Sao Paulo

Brazil Weather in September

Average temperatures, rainfall, sunshine and the best places to visit in Brazil in September.

Considering a trip to Brazil this September and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Brazil in September

Brazil has a wide variety of climate types. During September, you can expect temperatures that range from pleasant to very hot and precipitation levels ranging from almost none to heavy.

Temperatures

The average maximum daytime temperatures vary from pleasant in Cassino at 18°C (64°F) to very hot in Teresina at 38°C (100°F). Nighttime temperatures generally drop to 24°C (75°F) in Teresina and 14°C (57°F) in Cassino.

For specific regional insights in Brazil, refer to the map provided below.

Precipitation

In September, precipitation varies across different areas. From almost no rainfall in Sousa with an average of 1.3 mm (0.1 in) to heavy rainfall in Praia Grande with 204 mm (8 in).

Average sunshine

Sunshine levels are moderate in most locations. Rio de Janeiro typically sees 144 hours of sunlight, creating comfortable conditions that aren't too bright or too dim. Looking for something sunnier? Our weather planner helps you discover destinations with more reliable sunshine.

Explore Brazil by month

Pick a month to see the average temperature, rainfall and sunshine in Brazil - and find the best time to visit. (based on Rio de Janeiro)

Best Places to Visit in Brazil in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Brazil.

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 Brazil

What is the weather like in September for some of the most popular destinations in Brazil?

Temperature range in Brazil (September)

Precipitation variation in Brazil (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 excellent 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

Sao Paulo

In September Sao Paulo generally has high temperatures with maximum daytime temperatures around 26°C (79°F), minimum nighttime temperatures around 15°C (59°F) and high monthly rainfall. So on average the conditions are very good that month.

August
September
October
Max temperature
25°C (77°F)
26°C (79°F)
27°C (81°F)
Min temperature
13°C (55°F)
15°C (59°F)
16°C (61°F)
Monthly sun hours
175 hours
152 hours
153 hours
Monthly rainfall
46 mm (1.8 in)
102 mm (4 in)
126 mm (5 in)
Monthly rainy days
11 days
13 days
18 days
Weather conditions

Florianópolis

In September Florianópolis generally has high temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 16°C (61°F) and high monthly rainfall. So on average the conditions are very good that month.

August
September
October
Max temperature
22°C (72°F)
22°C (72°F)
24°C (75°F)
Min temperature
14°C (57°F)
16°C (61°F)
18°C (64°F)
Monthly sun hours
158 hours
130 hours
145 hours
Monthly rainfall
92 mm (3.6 in)
147 mm (5.8 in)
137 mm (5.4 in)
Monthly rainy days
14 days
19 days
20 days
Weather conditions

Gramado

In September Gramado generally has pleasant temperatures with maximum daytime temperatures around 22°C (72°F), minimum nighttime temperatures around 11°C (52°F) and heavy monthly rainfall. So on average the conditions are good that month.

August
September
October
Max temperature
21°C (70°F)
22°C (72°F)
24°C (75°F)
Min temperature
9°C (48°F)
11°C (52°F)
13°C (55°F)
Monthly rainfall
144 mm (5.7 in)
187 mm (7.4 in)
222 mm (8.7 in)
Monthly rainy days
16 days
18 days
18 days
Weather conditions

Fortaleza

In September Fortaleza generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and low monthly rainfall. So on average the conditions are excellent that month.

August
September
October
Max temperature
31°C (88°F)
31°C (88°F)
31°C (88°F)
Min temperature
24°C (75°F)
25°C (77°F)
25°C (77°F)
Monthly sun hours
292 hours
283 hours
296 hours
Monthly rainfall
13 mm (0.5 in)
8 mm (0.3 in)
10 mm (0.4 in)
Monthly rainy days
12 days
14 days
10 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Brazil.

Popular cities in September

Day & night temperatures, rainfall and average weather in Brazil 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)
Florianópolis 22°C (72°F) 16°C (61°F) 147 mm (5.8 in)
Sao Paulo 26°C (79°F) 15°C (59°F) 102 mm (4 in)
Fortaleza 31°C (88°F) 25°C (77°F) 8 mm (0.3 in)
Salvador 27°C (81°F) 24°C (75°F) 78 mm (3.1 in)
Foz do Iguaçu 28°C (82°F) 16°C (61°F) 163 mm (6.4 in)

Brazil weather in September: frequently asked questions

What is the weather like in Brazil in September?

In September, Brazil generally has excellent weather conditions. Rio de Janeiro sees daytime temperatures near 27°C (81°F), with nights cooling to roughly 19°C (66°F).

What is the average temperature in Brazil in September?

Daytime temperatures in Rio de Janeiro peak at roughly 27°C (81°F) in September, dropping to about 19°C (66°F) overnight.

Does 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 Brazil.

Is September a Good Time to Visit Brazil?

We consider September to be one of the best times to travel to Brazil. Typically, the climate in Rio de Janeiro is excellent. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Brazil is in May, June, July, August and September with generally excellent weather in Rio de Janeiro. In contrast, January and December tend to have less favorable weather conditions.

Interested in more climate information?

We have much more information about the climate in Brazil.

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.

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