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September weather forecast in Nilaveli

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		71%
	6 m/s		+29

31 August, Sunday. day, 34°; night, 25°; partly cloudy

1 September, mon

	752 mmHg		71%
	5.9 m/s		+29

1 September, Monday. day, 34°; night, 25°; rain

2 September, tue

	752 mmHg		71%
	5.9 m/s		+29

2 September, Tuesday. day, 34°; night, 25°; overcast

3 September, wed

	752 mmHg		71%
	5.9 m/s		+29

3 September, Wednesday. day, 34°; night, 25°; overcast

4 September, thu

	752 mmHg		70%
	5.9 m/s		+29

4 September, Thursday. day, 34°; night, 25°; overcast

5 September, fri

	752 mmHg		69%
	6.1 m/s		+29

5 September, Friday. day, 34°; night, 25°; overcast

6 September, sat

	752 mmHg		70%
	6.3 m/s		+29

6 September, Saturday. day, 34°; night, 25°; overcast

7 September, sun

	752 mmHg		69%
	6.2 m/s		+29

7 September, Sunday. day, 34°; night, 25°; overcast

8 September, mon

	752 mmHg		70%
	5.9 m/s		+29

8 September, Monday. day, 34°; night, 25°; partly cloudy

9 September, tue

	752 mmHg		69%
	6.1 m/s		+29

9 September, Tuesday. day, 34°; night, 25°; overcast

10 September, wed

	752 mmHg		70%
	6.1 m/s		+29

10 September, Wednesday. day, 34°; night, 25°; overcast

11 September, thu

	752 mmHg		70%
	6 m/s		+29

11 September, Thursday. day, 34°; night, 25°; rain

12 September, fri

	752 mmHg		71%
	5.8 m/s		+29

12 September, Friday. day, 34°; night, 25°; partly cloudy

13 September, sat

	752 mmHg		69%
	5.8 m/s		+29

13 September, Saturday. day, 34°; night, 25°; partly cloudy

14 September, sun

	752 mmHg		68%
	6.1 m/s		+29

14 September, Sunday. day, 34°; night, 26°; clear

15 September, mon

	752 mmHg		68%
	6.3 m/s		+29

15 September, Monday. day, 34°; night, 26°; partly cloudy

16 September, tue

	752 mmHg		68%
	6.5 m/s		+29

16 September, Tuesday. day, 34°; night, 26°; overcast

17 September, wed

	752 mmHg		69%
	6.2 m/s		+29

17 September, Wednesday. day, 34°; night, 25°; overcast

18 September, thu

	752 mmHg		70%
	6.3 m/s		+29

18 September, Thursday. day, 34°; night, 26°; overcast

19 September, fri

	752 mmHg		68%
	6.2 m/s		+29

19 September, Friday. day, 34°; night, 25°; overcast

20 September, sat

	752 mmHg		69%
	6.3 m/s		+29

20 September, Saturday. day, 34°; night, 25°; rain

21 September, sun

	752 mmHg		71%
	5.9 m/s		+29

21 September, Sunday. day, 34°; night, 25°; rain

22 September, mon

	752 mmHg		70%
	5.8 m/s		+29

22 September, Monday. day, 34°; night, 25°; rain

23 September, tue

	752 mmHg		71%
	5.4 m/s		+29

23 September, Tuesday. day, 34°; night, 25°; clear

24 September, wed

	752 mmHg		72%
	5.3 m/s		+29

24 September, Wednesday. day, 34°; night, 25°; rain

25 September, thu

	752 mmHg		73%
	5.3 m/s		+29

25 September, Thursday. day, 34°; night, 25°; rain

26 September, fri

	752 mmHg		73%
	5.1 m/s		+29

26 September, Friday. day, 33°; night, 25°; rain

27 September, sat

	752 mmHg		74%
	5.1 m/s		+29

27 September, Saturday. day, 33°; night, 25°; rain

28 September, sun

	752 mmHg		74%
	5.3 m/s		+29

28 September, Sunday. day, 33°; night, 25°; rain

29 September, mon

	752 mmHg		74%
	5.4 m/s		+29

29 September, Monday. day, 33°; night, 25°; rain

30 September, tue

	752 mmHg		75%
	5.2 m/s		+29

30 September, Tuesday. day, 33°; night, 25°; rain

1 October, wed

	752 mmHg		75%
	5 m/s		+29

1 October, Wednesday. day, 32°; night, 25°; clear

2 October, thu

	753 mmHg		75%
	4.9 m/s		+29

2 October, Thursday. day, 33°; night, 25°; rain

3 October, fri

	753 mmHg		74%
	5.1 m/s		+29

3 October, Friday. day, 33°; night, 25°; clear

4 October, sat

	753 mmHg		74%
	5 m/s		+29

4 October, Saturday. day, 33°; night, 25°; partly cloudy

Average data for 10 years

Nilaveli September

2

sunny days

12

days with precipitation

15

cloudy days

2 sunny days; 12 days with precipitation; 15 cloudy days;

71

%

air humidity

4.4

m/s

WindSW

80

mm of precipitation

(6% of annual average)

+29

°C

Water temperature

air humidity 71%; 80 millimeters of precipitation (6% of annual average); Wind south-westerly 4.4 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

SW

SW

SW

SW

SW

SW

SW

SW

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

Unawatuna
Colombo
Hikkaduwa
Sri Jayawardenapura Kotte
Bentota
Galle
Tangalle
Pasikudah
Kalutara

Cities with similar weather in September

Phuket
Santo Domingo
Goa
Male
Phan Thiet
Samui
Phú Quốc
Krabi
Puerto Plata

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

In September, the weather in Nilaveli is typically hot. Average daily high temperature in September is about 34 degrees above zero. On average, Nilaveli has 12 rainy, 12 cloudy, 4 partly cloudy, and 2 sunny days in September. The rains are usually heavy. September as well as April, May, August, and October is considered the most uncomfortable time to visit Nilaveli.

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