Measurements:
°C
°F
CURRENT WEATHER
19:36
Rio das Ostras
76°F
SW 13 mph
Feels like: 80°F
Precip: 13%
World Resorts Brazil Rio das Ostras Weather

7 Day Weather Forecast

09.28
mon
DAY
78°F
W 13 mph
precip
15%
NIGHT
74°F
SW 12 mph
precip
16%
09.29
tue
DAY
78°F
SW 21 mph
precip
10%
NIGHT
76°F
SW 24 mph
precip
12%
09.30
wed
DAY
88°F
S 14 mph
precip
12%
NIGHT
74°F
NE 15 mph
precip
31%
10.01
thu
DAY
76°F
N 16 mph
precip
33%
NIGHT
74°F
NE 6 mph
precip
71%
10.02
fri
DAY
74°F
N 7 mph
precip
49%
NIGHT
72°F
W 16 mph
precip
72%
10.03
sat
DAY
74°F
W 21 mph
precip
80%
NIGHT
76°F
SW 21 mph
precip
29%
10.04
sun
DAY
80°F
SW 15 mph
precip
21%
NIGHT
76°F
SW 17 mph
precip
22%

Rio das Ostras Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Rio das Ostras was 22.2°F. The maximum and minimum values were 21.8°F and 22.9°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 11 mph
August 9 mph
October 9 mph
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