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September weather forecast in Cabo Frio

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

31 August, sun

	761 mmHg		78%
	6.3 m/s		+22

31 August, Sunday. day, 25°; night, 19°; clear

1 September, mon

	760 mmHg		78%
	6.1 m/s		+22

1 September, Monday. day, 25°; night, 19°; clear

2 September, tue

	760 mmHg		79%
	6.2 m/s		+22

2 September, Tuesday. day, 25°; night, 19°; clear

3 September, wed

	760 mmHg		78%
	6 m/s		+22

3 September, Wednesday. day, 25°; night, 19°; clear

4 September, thu

	760 mmHg		78%
	6.1 m/s		+22

4 September, Thursday. day, 24°; night, 19°; clear

5 September, fri

	761 mmHg		78%
	6 m/s		+22

5 September, Friday. day, 24°; night, 19°; clear

6 September, sat

	761 mmHg		78%
	6 m/s		+22

6 September, Saturday. day, 24°; night, 19°; partly cloudy

7 September, sun

	761 mmHg		78%
	6.1 m/s		+22

7 September, Sunday. day, 24°; night, 19°; clear

8 September, mon

	760 mmHg		77%
	6.7 m/s		+22

8 September, Monday. day, 25°; night, 19°; clear

9 September, tue

	760 mmHg		77%
	6.4 m/s		+22

9 September, Tuesday. day, 26°; night, 20°; clear

10 September, wed

	760 mmHg		80%
	6.4 m/s		+22

10 September, Wednesday. day, 25°; night, 20°; clear

11 September, thu

	760 mmHg		80%
	6.5 m/s		+22

11 September, Thursday. day, 25°; night, 20°; clear

12 September, fri

	760 mmHg		77%
	6.3 m/s		+22

12 September, Friday. day, 25°; night, 20°; clear

13 September, sat

	760 mmHg		78%
	6.8 m/s		+22

13 September, Saturday. day, 25°; night, 20°; clear

14 September, sun

	759 mmHg		79%
	6.5 m/s		+22

14 September, Sunday. day, 26°; night, 20°; clear

15 September, mon

	760 mmHg		81%
	6.3 m/s		+22

15 September, Monday. day, 25°; night, 20°; rain

16 September, tue

	760 mmHg		81%
	6.2 m/s		+22

16 September, Tuesday. day, 24°; night, 20°; rain

17 September, wed

	760 mmHg		80%
	6.2 m/s		+22

17 September, Wednesday. day, 24°; night, 19°; rain

18 September, thu

	760 mmHg		79%
	5.9 m/s		+22

18 September, Thursday. day, 24°; night, 20°; partly cloudy

19 September, fri

	760 mmHg		78%
	6.1 m/s		+22

19 September, Friday. day, 25°; night, 20°; partly cloudy

20 September, sat

	759 mmHg		80%
	6.9 m/s		+22

20 September, Saturday. day, 25°; night, 20°; partly cloudy

21 September, sun

	758 mmHg		81%
	6.7 m/s		+22

21 September, Sunday. day, 25°; night, 20°; rain

22 September, mon

	759 mmHg		81%
	6.4 m/s		+22

22 September, Monday. day, 24°; night, 20°; rain

23 September, tue

	759 mmHg		78%
	6.2 m/s		+22

23 September, Tuesday. day, 24°; night, 19°; partly cloudy

24 September, wed

	759 mmHg		79%
	6.5 m/s		+22

24 September, Wednesday. day, 25°; night, 19°; clear

25 September, thu

	759 mmHg		80%
	6.1 m/s		+22

25 September, Thursday. day, 24°; night, 19°; rain

26 September, fri

	760 mmHg		80%
	6.4 m/s		+22

26 September, Friday. day, 24°; night, 19°; rain

27 September, sat

	759 mmHg		79%
	5.9 m/s		+22

27 September, Saturday. day, 25°; night, 20°; partly cloudy

28 September, sun

	760 mmHg		80%
	5.7 m/s		+22

28 September, Sunday. day, 24°; night, 20°; rain

29 September, mon

	760 mmHg		82%
	5.5 m/s		+22

29 September, Monday. day, 24°; night, 20°; rain

30 September, tue

	760 mmHg		82%
	5.9 m/s		+22

30 September, Tuesday. day, 24°; night, 20°; rain

1 October, wed

	759 mmHg		80%
	6.1 m/s		+22

1 October, Wednesday. day, 25°; night, 20°; rain

2 October, thu

	757 mmHg		81%
	5.9 m/s		+22

2 October, Thursday. day, 25°; night, 20°; clear

3 October, fri

	758 mmHg		82%
	5.7 m/s		+22

3 October, Friday. day, 24°; night, 20°; rain

4 October, sat

	759 mmHg		82%
	5.7 m/s		+22

4 October, Saturday. day, 24°; night, 20°; clear

Average data for 10 years

Cabo Frio September

14

sunny days

10

days with precipitation

7

cloudy days

14 sunny days; 10 days with precipitation; 7 cloudy days;

79

%

air humidity

4.3

m/s

WindSE

70

mm of precipitation

(6% of annual average)

+22

°C

Water temperature

air humidity 79%; 70 millimeters of precipitation (6% of annual average); Wind south-easterly 4.3 Meters per second; Water temperature +22°

Weather graphs for September

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

E

E

SE

SE

SE

SE

E

E

E

E

E

E

E

E

SE

SE

SE

SE

E

E

SE

SE

E

SE

SE

SE

SE

SE

SE

SE

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

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18

19

20

21

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28

29

30

Daytime temperature

Night-time temperature

Cities near you

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

Cities with similar weather in September

Lisbon
Porto
Santa Cruz de Tenerife
Marseilles
Las Palmas de Gran Canaria
Marbella
Cannes
Port Louis
Fuerteventura

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

September in Cabo Frio is the windiest month of the year. In September, the weather in Cabo Frio is typically warm. Average daily high temperature in September is about 25 degrees above zero. On average, Cabo Frio has 14 sunny, 10 rainy, and 6 partly cloudy days in September. The rains are usually heavy.

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