Brazil weather in September

Thinking about venturing to Brazil this September and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Brazil in September?

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

The average maximum daytime temperatures vary from pleasant in Cassino at 18°C to very warm in Teresina at 38°C. Nighttime temperatures generally drop to 24°C in Teresina and 14°C in Cassino.

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

For a closer look at September's conditions in Brazil, see the map below. For a more detailed look at Brazil's yearly weather, check out our Brazil climate page.

Where to go in Brazil in September

Find the average weather conditions in September for the most popular destinations in Brazil on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Brazil

What is the weather like in September for the 5 most popular destinations in Brazil?

Average weather in Rio de Janeiro

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

Rio de Janeiro
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
27°C 
18°C 
182 hours 
45 mm 
9 days 
27°C 
19°C 
144 hours 
85 mm 
12 days 
October   >> October
>>  
28°C 
21°C 
154 hours 
104 mm 
18 days 
Climate in Rio de Janeiro

Average weather in Sao Paulo

In September Sao Paulo generally has high temperatures with maximum daytime temperatures around 26°C, minimum nighttime temperatures around 15°C and high monthly rainfall. So on average the conditions are pleasant that month.

Sao Paulo
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
25°C 
13°C 
175 hours 
46 mm 
11 days 
26°C 
15°C 
152 hours 
102 mm 
13 days 
October   >> October
>>  
27°C 
16°C 
153 hours 
126 mm 
18 days 
Climate in Sao Paulo

Average weather in Florianópolis

In September Florianópolis generally has high temperatures with maximum daytime temperatures around 22°C, minimum nighttime temperatures around 16°C and high monthly rainfall. So on average the conditions are pleasant that month.

Florianópolis
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
22°C 
14°C 
158 hours 
92 mm 
14 days 
22°C 
16°C 
130 hours 
147 mm 
19 days 
October   >> October
>>  
24°C 
18°C 
145 hours 
137 mm 
20 days 
Climate in Florianópolis

Average weather in Gramado

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

Gramado
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
21°C 
9°C 
144 mm 
16 days 
22°C 
11°C 
187 mm 
18 days 
October   >> October
>>  
24°C 
13°C 
222 mm 
18 days 
Climate in Gramado

Average weather in Fortaleza

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

Fortaleza
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
31°C 
24°C 
292 hours 
13 mm 
12 days 
31°C 
25°C 
283 hours 
8 mm 
14 days 
October   >> October
>>  
31°C 
25°C 
296 hours 
10 mm 
10 days 
Climate in Fortaleza

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

Is September the best 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 perfect. 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 perfect weather in Rio de Janeiro. In contrast, January and December tend to have unpleasant weather conditions.

Interested in more climate information?

We have much more information about the climate in Brazil. Interested in the weather conditions in a specific month? Select the month below.

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  • 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 climate conditions. Find out where to go with our weather planner.