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September weather forecast in Bandar Seri Begawan

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

	757 mmHg		82%
	5.3 m/s		+30

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

1 September, mon

	757 mmHg		82%
	5.2 m/s		+30

1 September, Monday. day, 28°; night, 26°; rain

2 September, tue

	757 mmHg		81%
	5.2 m/s		+30

2 September, Tuesday. day, 28°; night, 26°; rain

3 September, wed

	757 mmHg		82%
	5.1 m/s		+30

3 September, Wednesday. day, 28°; night, 26°; rain

4 September, thu

	757 mmHg		82%
	5.4 m/s		+30

4 September, Thursday. day, 28°; night, 26°; rain

5 September, fri

	757 mmHg		81%
	5.1 m/s		+30

5 September, Friday. day, 28°; night, 26°; rain

6 September, sat

	757 mmHg		82%
	5.3 m/s		+30

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

7 September, sun

	757 mmHg		82%
	5.2 m/s		+30

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

8 September, mon

	757 mmHg		82%
	5.2 m/s		+30

8 September, Monday. day, 28°; night, 26°; rain

9 September, tue

	757 mmHg		83%
	5.7 m/s		+30

9 September, Tuesday. day, 28°; night, 26°; rain

10 September, wed

	757 mmHg		82%
	5.3 m/s		+30

10 September, Wednesday. day, 28°; night, 26°; rain

11 September, thu

	757 mmHg		82%
	5.3 m/s		+31

11 September, Thursday. day, 28°; night, 26°; rain

12 September, fri

	757 mmHg		81%
	5.2 m/s		+30

12 September, Friday. day, 28°; night, 26°; overcast

13 September, sat

	757 mmHg		82%
	5 m/s		+30

13 September, Saturday. day, 28°; night, 26°; overcast

14 September, sun

	757 mmHg		82%
	5.5 m/s		+30

14 September, Sunday. day, 28°; night, 26°; overcast

15 September, mon

	757 mmHg		82%
	5.3 m/s		+30

15 September, Monday. day, 28°; night, 26°; rain

16 September, tue

	757 mmHg		82%
	5.6 m/s		+30

16 September, Tuesday. day, 28°; night, 26°; rain

17 September, wed

	757 mmHg		82%
	5.6 m/s		+30

17 September, Wednesday. day, 28°; night, 26°; overcast

18 September, thu

	757 mmHg		80%
	5.1 m/s		+30

18 September, Thursday. day, 28°; night, 26°; rain

19 September, fri

	757 mmHg		81%
	5 m/s		+30

19 September, Friday. day, 28°; night, 26°; overcast

20 September, sat

	757 mmHg		83%
	5.4 m/s		+30

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

21 September, sun

	757 mmHg		82%
	5.5 m/s		+30

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

22 September, mon

	757 mmHg		81%
	5.3 m/s		+30

22 September, Monday. day, 28°; night, 26°; partly cloudy

23 September, tue

	757 mmHg		82%
	5.2 m/s		+31

23 September, Tuesday. day, 28°; night, 26°; partly cloudy

24 September, wed

	757 mmHg		82%
	5.2 m/s		+31

24 September, Wednesday. day, 28°; night, 26°; rain

25 September, thu

	757 mmHg		83%
	5.3 m/s		+30

25 September, Thursday. day, 28°; night, 26°; rain

26 September, fri

	757 mmHg		83%
	5.6 m/s		+30

26 September, Friday. day, 28°; night, 26°; rain

27 September, sat

	757 mmHg		82%
	5.5 m/s		+31

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

28 September, sun

	757 mmHg		83%
	5.4 m/s		+30

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

29 September, mon

	757 mmHg		83%
	5.3 m/s		+30

29 September, Monday. day, 28°; night, 26°; rain

30 September, tue

	757 mmHg		83%
	5.6 m/s		+30

30 September, Tuesday. day, 28°; night, 26°; rain

1 October, wed

	757 mmHg		84%
	5.7 m/s		+30

1 October, Wednesday. day, 28°; night, 26°; rain

2 October, thu

	757 mmHg		83%
	5.5 m/s		+30

2 October, Thursday. day, 28°; night, 26°; rain

3 October, fri

	757 mmHg		84%
	5.2 m/s		+30

3 October, Friday. day, 28°; night, 25°; rain

4 October, sat

	757 mmHg		84%
	5.3 m/s		+30

4 October, Saturday. day, 27°; night, 25°; rain

Average data for 10 years

Bandar Seri Begawan September

0

sunny days

23

days with precipitation

21

cloudy days

0 sunny days; 23 days with precipitation; 21 cloudy days;

82

%

air humidity

3.3

m/s

WindSW

228

mm of precipitation

(10% of annual average)

+30

°C

Water temperature

air humidity 82%; 228 millimeters of precipitation (10% of annual average); Wind south-westerly 3.3 Meters per second; Water temperature +30°

Weather graphs for September

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

SW

S

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

SW

S

S

S

S

SW

SW

S

S

S

SW

SW

SW

SW

S

S

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

Kota Kinabalu
Kuching
Sandakan
Bongao
Kuala Belait
Bandar Labuan
Sibu
Lahad Datu
Kudat

Cities with similar weather in September

Pattaya
Nha Trang
Bangkok
Varadero
Punta Cana
Havana
Cancun
Ko Chang
Mumbai

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

In September, the weather in Bandar Seri Begawan is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Bandar Seri Begawan has 23 rainy, 5 cloudy, and 2 partly cloudy days in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Bandar Seri Begawan.

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