Brazil in september: average Weather, Temperature and Climate, Where to go?
Weather in Brazil in september 2025
Below, you have access to the weather forecast for september for most popular cities in Brazil. These predictions are statistics for the month of september from weather reports for many years. The percentage indicates the possibility of having the weather indicated.
Average weather in september in Rio de Janeiro
good weather UV index: 6
Weather at 6am
70°F
Clear/Sunny
44% of time
22%
20%
7%
Weather at 12pm
81°F
Clear/Sunny
52% of time
21%
18%
6%
Weather at 6pm
74°F
Clear/Sunny
46% of time
25%
17%
7%
Weather at 3am
70°F
46%
21%
17%
9%
More information about the weather in Rio de Janeiro in september
Where to go in Brazil in september?
Where to go in Brazil in september: destination map
Where to go in each region in september?
| Central-West Region of Brazil (Brasilia, Cuiabá, Campo Grande...) | 90°F to 103°F | 2 à 5 days | good weather* | |
| North Region of Brazil (Belem, Manaus, Boa Vista...) | 90°F to 101°F | 3 à 13 days | 83°F to 85°F | good weather* |
| Northeast Region of Brazil (Fortaleza, Teresina, Recife...) | 79°F to 101°F | 0 à 7 days | 79°F to 83°F | good weather* |
| South Region of Brazil (Curitiba, Porto Alegre, Florianopolis (Santa Catarina Island)...) | 67°F to 86°F | 5 à 8 days | 58°F to 67°F | good weather |
| Southeast Region of Brazil (Rio de Janeiro, Belo Horizonte, Sao Paulo...) | 74°F to 94°F | 2 à 7 days | 68°F to 77°F | good weather* |
Where should you go in Brazil in september when it comes to the weather?
Remember:
The climate in Brazil in september ranges from perfect to good depending on the region and city.
In september the weather is perfect in Brazil, but only in a few cities: in Brasilia and Belo Horizonte. In these places, all the conditions are met for enjoy a maximum your trip: the sun is guaranteed, rainfall is scarce and the humidity is endurable. It is therefore the ideal month to travel to these cities!
Please note that the weather is still favorable in Fortaleza, Paraty, Ilha Grande, Sao Paulo, Porto Alegre, Curitiba, Cuiabá, Florianopolis (Santa Catarina Island), Rio de Janeiro, Salvador de Bahia and Fernando de Noronha. Around here, temperatures are still suitable and allow you to visit - and why not do a bit of sunbathing in the sun!
If you do not go to spend your time in a lounger by the pool, but, for example to discover the heritage, the cities of Jijoca de Jericoacoara, Recife, Manaus, Belem and Porto Velho have a OK but just acceptable weather for it in september. Eventually, avoid going in Alter do Chão in september because the climate is rather unfavorable.
Climate in Brazil in september
Climate in Rio de Janeiro in september
In september, the mean temperature in Rio de Janeiro is 76°F (maximum temperature is 81°F and minimum temperature is 70°F). The climate quite comfortable in that locality in september. With 4.4in over 7 days, you will experience some showers throughout your vacations. But this is pretty moderate and it is only of temporary showers.
With a good weather, september is a good time to go in this city.
| September | |||
| Average temperature | 76°F | ||
| Highest temperature | 81°F | ||
| Lowest temperature | 70°F | ||
| Sea temperature | 71°F | ||
| Rainfall | 4.4in | ||
| Number of days with rainfall | 7 day(s) (22%) | ||
| Humidity | 85% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 34% | ||
| Length of day | 11:58 | ||
| Our opinion at whereandwhen.net | good |
Climate in Belo Horizonte in september
In the month of september, maximum temperature is 85°F and minimum temperature is 63°F (for an average temperature of 74°F). The climate quite nice in this location in september. With 3.1in over 4 days, rainfall can happen throughout your holidays. But this is pretty moderate and it will not be continuous.
With a perfect weather, september is a recommended month to go in Belo Horizonte in Brazil.
| September | |||
| Average temperature | 74°F | ||
| Highest temperature | 85°F | ||
| Lowest temperature | 63°F | ||
| Rainfall | 3.1in | ||
| Number of days with rainfall | 4 day(s) (15%) | ||
| Humidity | 86% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 24% | ||
| Length of day | 11:59 | ||
| Our opinion at whereandwhen.net | good |
Climate in Brasilia in september
In the month of september, maximum temperature is 90°F and minimum temperature is 68°F (for an average temperature of 79°F). The climate is very warm there in september. With barely 1.9in over 3 days, rain may be scarce throughout your vacations.
With a perfect climate, september is a recommended month to go in Brasilia.
| September | |||
| Average temperature | 79°F | ||
| Highest temperature | 90°F | ||
| Lowest temperature | 68°F | ||
| Rainfall | 1.9in | ||
| Number of days with rainfall | 3 day(s) (11%) | ||
| Humidity | 58% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 14% | ||
| Length of day | 12:01 | ||
| Our opinion at whereandwhen.net | perfect |
Climate in Curitiba in september
In september, the mean temperature in Curitiba is 67°F (maximum temperature is 76°F and minimum temperature is 59°F). The climate quite pleasant in this city in this month. With 5.6in over 7 days, rain may occur throughout your journey. But this is moderate and it is only of temporary showers.
With a good climate, the month of september is a recommended month to go in this city in Brazil.
| September | |||
| Average temperature | 67°F | ||
| Highest temperature | 76°F | ||
| Lowest temperature | 59°F | ||
| Rainfall | 5.6in | ||
| Number of days with rainfall | 7 day(s) (23%) | ||
| Humidity | 94% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 48% | ||
| Length of day | 11:56 | ||
| Our opinion at whereandwhen.net | good |
Climate in Florianopolis (Santa Catarina Island) in september
In september, maximum temperature is 72°F and minimum temperature is 63°F (for an average temperature of 68°F). The climate quite comfortable in this city in this month. With 6.5in over 7 days, you risk getting wet slightly for your journey. But this is pretty reasonably and it is only of temporary showers.
With good weather conditions, the month of september is an advisable month to go there.
| September | |||
| Average temperature | 68°F | ||
| Highest temperature | 72°F | ||
| Lowest temperature | 63°F | ||
| Sea temperature | 67°F | ||
| Rainfall | 6.5in | ||
| Number of days with rainfall | 7 day(s) (22%) | ||
| Humidity | 89% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 45% | ||
| Length of day | 11:56 | ||
| Our opinion at whereandwhen.net | good |
All cities in Brazil in september
| Rio de Janeiro in september | good weather |
| Belo Horizonte in september | good weather |
| Brasilia in september | perfect weather |
| Curitiba in september | good weather |
| Florianopolis (Santa Catarina Island) in september | good weather |
| Fortaleza in september | perfect weather |
| Porto Alegre in september | good weather |
| Recife in september | good weather |
| Sao Paulo in september | good weather |
| Teresina in september | good weather |
| Belem in september | good weather |
| Boa Vista in september | tolerable weather |
| Campo Grande in september | good weather |
| Cuiabá in september | tolerable weather |
| Fernando de Noronha in september | good weather |
| Guarapari in september | perfect weather |
| João Pessoa in september | good weather |
| Manaus in september | good weather |
| Paraty in september | good weather |
| Petropolis in september | good weather |
| Ajuruteua (Bragança - Pará) in september | good weather |
| Alter do Chão in september | good weather |
| Arraial d'Ajuda in september | good weather |
| Bonito (Mato Grosso do Sul) in september | good weather |
Weather data for Brazil in september:
Weather data for Brazil in september is derived from an average of the weather forecast since 2009 in Brazil. There is a margin of error and these forecasts are to be considered as general information only. The weather in Brazil can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Brazil.