Current Sea Water Temperature:
+74.0°F
| Maximum Sea Water Temperature in September: | 76.2°F |
| Minimum Sea Water Temperature in September: | 69.0°F |
| Average water temperature in September: | 73.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| September 08 | 74.0°F | September 03 | 75.2°F |
| September 07 | 74.8°F | September 02 | 74.8°F |
| September 06 | 75.0°F | September 01 | 75.4°F |
| September 05 | 75.0°F | August 31 | 75.0°F |
| September 04 | 74.6°F | August 30 | 74.6°F |
When is the Warmest Sea for Rio das Ostras?
According to our data for the last three years for Rio das Ostras the highest average sea water temperature was in March, February and April.
Average Water Temperature by Month, °F
Sea Water Temperature in March
The average sea surface temperature in March 2026 for Rio das Ostras was 82.0°F. The maximum and minimum values were 79.2°F and 84.2°F respectively.
Sea Water Temperature in February
The average sea surface temperature in February 2026 for Rio das Ostras was 81.6°F. The maximum and minimum values were 77.8°F and 85.4°F respectively.
Sea Water Temperature in April
The average sea surface temperature in April 2026 for Rio das Ostras was 79.8°F. The maximum and minimum values were 78.0°F and 83.2°F respectively.
Brazil Resorts:
NAME
F°
| Angra dos Reis |  |
+66 |
| Balneario Camboriu |  |
+62 |
| Buzios |  |
+70 |
| Florianopolis | |
+64 |
| Fortaleza | |
+84 |
| Ilha de Itamaraca | |
+82 |
| Joao Pessoa |  |
+82 |
| Natal | |
+80 |
| Recife | |
+78 |
| Rio de Janeiro | |
+70 |
| Santos | |
+66 |
| Sao Jose de Ribamar | |
+84 |
| Sao Paulo | |
+56 |
| Sao Sebastiao | |
+62 |
| Xangri-la | |
+60 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Rio das Ostras
Local time: 17:15
08 sep, tuesday
| 1800 |  |
72°F | SW 19 mph |
| 2100 | |
70°F | SW 15 mph |
09 sep, wednesday
| 0000 | |
72°F | SW 17 mph |
| 0300 |  |
72°F | SW 19 mph |
| 0600 |  |
72°F | SW 22 mph |
| 0900 |  |
74°F | SW 19 mph |
| 1200 |  |
78°F | SW 14 mph |
| 1500 | |
76°F | SW 20 mph |