26.08
wed
wed
Day

72°F
NW 6 mph
Precip.
28%
28%
Night

70°F
SW 10 mph
Precip.
34%
34%
27.08
thu
thu
Day

70°F
SW 24 mph
Precip.
86%
86%
Night

70°F
S 12 mph
Precip.
14%
14%
28.08
fri
fri
Day

77°F
W 12 mph
Precip.
7%
7%
Night

72°F
SW 21 mph
Precip.
15%
15%
29.08
sat
sat
Day

81°F
SW 21 mph
Precip.
16%
16%
Night

73°F
SW 25 mph
Precip.
11%
11%
30.08
sun
sun
Day

81°F
SW 16 mph
Precip.
4%
4%
Night

73°F
SW 24 mph
Precip.
12%
12%
31.08
mon
mon
Day

82°F
SW 19 mph
Precip.
3%
3%
Night

73°F
SW 25 mph
Precip.
9%
9%
01.09
tue
tue
Day

73°F
N 11 mph
Precip.
8%
8%
Night

72°F
NE 7 mph
Precip.
39%
39%
02.09
wed
wed
Day

63°F
NE 9 mph
Precip.
56%
56%
Night

66°F
SW 11 mph
Precip.
89%
89%
03.09
thu
thu
Day

68°F
NE 5 mph
Precip.
49%
49%
Night

68°F
NW 17 mph
Precip.
41%
41%
04.09
fri
fri
Day

70°F
NW 9 mph
Precip.
26%
26%
Night

70°F
W 16 mph
Precip.
37%
37%
05.09
sat
sat
Day

68°F
SW 14 mph
Precip.
37%
37%
Night

70°F
SW 16 mph
Precip.
53%
53%
06.09
sun
sun
Day

73°F
SW 12 mph
Precip.
27%
27%
Night

72°F
SW 17 mph
Precip.
32%
32%
07.09
mon
mon
Day

73°F
S 5 mph
Precip.
31%
31%
Night

72°F
SW 11 mph
Precip.
29%
29%
08.09
tue
tue
Day

73°F
NW 6 mph
Precip.
9%
9%
Night

72°F
SW 6 mph
Precip.
31%
31%
sea water
temperature
temperature
| Rio das Ostras |
monthly
weather
weather
| Rio das Ostras |
current
weather
weather
| Rio das Ostras |
7 days
forecast
forecast
| Rio das Ostras |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 72.8°F. The highest and lowest sea temperatures during the month were 74.1°F and 71.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 70.9°F. The highest and lowest sea temperatures during the month were 72.7°F and 68.7°F.
Air temperature in Rio das Ostras, °F
Precipitation total in Rio das Ostras, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Rio das Ostras
Rio das Ostras on a weather map
Places in Brazil:
Name
°F
24 Hours Forecast
Rio das Ostras
Local time: 01:13
August 26, wednesday
0300

68°F
SW
6 mph
6 mph
0600

68°F
NE
9 mph
9 mph
0900

70°F
NE
9 mph
9 mph
1200

72°F
NW
6 mph
6 mph
1500

72°F
NW
9 mph
9 mph
1800

72°F
NW
7 mph
7 mph
2100

72°F
W
14 mph
14 mph
August 27, thursday
0000

70°F
SW
10 mph
10 mph


























