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August weather forecast in Rio das Ostras

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

27 July, sun

	763 mmHg		79%
	4 m/s		+22

27 July, Sunday. day, 26°; night, 18°; clear

28 July, mon

	763 mmHg		80%
	4.1 m/s		+23

28 July, Monday. day, 25°; night, 17°; clear

29 July, tue

	763 mmHg		78%
	4.6 m/s		+23

29 July, Tuesday. day, 25°; night, 17°; partly cloudy

30 July, wed

	764 mmHg		79%
	4.3 m/s		+22

30 July, Wednesday. day, 24°; night, 17°; rain

31 July, thu

	764 mmHg		79%
	4.1 m/s		+23

31 July, Thursday. day, 24°; night, 17°; rain

1 August, fri

	763 mmHg		78%
	4.1 m/s		+23

1 August, Friday. day, 26°; night, 17°; clear

2 August, sat

	762 mmHg		78%
	4.3 m/s		+23

2 August, Saturday. day, 26°; night, 18°; clear

3 August, sun

	762 mmHg		79%
	4.3 m/s		+22

3 August, Sunday. day, 25°; night, 18°; clear

4 August, mon

	763 mmHg		79%
	4.5 m/s		+22

4 August, Monday. day, 25°; night, 18°; partly cloudy

5 August, tue

	763 mmHg		79%
	4.69 m/s		+22

5 August, Tuesday. day, 25°; night, 17°; partly cloudy

6 August, wed

	763 mmHg		79%
	4.5 m/s		+22

6 August, Wednesday. day, 25°; night, 18°; partly cloudy

7 August, thu

	763 mmHg		79%
	4.6 m/s		+23

7 August, Thursday. day, 26°; night, 17°; clear

8 August, fri

	762 mmHg		80%
	4.9 m/s		+23

8 August, Friday. day, 26°; night, 18°; clear

9 August, sat

	762 mmHg		80%
	4.8 m/s		+22

9 August, Saturday. day, 26°; night, 18°; overcast

10 August, sun

	762 mmHg		79%
	5.1 m/s		+21

10 August, Sunday. day, 25°; night, 18°; rain

11 August, mon

	762 mmHg		79%
	4.8 m/s		+22

11 August, Monday. day, 24°; night, 18°; partly cloudy

12 August, tue

	763 mmHg		77%
	4.69 m/s		+22

12 August, Tuesday. day, 25°; night, 17°; clear

13 August, wed

	763 mmHg		76%
	4.8 m/s		+22

13 August, Wednesday. day, 26°; night, 18°; clear

14 August, thu

	762 mmHg		78%
	5 m/s		+22

14 August, Thursday. day, 25°; night, 18°; clear

15 August, fri

	763 mmHg		78%
	5 m/s		+22

15 August, Friday. day, 25°; night, 18°; rain

16 August, sat

	763 mmHg		78%
	5 m/s		+22

16 August, Saturday. day, 25°; night, 18°; partly cloudy

17 August, sun

	763 mmHg		78%
	4.8 m/s		+22

17 August, Sunday. day, 25°; night, 18°; rain

18 August, mon

	763 mmHg		78%
	4.8 m/s		+22

18 August, Monday. day, 26°; night, 18°; clear

19 August, tue

	762 mmHg		78%
	4.9 m/s		+23

19 August, Tuesday. day, 26°; night, 18°; clear

20 August, wed

	762 mmHg		79%
	4.9 m/s		+22

20 August, Wednesday. day, 25°; night, 19°; rain

21 August, thu

	763 mmHg		80%
	5.1 m/s		+22

21 August, Thursday. day, 25°; night, 18°; overcast

22 August, fri

	763 mmHg		79%
	4.8 m/s		+22

22 August, Friday. day, 25°; night, 18°; clear

23 August, sat

	762 mmHg		77%
	4.8 m/s		+22

23 August, Saturday. day, 26°; night, 18°; clear

24 August, sun

	762 mmHg		78%
	4.9 m/s		+22

24 August, Sunday. day, 26°; night, 19°; clear

25 August, mon

	761 mmHg		77%
	5.2 m/s		+22

25 August, Monday. day, 26°; night, 19°; clear

26 August, tue

	761 mmHg		78%
	5 m/s		+22

26 August, Tuesday. day, 26°; night, 18°; rain

27 August, wed

	761 mmHg		78%
	4.5 m/s		+22

27 August, Wednesday. day, 26°; night, 18°; overcast

28 August, thu

	762 mmHg		79%
	4.69 m/s		+22

28 August, Thursday. day, 25°; night, 18°; rain

29 August, fri

	762 mmHg		79%
	5.1 m/s		+23

29 August, Friday. day, 25°; night, 18°; rain

30 August, sat

	762 mmHg		78%
	4.9 m/s		+22

30 August, Saturday. day, 26°; night, 18°; partly cloudy

31 August, sun

	762 mmHg		77%
	5.3 m/s		+22

31 August, Sunday. day, 26°; night, 18°; clear

1 September, mon

	761 mmHg		76%
	5 m/s		+22

1 September, Monday. day, 26°; night, 19°; clear

2 September, tue

	761 mmHg		77%
	5.2 m/s		+23

2 September, Tuesday. day, 26°; night, 19°; clear

3 September, wed

	761 mmHg		76%
	5.3 m/s		+23

3 September, Wednesday. day, 27°; night, 19°; clear

4 September, thu

	761 mmHg		77%
	5.2 m/s		+23

4 September, Thursday. day, 26°; night, 19°; rain

5 September, fri

	762 mmHg		77%
	4.9 m/s		+22

5 September, Friday. day, 25°; night, 19°; clear

6 September, sat

	762 mmHg		77%
	5.2 m/s		+23

6 September, Saturday. day, 25°; night, 18°; partly cloudy

Average data for 10 years

Rio das Ostras August

15

sunny days

7

days with precipitation

4

cloudy days

15 sunny days; 7 days with precipitation; 4 cloudy days;

78

%

air humidity

3.2

m/s

WindE

42

mm of precipitation

(3% of annual average)

+22

°C

Water temperature

air humidity 78%; 42 millimeters of precipitation (3% of annual average); Wind easterly 3.2 Meters per second; Water temperature +22°

Weather graphs for August

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

E

E

E

SE

SE

SE

E

SE

E

SE

SE

SE

E

E

E

E

E

E

E

SE

SE

E

E

E

E

E

SE

SE

E

E

E

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Rio de Janeiro
Belo Horizonte
Vitória
Buzios
Araruama
Volta Redonda
Campos Do Jordao
Maricá
Ibirite

The weather forecast for August 2025 is based on historical data from the past 10 years.

In August, the weather in Rio das Ostras is typically warm. Average daily high temperature in August is about 25 degrees above zero. On average, Rio das Ostras has 15 sunny, 7 rainy, 6 partly cloudy, and 3 cloudy days in August. The rains are usually moderate. August as well as June and July is considered the most comfortable time to visit Rio das Ostras.

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