23.12
tue
tue
Day
77°F
E 6 mph
Precip.
72%
72%
Night
75°F
SE 3 mph
Precip.
100%
100%
24.12
wed
wed
Day
86°F
SE 6 mph
Precip.
100%
100%
Night
75°F
S 5 mph
Precip.
0%
0%
25.12
thu
thu
Day
84°F
E 7 mph
Precip.
100%
100%
Night
72°F
N 5 mph
Precip.
100%
100%
26.12
fri
fri
Day
75°F
W 4 mph
Precip.
0%
0%
Night
70°F
NW 3 mph
Precip.
0%
0%
27.12
sat
sat
Day
88°F
NE 6 mph
Precip.
100%
100%
Night
75°F
SE 3 mph
Precip.
100%
100%
28.12
sun
sun
Day
90°F
NE 6 mph
Precip.
25%
25%
Night
73°F
NE 3 mph
Precip.
100%
100%
29.12
mon
mon
Day
75°F
SE 2 mph
Precip.
27%
27%
Night
70°F
W 5 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 78.5°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: 23:39
December 24, wednesday
0000
75°F
SE
3 mph
3 mph
0300
75°F
SE
2 mph
2 mph
0600
77°F
SE
4 mph
4 mph
0900
82°F
SE
6 mph
6 mph
1200
86°F
SE
6 mph
6 mph
1500
86°F
SE
4 mph
4 mph
1800
81°F
S
4 mph
4 mph
2100
77°F
S
4 mph
4 mph
