26.08
wed
wed
Day
70°F
NW 5 mph
Precip.
27%
27%
Night
72°F
W 9 mph
Precip.
45%
45%
27.08
thu
thu
Day
70°F
S 1 mph
Precip.
66%
66%
Night
70°F
SW 14 mph
Precip.
16%
16%
28.08
fri
fri
Day
75°F
SW 17 mph
Precip.
8%
8%
Night
73°F
SW 25 mph
Precip.
17%
17%
29.08
sat
sat
Day
79°F
SW 17 mph
Precip.
6%
6%
Night
73°F
SW 26 mph
Precip.
14%
14%
30.08
sun
sun
Day
81°F
SW 17 mph
Precip.
4%
4%
Night
73°F
SW 17 mph
Precip.
11%
11%
31.08
mon
mon
Day
82°F
SW 15 mph
Precip.
2%
2%
Night
72°F
NE 11 mph
Precip.
12%
12%
01.09
tue
tue
Day
72°F
N 16 mph
Precip.
25%
25%
Night
68°F
N 17 mph
Precip.
94%
94%
sea water
temperature
temperature
| Rio das Ostras |
monthly
weather
weather
| Rio das Ostras |
current
weather
weather
| Rio das Ostras |
14 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 72.7°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: 12:30
August 26, wednesday
1500
72°F
NW
5 mph
5 mph
1800
72°F
NW
8 mph
8 mph
2100
72°F
NW
9 mph
9 mph
August 27, thursday
0000
72°F
W
9 mph
9 mph
0300
72°F
SW
7 mph
7 mph
0600
70°F
N
2 mph
2 mph
0900
70°F
SE
2 mph
2 mph
1200
70°F
S
1 mph
1 mph
