The climate in Porto Alegre during September can be summarized as mild and wet.
September is in the spring in Porto Alegre and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 21°C (70°F), whilst at night 13°C (55°F) is normal.
|Daytime temperature||21.2°C 70.2°F|
|Nightly temperature||12.8°C 55°F|
|Average temperature||17°C 62.6°F|
|Daily sunshine||5.3 hrs|
|Avg rainfall||141 mm 5.6 ins|
|Rainy days||18 days|
|Sea temperature||16.7°C 62°F|
|Windspeed||9.7kph 6 mph|
On average September is the wettest month of the year in Porto Alegre with around 141mm 5.6 inches of rain making it a wet time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Porto Alegre in September 2022.
|Hottest month:||January||29.2°C 84.6°F|
|Driest month:||April||92mm 3.6ins|
|Coldest month:||June||18.6°C 65.5°F|
|Wettest month:||September||141mm 5.6ins|