Average sea water temperature in September:
+64.3°F
| Minimum sea water temperature in September: | 69.4°F |
| Maximum sea water temperature in September: | 60.3°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 63.6°F. The highest and lowest sea temperatures during the month were 67.5°F and 61.7°F.
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| Porto Alegre |
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| Porto Alegre |
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| Porto Alegre |
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| Porto Alegre |
Monthly sea water temperature in Porto Alegre, °F
Which Brazil resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Macapa | 86.7°F | 85.5°F |
| Belem | 84.8°F | 84.3°F |
| Ananindeua | 84.6°F | 84.1°F |
| Sao Luis | 82.9°F | 82.5°F |
| Sao Jose de Ribamar | 82.8°F | 82.5°F |
| Ilha de Itamaraca | 81.8°F | 80.1°F |
| Jaboatao dos Guararapes | 81.6°F | 80.0°F |
| Paulista | 81.6°F | 80.0°F |
| Recife | 81.6°F | 79.9°F |
| Paracuru | 81.5°F | 80.6°F |
| Jericoacoara | 81.5°F | 80.7°F |
| Fortaleza | 81.5°F | 80.4°F |
| Olinda | 81.5°F | 80.0°F |
| Joao Pessoa | 81.5°F | 79.8°F |
| Natal | 81.4°F | 79.9°F |
| Maceio | 80.8°F | 79.7°F |
| Aracaju | 79.9°F | 79.0°F |
| Salvador | 79.9°F | 78.5°F |
| Lauro de Freitas | 79.4°F | 78.4°F |
| Ilheus | 79.2°F | 78.0°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: 18:46
October 05, monday
2100
61°F
W
12 mph
12 mph
October 06, tuesday
0000
61°F
W
10 mph
10 mph
0300
59°F
W
11 mph
11 mph
0600
59°F
W
7 mph
7 mph
0900
63°F
W
6 mph
6 mph
1200
72°F
W
5 mph
5 mph
1500
75°F
NW
5 mph
5 mph
1800
68°F
NW
7 mph
7 mph
