Current Sea Water Temperature:
+74.4°F
| Maximum Sea Water Temperature in July: | 77.0°F |
| Minimum Sea Water Temperature in July: | 71.6°F |
| Average water temperature in July: | 74.1°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| July 28 | 74.4°F | July 23 | 74.6°F |
| July 27 | 74.4°F | July 22 | 74.2°F |
| July 26 | 74.0°F | July 21 | 74.2°F |
| July 25 | 73.8°F | July 20 | 74.2°F |
| July 24 | 74.2°F | July 19 | 74.2°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 |  |
+70 |
| Buzios |  |
+72 |
| Florianopolis |  |
+64 |
| Fortaleza | |
+82 |
| Joao Pessoa | |
+76 |
| Natal | |
+76 |
| Porto Alegre |  |
+66 |
| Recife |  |
+76 |
| Rio de Janeiro | |
+74 |
| Salvador |  |
+78 |
| Santos | |
+72 |
| Sao Paulo | |
+66 |
| Sao Sebastiao | |
+70 |
| Ubatuba | |
+62 |
| Xangri-la | |
+64 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Rio das Ostras
Local time: 01:06
29 jul, wednesday
| 0300 |  |
68°F | S 9 mph |
| 0600 | |
68°F | S 9 mph |
| 0900 |  |
80°F | S 9 mph |
| 1200 | |
90°F | S 2 mph |
| 1500 | |
86°F | NW 2 mph |
| 1800 | |
74°F | NE 2 mph |
| 2100 |  |
74°F | S 4 mph |
30 jul, thursday
| 0000 | |
74°F | NE 9 mph |