State generally has warm temperatures, with precipitation levels ranging from moderate to heavy.

Temperatures

The average maximum temperatures are warm and range 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.

To learn more about the conditions in specific areas of Rio de Janeiro State, Brazil, check out the map below.

Precipitation

In September, precipitation varies across different areas. From moderate rainfall in Arraial do Cabo with an average of 56 mm (2.2 in) to heavy rainfall in Paraty with 186 mm (7.3 in).

Average sunshine

Sunshine is fairly consistent across many areas. Rio de Janeiro receives about 144 hours of sunlight in September, providing a good balance between sunny spells and cloud cover. If you're after more sunshine hours, take a look at our weather planner for other sun-rich destinations worldwide.

Explore Rio de Janeiro State 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.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Rio de Janeiro State

What is the weather like in September for some of the most popular destinations in Rio de Janeiro State, Brazil?

Temperature range in Rio de Janeiro State (September)

Precipitation variation in Rio de Janeiro State (September)

Rio de Janeiro

In September Rio de Janeiro generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 19°C (66°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
27°C (81°F)
27°C (81°F)
28°C (82°F)
Min temperature
18°C (64°F)
19°C (66°F)
21°C (70°F)
Monthly sun hours
182 hours
144 hours
154 hours
Monthly rainfall
45 mm (1.8 in)
85 mm (3.3 in)
104 mm (4.1 in)
Monthly rainy days
9 days
12 days
18 days
Weather conditions

Búzios

In September Búzios generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 20°C (68°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Min temperature
20°C (68°F)
20°C (68°F)
21°C (70°F)
Monthly rainfall
37 mm (1.5 in)
62 mm (2.4 in)
79 mm (3.1 in)
Monthly rainy days
10 days
12 days
19 days
Weather conditions

Paraty

In September Paraty generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 18°C (64°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

August
September
October
Max temperature
23°C (73°F)
24°C (75°F)
25°C (77°F)
Min temperature
17°C (63°F)
18°C (64°F)
19°C (66°F)
Monthly sun hours
104 hours
80 hours
74 hours
Monthly rainfall
98 mm (3.9 in)
186 mm (7.3 in)
228 mm (9 in)
Monthly rainy days
9 days
11 days
16 days
Weather conditions

Cabo Frio

In September Cabo Frio generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 20°C (68°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

August
September
October
Max temperature
24°C (75°F)
25°C (77°F)
25°C (77°F)
Min temperature
20°C (68°F)
20°C (68°F)
21°C (70°F)
Monthly rainfall
36 mm (1.4 in)
59 mm (2.3 in)
70 mm (2.8 in)
Monthly rainy days
10 days
12 days
19 days
Weather conditions

Ilha Grande

In September Ilha Grande generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 19°C (66°F) and high monthly rainfall. So on average the conditions are pleasant that month.

August
September
October
Max temperature
24°C (75°F)
24°C (75°F)
25°C (77°F)
Min temperature
19°C (66°F)
19°C (66°F)
20°C (68°F)
Monthly rainfall
60 mm (2.4 in)
104 mm (4.1 in)
120 mm (4.7 in)
Monthly rainy days
9 days
11 days
16 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Rio de Janeiro State, in Brazil.

Popular cities in September

Day & night temperatures, rainfall and average weather in Rio de Janeiro State in September.

City Weather Day temp Night temp Rainfall
Rio de Janeiro 27°C (81°F) 19°C (66°F) 85 mm (3.3 in)
Paraty 24°C (75°F) 18°C (64°F) 186 mm (7.3 in)
Búzios 25°C (77°F) 20°C (68°F) 62 mm (2.4 in)
Cabo Frio 25°C (77°F) 20°C (68°F) 59 mm (2.3 in)
Ilha Grande 24°C (75°F) 19°C (66°F) 104 mm (4.1 in)
Arraial do Cabo 24°C (75°F) 21°C (70°F) 56 mm (2.2 in)

Rio de Janeiro State weather in September: frequently asked questions

What is the weather like in Rio de Janeiro State, Brazil in September?

Expect perfect weather across Rio de Janeiro State, Brazil in September. The popular destination of Rio de Janeiro averages 27°C (81°F) by day and 19°C (66°F) at night during this month.

What is the average temperature in Rio de Janeiro State, Brazil in September?

Rio de Janeiro averages a daytime maximum of 27°C (81°F) in September, with overnight lows close to 19°C (66°F).

Does Rio de Janeiro State, Brazil get a lot of rain in September?

Not particularly. Rio de Janeiro averages just 85 mm (3.3 in) of rain in September, making it a mostly dry month for Rio de Janeiro State, Brazil.

Is September a Good Time to Visit Rio de Janeiro State, Brazil?

We believe that September is one of the best times to visit Rio de Janeiro State, Brazil with overall perfect weather in Rio de Janeiro. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Rio de Janeiro State, Brazil is in May, June, July, August and September with generally perfect weather in Rio de Janeiro. On the other hand, the weather in January and December tend to be poor.

Interested in more climate information?

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

Weather and climate has detailed information for every country in the world. Are you going to Brazil? Get detailed historical weather averages for many cities in Brazil.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.