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August weather forecast in Rio de Janeiro

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		77%
	2.9 m/s		+23

27 July, Sunday. day, 26°; night, 16°; clear

28 July, mon

	763 mmHg		79%
	2.8 m/s		+22

28 July, Monday. day, 25°; night, 16°; partly cloudy

29 July, tue

	763 mmHg		79%
	3.1 m/s		+23

29 July, Tuesday. day, 25°; night, 16°; rain

30 July, wed

	764 mmHg		79%
	2.8 m/s		+23

30 July, Wednesday. day, 24°; night, 16°; overcast

31 July, thu

	764 mmHg		80%
	2.7 m/s		+23

31 July, Thursday. day, 25°; night, 16°; overcast

1 August, fri

	763 mmHg		78%
	2.7 m/s		+24

1 August, Friday. day, 26°; night, 16°; clear

2 August, sat

	762 mmHg		78%
	2.8 m/s		+24

2 August, Saturday. day, 27°; night, 16°; clear

3 August, sun

	762 mmHg		79%
	3.1 m/s		+23

3 August, Sunday. day, 26°; night, 17°; rain

4 August, mon

	763 mmHg		79%
	3.1 m/s		+22

4 August, Monday. day, 25°; night, 17°; rain

5 August, tue

	763 mmHg		79%
	3.3 m/s		+23

5 August, Tuesday. day, 25°; night, 16°; partly cloudy

6 August, wed

	763 mmHg		80%
	2.8 m/s		+23

6 August, Wednesday. day, 26°; night, 16°; partly cloudy

7 August, thu

	763 mmHg		78%
	2.9 m/s		+24

7 August, Thursday. day, 27°; night, 16°; clear

8 August, fri

	762 mmHg		80%
	3.1 m/s		+23

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

9 August, sat

	762 mmHg		80%
	3.2 m/s		+23

9 August, Saturday. day, 26°; night, 17°; rain

10 August, sun

	762 mmHg		79%
	3.3 m/s		+22

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

11 August, mon

	763 mmHg		78%
	3.3 m/s		+23

11 August, Monday. day, 25°; night, 17°; partly cloudy

12 August, tue

	763 mmHg		77%
	3 m/s		+24

12 August, Tuesday. day, 26°; night, 16°; clear

13 August, wed

	763 mmHg		76%
	3.3 m/s		+23

13 August, Wednesday. day, 26°; night, 16°; clear

14 August, thu

	762 mmHg		79%
	3.3 m/s		+22

14 August, Thursday. day, 25°; night, 16°; clear

15 August, fri

	763 mmHg		78%
	3.5 m/s		+23

15 August, Friday. day, 26°; night, 16°; rain

16 August, sat

	763 mmHg		78%
	3.1 m/s		+23

16 August, Saturday. day, 26°; night, 17°; partly cloudy

17 August, sun

	763 mmHg		77%
	3.1 m/s		+23

17 August, Sunday. day, 26°; night, 17°; clear

18 August, mon

	762 mmHg		76%
	3.1 m/s		+23

18 August, Monday. day, 27°; night, 17°; clear

19 August, tue

	762 mmHg		77%
	3.4 m/s		+23

19 August, Tuesday. day, 27°; night, 17°; clear

20 August, wed

	762 mmHg		78%
	3.3 m/s		+22

20 August, Wednesday. day, 26°; night, 17°; rain

21 August, thu

	763 mmHg		79%
	3.3 m/s		+23

21 August, Thursday. day, 25°; night, 17°; partly cloudy

22 August, fri

	763 mmHg		78%
	3.1 m/s		+23

22 August, Friday. day, 26°; night, 16°; clear

23 August, sat

	762 mmHg		75%
	3 m/s		+23

23 August, Saturday. day, 27°; night, 17°; clear

24 August, sun

	761 mmHg		76%
	3.4 m/s		+23

24 August, Sunday. day, 27°; night, 17°; clear

25 August, mon

	761 mmHg		76%
	3.1 m/s		+23

25 August, Monday. day, 27°; night, 17°; clear

26 August, tue

	761 mmHg		77%
	3.3 m/s		+23

26 August, Tuesday. day, 26°; night, 17°; clear

27 August, wed

	761 mmHg		77%
	3.3 m/s		+22

27 August, Wednesday. day, 26°; night, 17°; overcast

28 August, thu

	762 mmHg		79%
	3.1 m/s		+23

28 August, Thursday. day, 26°; night, 17°; rain

29 August, fri

	762 mmHg		78%
	3.3 m/s		+24

29 August, Friday. day, 26°; night, 17°; rain

30 August, sat

	762 mmHg		77%
	3.2 m/s		+23

30 August, Saturday. day, 26°; night, 17°; partly cloudy

31 August, sun

	762 mmHg		76%
	3.3 m/s		+23

31 August, Sunday. day, 27°; night, 17°; clear

1 September, mon

	761 mmHg		75%
	3.3 m/s		+22

1 September, Monday. day, 27°; night, 18°; clear

2 September, tue

	761 mmHg		75%
	3.4 m/s		+24

2 September, Tuesday. day, 27°; night, 18°; clear

3 September, wed

	761 mmHg		75%
	3.5 m/s		+23

3 September, Wednesday. day, 28°; night, 18°; clear

4 September, thu

	761 mmHg		76%
	3.4 m/s		+23

4 September, Thursday. day, 26°; night, 18°; clear

5 September, fri

	762 mmHg		77%
	3.6 m/s		+23

5 September, Friday. day, 26°; night, 18°; partly cloudy

6 September, sat

	762 mmHg		79%
	3.3 m/s		+23

6 September, Saturday. day, 25°; night, 17°; rain

Average data for 10 years

Rio de Janeiro August

16

sunny days

8

days with precipitation

5

cloudy days

16 sunny days; 8 days with precipitation; 5 cloudy days;

78

%

air humidity

1.8

m/s

WindS

51

mm of precipitation

(4% of annual average)

+23

°C

Water temperature

air humidity 78%; 51 millimeters of precipitation (4% of annual average); Wind southerly 1.8 Meters per second; Water temperature +23°

Weather graphs for August

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

S

S

S

S

S

S

SE

S

SE

S

S

S

S

S

SE

SE

SE

SE

SE

SE

SE

S

SE

SE

SE

S

S

S

SE

SE

SE

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

Sao Paulo
Belo Horizonte
Vitória
Santos
Buzios
Rio das Ostras
Araruama
Itaquaquecetuba
Volta Redonda

Cities with similar weather in August

Toronto
Genoa
Boston
Marseilles
San Diego
Bali
San Remo
Loanda
Mombasa

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

August in Rio de Janeiro is the sunniest month of the year. In August, the weather in Rio de Janeiro is typically warm. Average daily high temperature in August is about 26 degrees above zero. On average, Rio de Janeiro has 16 sunny, 8 rainy, 6 partly cloudy, and 1 cloudy day in August. The rains are usually moderate. August as well as June and July is considered the most comfortable time to visit Rio de Janeiro.

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