Current Sea Water Temperature:
+74.6°F
| Maximum Sea Water Temperature in August: | 76.8°F |
| Minimum Sea Water Temperature in August: | 71.4°F |
| Average water temperature in August: | 73.4°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| August 18 | 74.6°F | August 13 | 75.4°F |
| August 17 | 74.6°F | August 12 | 76.0°F |
| August 16 | 75.4°F | August 11 | 76.6°F |
| August 15 | 75.8°F | August 10 | 76.8°F |
| August 14 | 76.0°F | August 09 | 76.4°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 |  |
+78 |
| Buzios | |
+74 |
| Florianopolis | |
+70 |
| Fortaleza | |
+82 |
| Ilha de Itamaraca |  |
+82 |
| Joao Pessoa | |
+82 |
| Natal |  |
+84 |
| Recife | |
+82 |
| Rio de Janeiro | |
+76 |
| Salvador | |
+80 |
| Santos | |
+76 |
| Sao Jose de Ribamar | |
+86 |
| Sao Paulo | |
+72 |
| Sao Sebastiao | |
+82 |
| Xangri-la |  |
+70 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Rio das Ostras
Local time: 08:41
18 aug, tuesday
| 0900 |  |
72°F | SW 22 mph |
| 1200 | |
78°F | SW 18 mph |
| 1500 | |
80°F | SW 20 mph |
| 1800 |  |
74°F | SW 26 mph |
| 2100 | |
72°F | SW 24 mph |
19 aug, wednesday
| 0000 | |
72°F | SW 21 mph |
| 0300 | |
70°F | SW 19 mph |
| 0600 | |
70°F | SW 14 mph |