Average sea water temperature in December:
+77.4°F
| Minimum sea water temperature in December: | 82.2°F |
| Maximum sea water temperature in December: | 73.0°F |
Daily 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.
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| Porto Alegre |
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| Porto Alegre |
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| Porto Alegre |
14 days
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| Porto Alegre |
Monthly sea water temperature in Porto Alegre, °F
Which Brazil resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Macapa | 85.2°F | 85.4°F |
| Belem | 84.1°F | 84.1°F |
| Ananindeua | 83.9°F | 84.0°F |
| Ilha de Itamaraca | 83.2°F | 83.5°F |
| Joao Pessoa | 83.0°F | 83.4°F |
| Jaboatao dos Guararapes | 82.9°F | 83.3°F |
| Recife | 82.7°F | 83.2°F |
| Natal | 82.7°F | 83.2°F |
| Paulista | 82.7°F | 83.1°F |
| Olinda | 82.6°F | 83.0°F |
| Paracuru | 82.5°F | 83.0°F |
| Fortaleza | 82.4°F | 82.9°F |
| Sao Jose de Ribamar | 82.3°F | 82.9°F |
| Sao Luis | 82.1°F | 82.9°F |
| Jericoacoara | 82.0°F | 82.8°F |
| Maceio | 81.2°F | 81.7°F |
| Salvador | 80.6°F | 81.6°F |
| Sao Goncalo | 80.3°F | 78.9°F |
| Itacare | 80.2°F | 81.5°F |
| Duque de Caxias | 80.0°F | 78.7°F |
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: 19:56
December 30, tuesday
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
1800
84°F
NW
7 mph
7 mph
