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September weather forecast in Bahia Blanca

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

	752 mmHg		60%
	6.3 m/s		+17

31 August, Sunday. day, 16°; night, 7°; partly cloudy

1 September, mon

	753 mmHg		63%
	6.1 m/s		+18

1 September, Monday. day, 16°; night, 6°; partly cloudy

2 September, tue

	753 mmHg		61%
	5.9 m/s		+15

2 September, Tuesday. day, 15°; night, 5°; clear

3 September, wed

	753 mmHg		63%
	6.4 m/s		+16

3 September, Wednesday. day, 16°; night, 5°; partly cloudy

4 September, thu

	752 mmHg		63%
	6.4 m/s		+17

4 September, Thursday. day, 16°; night, 6°; partly cloudy

5 September, fri

	753 mmHg		61%
	6.3 m/s		+17

5 September, Friday. day, 17°; night, 6°; partly cloudy

6 September, sat

	750 mmHg		61%
	6.7 m/s		+18

6 September, Saturday. day, 17°; night, 8°; overcast

7 September, sun

	749 mmHg		64%
	6.3 m/s		+21

7 September, Sunday. day, 17°; night, 8°; overcast

8 September, mon

	750 mmHg		62%
	6.9 m/s		+20

8 September, Monday. day, 17°; night, 7°; clear

9 September, tue

	751 mmHg		62%
	6.8 m/s		+17

9 September, Tuesday. day, 16°; night, 7°; partly cloudy

10 September, wed

	751 mmHg		64%
	6.6 m/s		+19

10 September, Wednesday. day, 16°; night, 7°; rain

11 September, thu

	751 mmHg		60%
	7.5 m/s		+19

11 September, Thursday. day, 17°; night, 7°; rain

12 September, fri

	751 mmHg		60%
	6.8 m/s		+20

12 September, Friday. day, 17°; night, 7°; clear

13 September, sat

	752 mmHg		62%
	6.6 m/s		+19

13 September, Saturday. day, 16°; night, 6°; clear

14 September, sun

	752 mmHg		61%
	7.1 m/s		+18

14 September, Sunday. day, 17°; night, 6°; partly cloudy

15 September, mon

	752 mmHg		58%
	6.8 m/s		+19

15 September, Monday. day, 18°; night, 7°; rain

16 September, tue

	752 mmHg		58%
	6.6 m/s		+20

16 September, Tuesday. day, 18°; night, 7°; clear

17 September, wed

	751 mmHg		56%
	7.3 m/s		+21

17 September, Wednesday. day, 18°; night, 8°; partly cloudy

18 September, thu

	751 mmHg		62%
	6.8 m/s		+20

18 September, Thursday. day, 18°; night, 7°; rain

19 September, fri

	751 mmHg		61%
	7 m/s		+18

19 September, Friday. day, 18°; night, 7°; clear

20 September, sat

	751 mmHg		58%
	6.5 m/s		+18

20 September, Saturday. day, 18°; night, 7°; clear

21 September, sun

	751 mmHg		58%
	7.3 m/s		+17

21 September, Sunday. day, 19°; night, 8°; partly cloudy

22 September, mon

	751 mmHg		61%
	7 m/s		+21

22 September, Monday. day, 18°; night, 8°; overcast

23 September, tue

	752 mmHg		63%
	6.5 m/s		+21

23 September, Tuesday. day, 18°; night, 8°; clear

24 September, wed

	753 mmHg		62%
	6 m/s		+21

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

25 September, thu

	752 mmHg		60%
	6.5 m/s		+19

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

26 September, fri

	752 mmHg		60%
	6.8 m/s		+19

26 September, Friday. day, 19°; night, 8°; clear

27 September, sat

	752 mmHg		61%
	7.6 m/s		+18

27 September, Saturday. day, 18°; night, 9°; rain

28 September, sun

	751 mmHg		63%
	6.7 m/s		+18

28 September, Sunday. day, 19°; night, 8°; rain

29 September, mon

	751 mmHg		63%
	7 m/s		+20

29 September, Monday. day, 19°; night, 9°; overcast

30 September, tue

	749 mmHg		63%
	7.3 m/s		+18

30 September, Tuesday. day, 18°; night, 10°; rain

1 October, wed

	751 mmHg		62%
	6.5 m/s		+18

1 October, Wednesday. day, 18°; night, 9°; partly cloudy

2 October, thu

	752 mmHg		63%
	6.9 m/s		+20

2 October, Thursday. day, 18°; night, 8°; overcast

3 October, fri

	752 mmHg		64%
	6.5 m/s		+21

3 October, Friday. day, 18°; night, 8°; overcast

4 October, sat

	750 mmHg		66%
	6.7 m/s		+21

4 October, Saturday. day, 18°; night, 9°; rain

Average data for 10 years

Bahia Blanca September

11

sunny days

7

days with precipitation

6

cloudy days

11 sunny days; 7 days with precipitation; 6 cloudy days;

61

%

air humidity

4.69

m/s

WindSW

47

mm of precipitation

(8% of annual average)

+19

°C

Water temperature

air humidity 61%; 47 millimeters of precipitation (8% of annual average); Wind south-westerly 4.69 Meters per second; Water temperature +19°

Weather graphs for September

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

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S

S

S

S

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

S

S

SW

S

S

S

S

S

SW

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

Daytime temperature

Night-time temperature

Cities near you

Buenos Aires
Mar del Plata
Neuquen
Puerto Madryn
Santa Teresita
La Plata
Pinamar
Tigre
Miramar

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Cholpon-Ata
Oslo
Yurmala
Palanga
Dublin

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

In September, the weather in Bahia Blanca is typically warm. Average daily high temperature in September is about 17 degrees above zero. On average, Bahia Blanca has 11 sunny, 8 partly cloudy, 7 rainy, and 4 cloudy days in September. The rains are usually moderate. September as well as January, May, June, and July is considered the most uncomfortable time to visit Bahia Blanca.

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