Measurements:
°C
°F
Rio das Ostras
78°F
SW 19 mph
Feels like: 82°F
Precip: 0%
World Resorts Brazil Rio das Ostras Weather August Weather in Rio das Ostras

Rio das Ostras Weather: August

Average Day Temperature: 78.7°F
Average Night Temperature: 67.0°F
Sea Water Temperature: 73.2°F
Number of Sunny Days: 16 days
Sunshine Hours: 11.1 - 11.7 hours
Number of Rainy Days: 2 days
Precipitation Totals: 0.7 in

Air Temperature in August, °F

Select Year: 2025 2024 2023

The highest day temperature in August 2025 was 88°F. The lowest night temperature was 61°F. The average values for day and night temperatures during August were 76.6°F и 65.6°F respectivly.

Rio das Ostras Water Sea Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Rio das Ostras was 72.9°F. The maximum and minimum values were 72.2°F and 74.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Rio das Ostras is 0.7 in. It makes august one of the least rainy months of the year.

Wind Speed in August, mph

The average wind speed in August is 9.4 mph. It makes August one of the most windy months of the year for Rio das Ostras.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Rio das Ostras in August is 7.5 hours.

Best Time to Visit Rio das Ostras
The most sunny months:
July 20 days
June 18 days
August 16 days
The most warm months:
March 86.1 °F
February 86.0 °F
January 85.1 °F
Warmest sea temperature:
March 80.8 °F
April 80.2 °F
February 80.0 °F
The most cold months:
July 78.0 °F
August 78.7 °F
June 79.3 °F
The most rainy months:
January 6 days
February 5 days
November 5 days
The most windy months:
September 10 mph
August 9 mph
October 9 mph

Rio das Ostras on the Weather Map

24 Hours Weather Forecast
Rio das Ostras
Local time: 17:47
11 jan, sunday
1800 78°F
SW
19 mph
2100 76°F
SW
16 mph
12 jan, monday
0000 74°F
SW
13 mph
0300 72°F
SW
12 mph
0600 76°F
SW
13 mph
0900 90°F
SW
9 mph
1200 94°F
SW
10 mph
1500 92°F
SW
15 mph