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September weather forecast in Chennai

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

30 August, sun

	754 mmHg		70%
	5 m/s		+29

30 August, Sunday. day, 31°; night, 28°; rain

31 August, mon

	754 mmHg		69%
	4.8 m/s		+29

31 August, Monday. day, 31°; night, 27°; rain

1 September, tue

	754 mmHg		69%
	4.6 m/s		+29

1 September, Tuesday. day, 31°; night, 28°; rain

2 September, wed

	754 mmHg		69%
	5.1 m/s		+29

2 September, Wednesday. day, 31°; night, 28°; rain

3 September, thu

	754 mmHg		68%
	5 m/s		+29

3 September, Thursday. day, 32°; night, 28°; rain

4 September, fri

	755 mmHg		69%
	4.5 m/s		+29

4 September, Friday. day, 32°; night, 28°; rain

5 September, sat

	754 mmHg		67%
	5 m/s		+29

5 September, Saturday. day, 31°; night, 28°; rain

6 September, sun

	754 mmHg		68%
	5.5 m/s		+29

6 September, Sunday. day, 31°; night, 28°; rain

7 September, mon

	754 mmHg		67%
	4.8 m/s		+29

7 September, Monday. day, 31°; night, 28°; rain

8 September, tue

	754 mmHg		67%
	4.5 m/s		+29

8 September, Tuesday. day, 31°; night, 28°; rain

9 September, wed

	754 mmHg		68%
	4.5 m/s		+29

9 September, Wednesday. day, 31°; night, 27°; rain

10 September, thu

	754 mmHg		70%
	4.3 m/s		+29

10 September, Thursday. day, 31°; night, 28°; rain

11 September, fri

	754 mmHg		69%
	4.5 m/s		+29

11 September, Friday. day, 31°; night, 28°; rain

12 September, sat

	754 mmHg		68%
	4.5 m/s		+29

12 September, Saturday. day, 31°; night, 28°; rain

13 September, sun

	754 mmHg		68%
	4.5 m/s		+29

13 September, Sunday. day, 32°; night, 28°; rain

14 September, mon

	754 mmHg		67%
	5 m/s		+29

14 September, Monday. day, 32°; night, 28°; rain

15 September, tue

	753 mmHg		69%
	4.6 m/s		+29

15 September, Tuesday. day, 32°; night, 28°; rain

16 September, wed

	753 mmHg		68%
	5 m/s		+29

16 September, Wednesday. day, 31°; night, 28°; rain

17 September, thu

	754 mmHg		68%
	5.1 m/s		+29

17 September, Thursday. day, 31°; night, 27°; rain

18 September, fri

	754 mmHg		68%
	4.6 m/s		+29

18 September, Friday. day, 31°; night, 28°; rain

19 September, sat

	754 mmHg		68%
	5 m/s		+29

19 September, Saturday. day, 31°; night, 28°; rain

20 September, sun

	754 mmHg		68%
	4.5 m/s		+29

20 September, Sunday. day, 31°; night, 28°; rain

21 September, mon

	755 mmHg		68%
	4.5 m/s		+29

21 September, Monday. day, 31°; night, 28°; rain

22 September, tue

	755 mmHg		66%
	4.9 m/s		+29

22 September, Tuesday. day, 32°; night, 28°; overcast

23 September, wed

	755 mmHg		67%
	4.8 m/s		+29

23 September, Wednesday. day, 32°; night, 28°; rain

24 September, thu

	755 mmHg		66%
	4.6 m/s		+29

24 September, Thursday. day, 32°; night, 28°; clear

25 September, fri

	755 mmHg		68%
	4 m/s		+29

25 September, Friday. day, 32°; night, 28°; clear

26 September, sat

	755 mmHg		68%
	3.9 m/s		+29

26 September, Saturday. day, 32°; night, 28°; rain

27 September, sun

	755 mmHg		69%
	3.7 m/s		+29

27 September, Sunday. day, 31°; night, 28°; rain

28 September, mon

	755 mmHg		69%
	4 m/s		+29

28 September, Monday. day, 31°; night, 28°; rain

29 September, tue

	755 mmHg		68%
	3.9 m/s		+29

29 September, Tuesday. day, 31°; night, 28°; rain

30 September, wed

	755 mmHg		72%
	4.1 m/s		+29

30 September, Wednesday. day, 31°; night, 27°; rain

1 October, thu

	755 mmHg		69%
	4.1 m/s		+29

1 October, Thursday. day, 31°; night, 28°; rain

2 October, fri

	755 mmHg		70%
	4.5 m/s		+30

2 October, Friday. day, 31°; night, 27°; rain

3 October, sat

	755 mmHg		68%
	4 m/s		+29

3 October, Saturday. day, 31°; night, 28°; partly cloudy

Average data for 10 years

Chennai September

2

sunny days

27

days with precipitation

1

cloudy day

2 sunny days; 27 days with precipitation; 1 cloudy day;

68

%

air humidity

3.2

m/s

WindSW

106

mm of precipitation

(11% of annual average)

+29

°C

Water temperature

air humidity 68%; 106 millimeters of precipitation (11% of annual average); Wind south-westerly 3.2 Meters per second; Water temperature +29°

Weather graphs for September

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

S

S

S

S

S

SW

SW

S

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

Bangalore
Tirupati
Puttaparthi
Coimbatore
Pondicherry
Madurai
Chavakachcheri
Jaffna
Mysore

Cities with similar weather in September

Pattaya
Nha Trang
Sharm-El-Sheikh
Bangkok
Miami
Punta Cana
Singapore
Cancun
Hong Kong

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

September in Chennai is the rainiest month of the year. In September, the weather in Chennai is typically hot. Average daily high temperature in September is about 31 degrees above zero. On average, Chennai has 27 rainy, 2 sunny, and 1 cloudy day in September. The rains are usually heavy. September as well as August, October, and November is considered the most uncomfortable time to visit Chennai.

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