Weather in September 2025

Porto Alegre weather in September 2025

°C °F

The average weather in Porto Alegre in September

The temperatures in Porto Alegre in September are comfortable with low of 13°C and and high up to 23°C.

You can expect rain for roughly half of the month of September in Porto Alegre. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.

Our weather forecast can give you a great sense of what weather to expect in Porto Alegre in September 2025.

If you’re planning to visit Porto Alegre in the near future, we highly recommend that you review the 14 day weather forecast for Porto Alegre before you arrive.

Temperatures
23° / 13°
Rainy Days
8
Snowy Days
0
Dry Days
22
Rainfall
187
mm
Sun Hours
8.8
Hrs

Explore the weather in Porto Alegre in other months

Porto Alegre annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 31° / 20° 8 23 0 161 mm
Ok
February 31° / 20° 8 21 0 155 mm
Ok
March 28° / 18° 7 24 0 130 mm
Good
April 26° / 16° 6 25 0 108 mm
Perfect
May 22° / 13° 6 25 0 155 mm
Good
June 19° / 11° 6 24 0 169 mm
Good
July 19° / 11° 7 24 0 204 mm
Ok
August 22° / 12° 6 25 0 182 mm
Good
September 23° / 13° 8 22 0 187 mm
Good
October 25° / 15° 8 23 0 194 mm
Good
November 27° / 17° 6 24 0 141 mm
Perfect
December 30° / 19° 7 24 0 134 mm
Ok

Weather in Porto Alegre in September - FAQ

What is the average temperature in Porto Alegre in September?
The average temperature in Porto Alegre in September is 13/23° C.
What is the chance of rain in Porto Alegre in September?
On average, there are 8 rainy days in Porto Alegre during September.
Weather wise, is September a good time to visit Porto Alegre?
The weather in Porto Alegre in September is good.
Can it snow in Porto Alegre in September?
On average, there are 0 snowy days in Porto Alegre in September.
More about the weather in Porto Alegre