30.12
tue
tue
Day
88°F
N 2 mph
Precip.
0%
0%
Night
75°F
SW 2 mph
Precip.
0%
0%
31.12
wed
wed
Day
91°F
E 4 mph
Precip.
0%
0%
Night
77°F
SW 1 mph
Precip.
0%
0%
01.01
thu
thu
Day
95°F
E 6 mph
Precip.
0%
0%
Night
73°F
N 6 mph
Precip.
100%
100%
02.01
fri
fri
Day
86°F
N 9 mph
Precip.
71%
71%
Night
68°F
N 7 mph
Precip.
0%
0%
03.01
sat
sat
Day
79°F
N 6 mph
Precip.
0%
0%
Night
66°F
NW 5 mph
Precip.
0%
0%
04.01
sun
sun
Day
81°F
N 6 mph
Precip.
0%
0%
Night
68°F
W 7 mph
Precip.
0%
0%
05.01
mon
mon
Day
84°F
NW 5 mph
Precip.
0%
0%
Night
72°F
W 6 mph
Precip.
0%
0%
sea water
temperature
temperature
| Porto Alegre |
monthly
weather
weather
| Porto Alegre |
current
weather
weather
| Porto Alegre |
14 days
forecast
forecast
| Porto Alegre |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 78.1°F. The highest and lowest sea temperatures during the month were 81.0°F and 75.6°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 80.7°F. The highest and lowest sea temperatures during the month were 83.8°F and 77.2°F.
Air temperature in Porto Alegre, °F
Precipitation total in Porto Alegre, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Porto Alegre
Porto Alegre on a weather map
Places in Brazil:
Name
°F
24 Hours Forecast
Porto Alegre
Local time: 17:41
December 30, tuesday
1800
81°F
W
1 mph
1 mph
2100
77°F
SW
2 mph
2 mph
December 31, wednesday
0000
75°F
SW
2 mph
2 mph
0300
73°F
S
1 mph
1 mph
0600
75°F
S
3 mph
3 mph
0900
84°F
SE
6 mph
6 mph
1200
91°F
E
4 mph
4 mph
1500
93°F
N
5 mph
5 mph
