Porto Alegre Weather in January
January in Porto Alegre brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 21°C (70°F). Rainfall is on the higher side this month, averaging around 141 mm (5.6 in), so keep a rain jacket handy.
Rainfall in Porto Alegre in January
Typically around 19 days of rainfall are expected, averaging 141 mm (5.6 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Porto Alegre in January
January in Porto Alegre brings typical temperatures with highs around 31°C (88°F) and lows of 21°C (70°F). It's usually most comfortable outside during the morning and later in the day. At 21°C (70°F) overnight, nights are warm enough to sit outside comfortably in light clothing. Bear in mind, these are average temperatures, and it can get even warmer on particular days. Make sure to choose clothing that accommodates the warmth.
Sunshine in Porto Alegre in January
The month enjoys around 228 hours of sunshine, creating mostly sunny days with good weather conditions.
Wind Speed in Porto Alegre in January
Average wind conditions reach 1 m/s (2 knots) in January. This creates generally peaceful weather with subtle air movement. Remember this is an average: some days are windless while others have noticeable or very gentle breezes.January in Porto Alegre can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
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 January
Min Temperature
21°C (70°F)
Max Temperature
31°C (88°F)
Chance of Rain
63%
Precipitation
141 mm (5.6 in)
Rainy days
19 days
Humidity
71%
Windspeed
1 m/s (2 knots)
Sunshine
228 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2026)
Based on our historical records, temperatures in Porto Alegre typically stay consistent throughout January, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 21°C (70°F).
Average temperatures in January
Daily Historical Precipitation
50-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Porto Alegre in January
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 January
Based on weather observations in Porto Alegre between 2004 and 2025, these are the recorded extremes during January.
- The warmest day in January was on January 16, 2022, with a maximum of 39°C (102°F).
- The lowest daytime temperature in January was 18°C (64°F), recorded on January 3, 2009.
- Porto Alegre registered its coldest January night on January 27, 2005, with temperatures dropping to 11°C (52°F).
Best Places in Brazil in January
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in January →
perfect weather
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tolerable
unpleasant
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What to Wear in Porto Alegre in January
Warm weather calls for comfortable, breathable clothing in January. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Porto Alegre in January
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.
