Porto Alegre Weather & Climate: Best Time to Visit

The climate in Porto Alegre experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a very warm 31°C (88°F) in January, the warmest time of the year, to a pleasant 20°C (68°F) during cooler months like July.

At night, you can expect temperatures ranging from 21°C (70°F) in January to around 10°C (50°F) during July.

Check out our detailed temperature page for more information.

Temperature ranges by month

Porto Alegre is known for its substantial rainfall, with annual precipitation reaching 1590 mm (63 in). Year-round, Porto Alegre has a balanced climate with minimal variation in precipitation. The difference between the wettest month, October, with 172 mm (6.8 in), and the driest month, May, with 110 mm (4.3 in), is minimal. For more details, please visit our Porto Alegre Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Porto Alegre. While December receives considerable daily sunshine with up to 7.8 hours, June marks the darkest time of the year, where sunshine is scarce with only 3.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Porto Alegre.

The city experiences its highest humidity in June, reaching 82%. In December, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed over the year ranges from () in April, May, June and July to 1 m/s (2 knots) in January, February, March, August, September, October, November and December. What does this mean?

The mean monthly wind speed over the year (meters per second)