Porto Alegre weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Good
Best time to visit: February – December
What is the weather like in Porto Alegre in January?
In January, Porto Alegre is hot: daytime highs average 29 °C, and even at night it stays warm at around 21 °C. The sea averages 25.9 °C – pleasant for swimming. The sun shines for around 8 hours a day. Rain is frequent, with about 14 rainy days and 130 mm in total. On about 12 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, January is a good month for a holiday in Porto Alegre.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 72 | 61 | 65 |
| Day | 28° | 29° | 29° |
| Night | 19° | 21° | 21° |
| Sea | 24° | 26° | 26° |
| Sun | 8 h | 8 h | 7 h |
| Rain days | 12 | 14 | 12 |
More details for January
- Daylight
- 13 h 53 min05:37 – 19:30
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 24 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 55 %on averageAll months
- Hot days
- 12 days30 °C or moreAll months
- Time zone
- UTC−3America/Sao_Paulo
How the score comes together
- Temperatureweight 50 %73 %
- Sunshineweight 20 %78 %
- Few rainy daysweight 30 %29 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Porto Alegre in January: quick answers
Is Porto Alegre hot in January?
Yes. In January, Porto Alegre is hot: daytime highs average 29 °C and nights stay around 21 °C. On about 12 days the thermometer climbs to 30 °C or more.
Can you swim in Porto Alegre in January?
Yes. In January the sea averages 25.9 °C – pleasant for swimming.
Does it rain much in Porto Alegre in January?
Rain is frequent, with about 14 rainy days and 130 mm in total.
Porto Alegre month by month
The whole year in Porto AlegreAll destinations: BrazilWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences