10 day forecast Monthly forecast Weather map

City or area

Go to comparison

September weather forecast in Trincomalee

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		63%
	8.3 m/s		+29

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

1 September, mon

	753 mmHg		62%
	7.6 m/s		+29

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

2 September, tue

	754 mmHg		63%
	7.8 m/s		+29

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

3 September, wed

	754 mmHg		62%
	8.1 m/s		+29

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

4 September, thu

	754 mmHg		62%
	8.1 m/s		+29

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

5 September, fri

	754 mmHg		64%
	8.1 m/s		+29

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

6 September, sat

	754 mmHg		64%
	7.8 m/s		+29

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

7 September, sun

	754 mmHg		63%
	8.6 m/s		+29

7 September, Sunday. day, 31°; night, 26°; overcast

8 September, mon

	754 mmHg		62%
	7.8 m/s		+29

8 September, Monday. day, 32°; night, 26°; rain

9 September, tue

	754 mmHg		62%
	8.6 m/s		+29

9 September, Tuesday. day, 32°; night, 26°; overcast

10 September, wed

	754 mmHg		62%
	8.8 m/s		+29

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

11 September, thu

	754 mmHg		62%
	8.1 m/s		+29

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

12 September, fri

	754 mmHg		63%
	7.9 m/s		+29

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

13 September, sat

	754 mmHg		64%
	8.5 m/s		+29

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

14 September, sun

	754 mmHg		61%
	8.8 m/s		+29

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

15 September, mon

	753 mmHg		60%
	9.3 m/s		+29

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

16 September, tue

	753 mmHg		60%
	9.5 m/s		+29

16 September, Tuesday. day, 33°; night, 27°; overcast

17 September, wed

	753 mmHg		58%
	9.6 m/s		+29

17 September, Wednesday. day, 33°; night, 27°; rain

18 September, thu

	753 mmHg		58%
	8.8 m/s		+29

18 September, Thursday. day, 33°; night, 27°; overcast

19 September, fri

	754 mmHg		58%
	8.8 m/s		+29

19 September, Friday. day, 33°; night, 27°; rain

20 September, sat

	754 mmHg		60%
	8.3 m/s		+29

20 September, Saturday. day, 33°; night, 27°; overcast

21 September, sun

	754 mmHg		62%
	7.6 m/s		+29

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

22 September, mon

	754 mmHg		63%
	7.1 m/s		+29

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

23 September, tue

	754 mmHg		63%
	6.5 m/s		+29

23 September, Tuesday. day, 32°; night, 26°; rain

24 September, wed

	754 mmHg		61%
	7 m/s		+29

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

25 September, thu

	754 mmHg		61%
	7.5 m/s		+29

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

26 September, fri

	754 mmHg		63%
	7 m/s		+29

26 September, Friday. day, 33°; night, 27°; rain

27 September, sat

	754 mmHg		62%
	7.5 m/s		+29

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

28 September, sun

	754 mmHg		63%
	7.4 m/s		+29

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

29 September, mon

	754 mmHg		64%
	7.5 m/s		+29

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

30 September, tue

	754 mmHg		66%
	6.9 m/s		+29

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

1 October, wed

	754 mmHg		66%
	6.6 m/s		+29

1 October, Wednesday. day, 32°; night, 27°; clear

2 October, thu

	754 mmHg		63%
	7.4 m/s		+29

2 October, Thursday. day, 32°; night, 27°; rain

3 October, fri

	754 mmHg		62%
	7.3 m/s		+29

3 October, Friday. day, 32°; night, 26°; rain

4 October, sat

	755 mmHg		64%
	7 m/s		+29

4 October, Saturday. day, 32°; night, 26°; rain

Average data for 10 years

Trincomalee September

1

sunny day

16

days with precipitation

13

cloudy days

1 sunny day; 16 days with precipitation; 13 cloudy days;

62

%

air humidity

6.3

m/s

WindSW

84

mm of precipitation

(6% of annual average)

+29

°C

Water temperature

air humidity 62%; 84 millimeters of precipitation (6% of annual average); Wind south-westerly 6.3 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
Hikkaduwa
Sri Jayawardenapura Kotte
Colombo
Bentota
Galle
Kalutara
Tangalle
Ahungalla

Cities with similar weather in September

Santo Domingo
Goa
Male
Phan Thiet
Samui
Krabi
Ko Chang
Mumbai
Puerto Plata

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

In September, the weather in Trincomalee is typically hot. Average daily high temperature in September is about 32 degrees above zero. On average, Trincomalee has 17 rainy and 13 cloudy days in September. The rains are usually heavy. September as well as January, April, May, and August is considered the most uncomfortable time to visit Trincomalee.

Links

Help Terms of use Contact us

For partners

Advertisement Yandex.Weather API

Weather forecasts

Hourly forecast Detailed 10 day forecast Monthly forecast Weather map Magnetic storms

Download app

English

English
Русский

Source data: Yandex.Traffic, Roshydromet FSBI "CAO", NOAA, © OpenStreetMap

© 2017–2025 YANDEX LLC