Current Sea Water Temperature:
+67.4°F
| Maximum Sea Water Temperature in September: | 71.6°F |
| Minimum Sea Water Temperature in September: | 61.4°F |
| Average water temperature in September: | 65.9°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| September 28 | 67.4°F | September 23 | 65.4°F |
| September 27 | 67.6°F | September 22 | 66.6°F |
| September 26 | 67.4°F | September 21 | 66.2°F |
| September 25 | 65.6°F | September 20 | 64.8°F |
| September 24 | 64.2°F | September 19 | 64.2°F |
When is the Warmest Sea for Porto Alegre?
According to our data for the last three years for Porto Alegre the highest average sea water temperature was in February, January and March.
Average Water Temperature by Month, °F
Sea Water Temperature in February
The average sea surface temperature in February 2026 for Porto Alegre was 84.8°F. The maximum and minimum values were 82.0°F and 86.6°F respectively.
Sea Water Temperature in January
The average sea surface temperature in January 2026 for Porto Alegre was 83.6°F. The maximum and minimum values were 81.4°F and 86.4°F respectively.
Sea Water Temperature in March
The average sea surface temperature in March 2026 for Porto Alegre was 82.4°F. The maximum and minimum values were 80.8°F and 85.2°F respectively.
Brazil Resorts:
NAME
F°
| Balneario Camboriu |  |
+66 |
| Buzios |  |
+74 |
| Duque de Caxias | |
+76 |
| Florianopolis | |
+68 |
| Fortaleza |  |
+84 |
| Joao Pessoa | |
+82 |
| Natal | |
+80 |
| Recife | |
+78 |
| Rio de Janeiro | |
+74 |
| Salvador | |
+80 |
| Santos |  |
+72 |
| Sao Jose de Ribamar | |
+84 |
| Sao Paulo | |
+64 |
| Sao Sebastiao | |
+70 |
| Xangri-la | |
+66 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Porto Alegre
Local time: 20:07
28 sep, monday
| 2100 |  |
66°F | N 5 mph |
29 sep, tuesday
| 0000 | |
66°F | W 5 mph |
| 0300 |  |
66°F | NW 6 mph |
| 0600 | |
64°F | NW 6 mph |
| 0900 |  |
66°F | E 8 mph |
| 1200 | |
66°F | E 3 mph |
| 1500 | |
70°F | SE 11 mph |
| 1800 |  |
74°F | E 6 mph |