Measurements:
°C
°F
CURRENT WEATHER
17:14
Rio das Ostras
72°F
SW 19 mph
Feels like: 72°F
Precip: 43%
World Resorts Brazil Rio das Ostras Weather

7 Day Weather Forecast

09.08
tue
DAY
68°F
SW 13 mph
precip
49%
NIGHT
72°F
SW 17 mph
precip
61%
09.09
wed
DAY
78°F
SW 14 mph
precip
17%
NIGHT
74°F
SW 18 mph
precip
33%
09.10
thu
DAY
78°F
S 14 mph
precip
29%
NIGHT
74°F
SW 15 mph
precip
67%
09.11
fri
DAY
82°F
SW 14 mph
precip
7%
NIGHT
76°F
SW 16 mph
precip
13%
09.12
sat
DAY
82°F
NE 7 mph
precip
7%
NIGHT
70°F
NE 19 mph
precip
44%
09.13
sun
DAY
70°F
NW 9 mph
precip
31%
NIGHT
70°F
W 21 mph
precip
59%
09.14
mon
DAY
68°F
SW 16 mph
precip
85%
NIGHT
70°F
SW 14 mph
precip
48%

Rio das Ostras Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Rio das Ostras was 21.6°F. The maximum and minimum values were 20.4°F and 22.6°F respectively.

Rio das Ostras on the Weather Map

Best Time to Visit Rio das Ostras
The most sunny months:
July 20 days
June 17 days
August 16 days
The most warm months:
February 86.0 °F
March 85.7 °F
January 84.9 °F
Warmest sea temperature:
March 81.0 °F
February 80.2 °F
April 80.1 °F
The most cold months:
July 78.3 °F
August 78.6 °F
June 79.1 °F
The most rainy months:
January 7 days
February 5 days
November 5 days
The most windy months:
September 10 mph
August 9 mph
October 9 mph
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