Weather in Porto Alegre, Rio Grande do Sul, Brazil in December
In an average December, Porto Alegre sees a daily high around 28°C and a low around 18°C, based on 1981–2026 of local climate records.
| Average high | 28°C |
|---|---|
| Typical high range | 24°C to 32°C |
| Average low | 18°C |
| Typical low range | 15°C to 21°C |
| Average daily precipitation | 3 mm |
December records
The most extreme December on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total December accumulation.
High
Highest
37°C
2011-12-22
Lowest
20°C
1982-12-02
Low
Highest
25°C
2006-12-18
Lowest
10°C
1982-12-09
Feels-like
Highest
59°C
2011-12-22
Lowest
8°C
1982-12-09
Humidity
Highest
24.5 g/m³
2023-12-15
Lowest
9.3 g/m³
1982-12-07
Wind
Highest
46 km/h
2009-12-12
Lowest
8 km/h
2002-12-30
Precip
Wettest
246 mm
1997
Driest
35 mm
2019
See Porto Alegre's live weather grade →
Visiting Porto Alegre in December? See how its comfort stacks up against where you live.
Compare Porto Alegre with your city →