Porto Alegre Weather in October

Thinking of visiting Porto Alegre in October? Expect high temperatures reaching 26°C (79°F) during the day, dropping to 15°C (59°F) at night, and be prepared for the wettest month of the year.

Rainfall in Porto Alegre in October

Expect the heaviest rain of the year this month, often arriving in intense bursts. A poncho is essential for keeping dry. On average, there are about 16 days with rain during this month, averaging 172 mm (6.8 in). Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Porto Alegre in October

Daytime highs in Porto Alegre in October reach 26°C (79°F), with nights around 15°C (59°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 15°C (59°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Porto Alegre in October

The city usually sees around 181 hours of sunlight, indicating a moderately sunny period.

Wind Speed in Porto Alegre in October

October has wind speeds averaging 1 m/s (2 knots). You can expect very gentle conditions with light air movement on typical days. Since this is an average, daily weather varies from perfectly still moments to some breezier days.

If you're a fan of comfortable temperatures and drier conditions, October is a great time to visit.

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For a detailed overview over the year and the best time to visit Brazil, check out our Porto Alegre's climate page.

Porto Alegre Temperature in October

Min Temperature 15°C (59°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 54%  

Precipitation 172 mm (6.8 in)  

Rainy days 16 days  

Humidity 74%  

Windspeed 1 m/s (2 knots)  

Sunshine 181 hours  

Percentage Sunshine  

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Porto Alegre typically stay consistent throughout October, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°F).

Average temperatures in October

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Daily Historical Precipitation

49-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in October

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Historical weather for Porto Alegre in October

Browse day-by-day weather records for Porto Alegre spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Porto Alegre historical weather extremes in October

Based on 25 years of weather observations (2000-2025), these are the most extreme conditions recorded in Porto Alegre.

• On October 12, 2019, temperatures climbed to 39°C (102°F), marking the warmest October day on record.
• Porto Alegre experienced its chilliest October day on October 3, 2020, reaching only 15°C (59°F).
• The coldest night in October in Porto Alegre was on October 8, 2008, with a minimum of 7°C (45°F).
• The heaviest October precipitation occurred on October 17, 2016, when 71 mm (2.8 in) of precipitation fell.

What to Wear in Porto Alegre in October

Warm but pleasant conditions in Porto Alegre in October. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Porto Alegre in October

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Brazil, check out our Porto Alegre's climate page.

More climate data for Porto Alegre

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Porto Alegre climate overview or explore weather in Brazil.