Porto Alegre Weather in August
With daytime temperatures of 22°C (72°F) and nighttime lows of 11°C (52°F), August in Porto Alegre brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 123 mm (4.8 in) falls on average.
Rainfall in Porto Alegre in August
Past climate data indicates that roughly 16 days will see rain, totalling around 123 mm (4.8 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Porto Alegre in August
August in Porto Alegre brings high temperatures, with highs of 22°C (72°F) and nights around 11°C (52°F). August is known for being in the winter season. This kind of day-to-night contrast is typical for this time of year. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Porto Alegre in August
With about 147 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.
Wind Speed in Porto Alegre in August
August 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 favor pleasant temperatures and minimal rainfall, August is one of the best months to visit Porto Alegre.
Check the conditions for any month of the year.
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 August
Min Temperature
11°C (52°F)
Max Temperature
22°C (72°F)
Chance of Rain
54%
Precipitation
123 mm (4.8 in)
Rainy days
16 days
Humidity
79%
Windspeed
1 m/s (2 knots)
Sunshine
147 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Porto Alegre typically stay consistent throughout August, with daily highs averaging around 22°C (72°F). Nights are cool, with lows typically ranging from 11°C (52°F) to 13°C (55°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Porto Alegre in August
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.
Porto Alegre historical weather extremes in August
Based on 49 years of weather observations in Porto Alegre between 1976 and 2025, these are the recorded extremes.
- The warmest day in August was on August 26, 1982, with a maximum of 35°C (95°F).
- The lowest overnight temperature recorded in August was 0°C (32°F) (August 29, 1990).
Best Places in Brazil in August
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Porto Alegre in August
For Porto Alegre in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Porto Alegre in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Brazil, check out our Porto Alegre's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Porto Alegre climate overview or explore weather in Brazil.
