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September weather forecast in Mergui

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

	755 mmHg		90%
	3.4 m/s		+28

31 August, Sunday. day, 29°; night, 24°; rain

1 September, mon

	755 mmHg		90%
	3.5 m/s		+28

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

2 September, tue

	755 mmHg		90%
	3.3 m/s		+28

2 September, Tuesday. day, 29°; night, 25°; rain

3 September, wed

	755 mmHg		90%
	3.5 m/s		+28

3 September, Wednesday. day, 29°; night, 25°; rain

4 September, thu

	755 mmHg		90%
	3.7 m/s		+28

4 September, Thursday. day, 29°; night, 24°; rain

5 September, fri

	755 mmHg		90%
	3.5 m/s		+28

5 September, Friday. day, 29°; night, 24°; rain

6 September, sat

	755 mmHg		89%
	3.6 m/s		+28

6 September, Saturday. day, 30°; night, 25°; rain

7 September, sun

	755 mmHg		89%
	3.4 m/s		+28

7 September, Sunday. day, 29°; night, 25°; rain

8 September, mon

	755 mmHg		89%
	3.6 m/s		+28

8 September, Monday. day, 30°; night, 24°; rain

9 September, tue

	755 mmHg		89%
	3.4 m/s		+28

9 September, Tuesday. day, 30°; night, 24°; rain

10 September, wed

	755 mmHg		89%
	3.6 m/s		+28

10 September, Wednesday. day, 29°; night, 24°; rain

11 September, thu

	755 mmHg		90%
	3.2 m/s		+28

11 September, Thursday. day, 29°; night, 24°; rain

12 September, fri

	755 mmHg		90%
	3.3 m/s		+28

12 September, Friday. day, 29°; night, 25°; rain

13 September, sat

	755 mmHg		90%
	3.5 m/s		+28

13 September, Saturday. day, 29°; night, 24°; rain

14 September, sun

	755 mmHg		91%
	3.9 m/s		+28

14 September, Sunday. day, 29°; night, 24°; rain

15 September, mon

	755 mmHg		90%
	3.7 m/s		+28

15 September, Monday. day, 29°; night, 24°; rain

16 September, tue

	755 mmHg		91%
	3.9 m/s		+28

16 September, Tuesday. day, 29°; night, 24°; rain

17 September, wed

	755 mmHg		90%
	3.8 m/s		+28

17 September, Wednesday. day, 29°; night, 25°; rain

18 September, thu

	755 mmHg		89%
	3.4 m/s		+28

18 September, Thursday. day, 29°; night, 24°; rain

19 September, fri

	755 mmHg		89%
	3.3 m/s		+29

19 September, Friday. day, 29°; night, 25°; rain

20 September, sat

	756 mmHg		89%
	3.1 m/s		+29

20 September, Saturday. day, 30°; night, 24°; rain

21 September, sun

	756 mmHg		89%
	3.2 m/s		+28

21 September, Sunday. day, 29°; night, 25°; rain

22 September, mon

	756 mmHg		90%
	3.1 m/s		+28

22 September, Monday. day, 29°; night, 24°; rain

23 September, tue

	755 mmHg		90%
	3 m/s		+29

23 September, Tuesday. day, 30°; night, 24°; rain

24 September, wed

	755 mmHg		90%
	3.1 m/s		+28

24 September, Wednesday. day, 30°; night, 24°; rain

25 September, thu

	755 mmHg		89%
	3.1 m/s		+28

25 September, Thursday. day, 30°; night, 24°; rain

26 September, fri

	755 mmHg		89%
	2.9 m/s		+28

26 September, Friday. day, 30°; night, 24°; rain

27 September, sat

	755 mmHg		89%
	2.9 m/s		+28

27 September, Saturday. day, 30°; night, 25°; rain

28 September, sun

	755 mmHg		89%
	3.1 m/s		+28

28 September, Sunday. day, 30°; night, 24°; rain

29 September, mon

	755 mmHg		89%
	3 m/s		+28

29 September, Monday. day, 30°; night, 25°; rain

30 September, tue

	755 mmHg		89%
	3 m/s		+28

30 September, Tuesday. day, 30°; night, 24°; rain

1 October, wed

	756 mmHg		89%
	3 m/s		+28

1 October, Wednesday. day, 30°; night, 25°; rain

2 October, thu

	756 mmHg		89%
	2.7 m/s		+28

2 October, Thursday. day, 30°; night, 25°; rain

3 October, fri

	755 mmHg		89%
	2.9 m/s		+28

3 October, Friday. day, 30°; night, 24°; rain

4 October, sat

	755 mmHg		89%
	2.9 m/s		+28

4 October, Saturday. day, 30°; night, 25°; rain

Average data for 10 years

Mergui September

0

sunny days

30

days with precipitation

27

cloudy days

0 sunny days; 30 days with precipitation; 27 cloudy days;

89

%

air humidity

1.9

m/s

WindSW

618

mm of precipitation

(17% of annual average)

+28

°C

Water temperature

air humidity 89%; 618 millimeters of precipitation (17% of annual average); Wind south-westerly 1.9 Meters per second; Water temperature +28°

Weather graphs for September

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

SW

SW

W

SW

SW

SW

W

SW

SW

SW

SW

SW

SW

W

W

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

Pattaya
Bangkok
Samui
Khao Lak
Ko Chang
Hua Hin
Phang Nga
Ko Samet
Rayong

Cities with similar weather in September

Phuket
Santo Domingo
Male
Phan Thiet
Samui
Krabi
Puerto Plata
Panaji
Kinshasa

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

In September, the weather in Mergui is typically hot. Average daily high temperature in September is about 29 degrees above zero. On average, Mergui has 30 rainy days in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Mergui.

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