Weather in Porto Alegre in January 2025
- January is usually the hottest month of the year in Porto Alegre;
Average weather
Average temperature in Porto Alegre in January
The temperature in January is +32°C on average, with a range between a maximum of +37°C during the day and a minimum of +19°C at night.
The average maximum temperature goes down 6% by the end of the month, compared with the beginning of the month, from +35°C to +34°C.
Is Porto Alegre warm or cold in January?
Porto Alegre is typically warm in January.
Maximum temperatures go up compared to the previous month from +29°C to +30°C. The minimum temperature also goes up from +20°C to +21°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
January is the hottest month in Porto Alegre, here is the comparison with other months:
Climate in Porto Alegre in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +30°C | +29°C | ||||
| Min. temperature | ||||||
| +12°C | +13°C | +12°C | ||||
| Max. temperature | ||||||
| +39°C | +39°C | +40°C | ||||
| Rainfall | ||||||
| 115 mm | 127 mm | 120 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 2 m/s | ||||
| Humidity | ||||||
| 75% | 76% | 78% | ||||
| Air pressure | ||||||
| 1010 HPa | 1010 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 8 | 6 | 5 | ||||
| Cloudy days | ||||||
| 6 | 5 | 4 | ||||
| Rainy days | ||||||
| 15 | 18 | 17 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
January weather is still as ok as in December. It’s getting warmer as January arrives. The average maximum temperature goes up from +29°C to +30°C during the day. Prepare for more rain. Average rainfall goes from 115 mm to 127 mm. Humidity rises from 75% to 76%. The average wind speed doesn’t change much during January, staying around 3 m/s. The days becoming less sunny, going from 8 sunny days in December to 6 in January.
February brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Porto Alegre is gradually decreasing during January, going from 5 m/s to 3 m/s over the course of the month.
Rain
How was the weather last January in Porto Alegre?
Climate Change over Years
The climate in Porto Alegre in January has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+23°C) and the highest in 2012 (+26°C). The driest year was 2004 with only 1129 mm of rainfall, and the wettest year was 1998 with 2041 mm.
FAQ
Is January a good time to visit Porto Alegre?
Can you sunbathe in Porto Alegre in January?
Is Porto Alegre rainy in January?
Is it sunny in Porto Alegre in January?
Other cities in Brazil
Monthly weather in Porto Alegre
Source of the data
For this page, we’ve looked at the typical weather in Porto Alegre, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.