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September weather forecast in Keelung

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

	745 mmHg		84%
	6.9 m/s		+29

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

1 September, mon

	745 mmHg		83%
	7.5 m/s		+28

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

2 September, tue

	746 mmHg		83%
	6.3 m/s		+28

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

3 September, wed

	746 mmHg		83%
	6.4 m/s		+29

3 September, Wednesday. day, 28°; night, 26°; partly cloudy

4 September, thu

	745 mmHg		83%
	6.2 m/s		+29

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

5 September, fri

	745 mmHg		84%
	6.3 m/s		+29

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

6 September, sat

	746 mmHg		83%
	6.3 m/s		+29

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

7 September, sun

	747 mmHg		81%
	5.9 m/s		+29

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

8 September, mon

	747 mmHg		82%
	6 m/s		+28

8 September, Monday. day, 27°; night, 26°; clear

9 September, tue

	747 mmHg		82%
	6.7 m/s		+28

9 September, Tuesday. day, 27°; night, 26°; clear

10 September, wed

	746 mmHg		82%
	7 m/s		+29

10 September, Wednesday. day, 27°; night, 26°; rain

11 September, thu

	746 mmHg		83%
	7.3 m/s		+29

11 September, Thursday. day, 27°; night, 26°; rain

12 September, fri

	746 mmHg		84%
	7.7 m/s		+28

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

13 September, sat

	746 mmHg		85%
	7.9 m/s		+28

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

14 September, sun

	745 mmHg		84%
	7.6 m/s		+28

14 September, Sunday. day, 27°; night, 26°; rain

15 September, mon

	746 mmHg		83%
	7.8 m/s		+28

15 September, Monday. day, 27°; night, 26°; rain

16 September, tue

	746 mmHg		81%
	7.6 m/s		+28

16 September, Tuesday. day, 27°; night, 25°; clear

17 September, wed

	747 mmHg		79%
	7 m/s		+28

17 September, Wednesday. day, 27°; night, 25°; clear

18 September, thu

	747 mmHg		79%
	7.5 m/s		+28

18 September, Thursday. day, 27°; night, 25°; clear

19 September, fri

	747 mmHg		78%
	7.1 m/s		+28

19 September, Friday. day, 27°; night, 25°; clear

20 September, sat

	747 mmHg		80%
	7.8 m/s		+28

20 September, Saturday. day, 27°; night, 25°; clear

21 September, sun

	747 mmHg		81%
	7.8 m/s		+28

21 September, Sunday. day, 26°; night, 25°; rain

22 September, mon

	748 mmHg		80%
	7.4 m/s		+28

22 September, Monday. day, 26°; night, 25°; rain

23 September, tue

	749 mmHg		80%
	7.4 m/s		+27

23 September, Tuesday. day, 26°; night, 25°; partly cloudy

24 September, wed

	749 mmHg		79%
	7 m/s		+28

24 September, Wednesday. day, 26°; night, 25°; rain

25 September, thu

	749 mmHg		80%
	7 m/s		+28

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

26 September, fri

	748 mmHg		81%
	7.9 m/s		+27

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

27 September, sat

	747 mmHg		83%
	8.5 m/s		+27

27 September, Saturday. day, 26°; night, 25°; rain

28 September, sun

	747 mmHg		85%
	9 m/s		+27

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

29 September, mon

	748 mmHg		83%
	7.8 m/s		+27

29 September, Monday. day, 26°; night, 25°; rain

30 September, tue

	748 mmHg		82%
	7.6 m/s		+27

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

1 October, wed

	749 mmHg		80%
	7.9 m/s		+27

1 October, Wednesday. day, 26°; night, 25°; clear

2 October, thu

	749 mmHg		80%
	7.8 m/s		+26

2 October, Thursday. day, 26°; night, 24°; clear

3 October, fri

	749 mmHg		81%
	8.2 m/s		+26

3 October, Friday. day, 26°; night, 24°; clear

4 October, sat

	749 mmHg		81%
	8.5 m/s		+26

4 October, Saturday. day, 25°; night, 24°; rain

Average data for 10 years

Keelung September

7

sunny days

17

days with precipitation

8

cloudy days

7 sunny days; 17 days with precipitation; 8 cloudy days;

82

%

air humidity

5.6

m/s

WindSE

202

mm of precipitation

(10% of annual average)

+28

°C

Water temperature

air humidity 82%; 202 millimeters of precipitation (10% of annual average); Wind south-easterly 5.6 Meters per second; Water temperature +28°

Weather graphs for September

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

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1

Average data for 10 years

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30

Daytime temperature

Night-time temperature

Cities near you

Taipei
Xiamen
Wenzhou
Ishigaki
Fuzhou
Miyako-jima
Kaohsiung
Taizhou
Taichung

Cities with similar weather in September

Antalya
Alanya
Phuket
Side
Belek
Larnaca
Tel Aviv
Jerba
Rhodes

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

In September, the weather in Keelung is typically warm. Average daily high temperature in September is about 27 degrees above zero. On average, Keelung has 17 rainy, 7 sunny, 4 partly cloudy, and 2 cloudy days in September. The rains are usually heavy. September as well as January, February, March, and August is considered the most uncomfortable time to visit Keelung.

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