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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

31 August, sun

	753 mmHg		75%
	5 m/s		+29

31 August, Sunday. day, 32°; night, 27°; rain

1 September, mon

	753 mmHg		74%
	4.8 m/s		+29

1 September, Monday. day, 32°; night, 27°; partly cloudy

2 September, tue

	753 mmHg		74%
	4.8 m/s		+29

2 September, Tuesday. day, 32°; night, 27°; overcast

3 September, wed

	754 mmHg		75%
	4.6 m/s		+29

3 September, Wednesday. day, 32°; night, 27°; rain

4 September, thu

	754 mmHg		75%
	4.9 m/s		+29

4 September, Thursday. day, 32°; night, 27°; rain

5 September, fri

	753 mmHg		74%
	4.9 m/s		+29

5 September, Friday. day, 32°; night, 27°; overcast

6 September, sat

	753 mmHg		74%
	4.8 m/s		+29

6 September, Saturday. day, 32°; night, 27°; overcast

7 September, sun

	754 mmHg		74%
	4.8 m/s		+29

7 September, Sunday. day, 32°; night, 27°; rain

8 September, mon

	754 mmHg		75%
	4.8 m/s		+29

8 September, Monday. day, 32°; night, 27°; overcast

9 September, tue

	754 mmHg		74%
	4.9 m/s		+29

9 September, Tuesday. day, 32°; night, 27°; rain

10 September, wed

	753 mmHg		75%
	4.8 m/s		+29

10 September, Wednesday. day, 32°; night, 27°; overcast

11 September, thu

	753 mmHg		74%
	4.5 m/s		+29

11 September, Thursday. day, 32°; night, 27°; partly cloudy

12 September, fri

	754 mmHg		74%
	4.8 m/s		+29

12 September, Friday. day, 32°; night, 27°; overcast

13 September, sat

	754 mmHg		75%
	4.9 m/s		+29

13 September, Saturday. day, 32°; night, 27°; rain

14 September, sun

	754 mmHg		75%
	4.8 m/s		+29

14 September, Sunday. day, 32°; night, 27°; rain

15 September, mon

	753 mmHg		74%
	4.8 m/s		+29

15 September, Monday. day, 32°; night, 27°; rain

16 September, tue

	753 mmHg		74%
	4.9 m/s		+29

16 September, Tuesday. day, 32°; night, 27°; rain

17 September, wed

	754 mmHg		74%
	4.9 m/s		+29

17 September, Wednesday. day, 32°; night, 27°; overcast

18 September, thu

	754 mmHg		74%
	4.6 m/s		+29

18 September, Thursday. day, 32°; night, 27°; overcast

19 September, fri

	754 mmHg		74%
	4.8 m/s		+29

19 September, Friday. day, 32°; night, 27°; overcast

20 September, sat

	754 mmHg		74%
	4.69 m/s		+29

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

21 September, sun

	754 mmHg		75%
	4.6 m/s		+29

21 September, Sunday. day, 32°; night, 27°; rain

22 September, mon

	754 mmHg		75%
	4.5 m/s		+29

22 September, Monday. day, 32°; night, 27°; clear

23 September, tue

	754 mmHg		75%
	4.5 m/s		+29

23 September, Tuesday. day, 32°; night, 27°; clear

24 September, wed

	754 mmHg		76%
	4.4 m/s		+29

24 September, Wednesday. day, 32°; night, 26°; clear

25 September, thu

	754 mmHg		77%
	4.4 m/s		+29

25 September, Thursday. day, 32°; night, 26°; rain

26 September, fri

	755 mmHg		78%
	4.4 m/s		+29

26 September, Friday. day, 31°; night, 26°; rain

27 September, sat

	754 mmHg		78%
	4.3 m/s		+29

27 September, Saturday. day, 31°; night, 26°; rain

28 September, sun

	754 mmHg		79%
	4.19 m/s		+29

28 September, Sunday. day, 31°; night, 26°; rain

29 September, mon

	754 mmHg		78%
	4.19 m/s		+29

29 September, Monday. day, 31°; night, 26°; rain

30 September, tue

	754 mmHg		78%
	4.3 m/s		+29

30 September, Tuesday. day, 31°; night, 26°; rain

1 October, wed

	755 mmHg		78%
	4.4 m/s		+29

1 October, Wednesday. day, 31°; night, 26°; clear

2 October, thu

	755 mmHg		78%
	4.3 m/s		+30

2 October, Thursday. day, 31°; night, 26°; partly cloudy

3 October, fri

	755 mmHg		77%
	4.3 m/s		+29

3 October, Friday. day, 31°; night, 26°; clear

4 October, sat

	755 mmHg		77%
	4.19 m/s		+29

4 October, Saturday. day, 31°; night, 26°; rain

Average data for 10 years

Chennai September

3

sunny days

16

days with precipitation

17

cloudy days

3 sunny days; 16 days with precipitation; 17 cloudy days;

75

%

air humidity

3.2

m/s

WindSW

105

mm of precipitation

(10% of annual average)

+29

°C

Water temperature

air humidity 75%; 105 millimeters of precipitation (10% 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

S

S

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
Puttaparthi
Coimbatore
Pondicherry
Madurai
Mysore
Tirupati
Chavakachcheri
Jaffna

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.

In September, the weather in Chennai is typically hot. Average daily high temperature in September is about 32 degrees above zero. On average, Chennai has 16 rainy, 9 cloudy, 3 sunny, and 2 partly cloudy days in September. The rains are usually heavy. September as well as June, July, August, and October is considered the most uncomfortable time to visit Chennai.

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