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September weather forecast in Kumamoto

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

	738 mmHg		79%
	5 m/s		+28

31 August, Sunday. day, 27°; night, 24°; rain

1 September, mon

	740 mmHg		75%
	4.8 m/s		+28

1 September, Monday. day, 28°; night, 24°; clear

2 September, tue

	740 mmHg		75%
	3.9 m/s		+27

2 September, Tuesday. day, 27°; night, 24°; rain

3 September, wed

	740 mmHg		79%
	4.4 m/s		+28

3 September, Wednesday. day, 27°; night, 24°; rain

4 September, thu

	740 mmHg		80%
	4.6 m/s		+27

4 September, Thursday. day, 26°; night, 24°; rain

5 September, fri

	741 mmHg		77%
	4.3 m/s		+27

5 September, Friday. day, 27°; night, 24°; clear

6 September, sat

	741 mmHg		77%
	4 m/s		+27

6 September, Saturday. day, 28°; night, 25°; rain

7 September, sun

	740 mmHg		80%
	3.9 m/s		+27

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

8 September, mon

	741 mmHg		76%
	3.5 m/s		+27

8 September, Monday. day, 28°; night, 24°; partly cloudy

9 September, tue

	742 mmHg		73%
	3.5 m/s		+27

9 September, Tuesday. day, 28°; night, 24°; partly cloudy

10 September, wed

	742 mmHg		68%
	3.9 m/s		+27

10 September, Wednesday. day, 28°; night, 25°; partly cloudy

11 September, thu

	742 mmHg		68%
	4.1 m/s		+27

11 September, Thursday. day, 28°; night, 25°; partly cloudy

12 September, fri

	743 mmHg		76%
	3.4 m/s		+27

12 September, Friday. day, 27°; night, 24°; rain

13 September, sat

	743 mmHg		75%
	3.2 m/s		+27

13 September, Saturday. day, 27°; night, 23°; partly cloudy

14 September, sun

	743 mmHg		74%
	3.2 m/s		+27

14 September, Sunday. day, 27°; night, 23°; overcast

15 September, mon

	742 mmHg		75%
	4.3 m/s		+26

15 September, Monday. day, 26°; night, 23°; clear

16 September, tue

	741 mmHg		76%
	4.5 m/s		+26

16 September, Tuesday. day, 26°; night, 22°; overcast

17 September, wed

	740 mmHg		75%
	4.1 m/s		+27

17 September, Wednesday. day, 27°; night, 24°; rain

18 September, thu

	741 mmHg		68%
	5 m/s		+27

18 September, Thursday. day, 28°; night, 23°; rain

19 September, fri

	741 mmHg		75%
	4.5 m/s		+26

19 September, Friday. day, 25°; night, 22°; clear

20 September, sat

	741 mmHg		74%
	4.8 m/s		+26

20 September, Saturday. day, 26°; night, 22°; clear

21 September, sun

	742 mmHg		75%
	4.1 m/s		+26

21 September, Sunday. day, 25°; night, 22°; overcast

22 September, mon

	743 mmHg		75%
	3.2 m/s		+26

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

23 September, tue

	743 mmHg		75%
	3.7 m/s		+26

23 September, Tuesday. day, 25°; night, 21°; clear

24 September, wed

	742 mmHg		74%
	4 m/s		+26

24 September, Wednesday. day, 26°; night, 22°; clear

25 September, thu

	742 mmHg		72%
	3.7 m/s		+26

25 September, Thursday. day, 26°; night, 22°; partly cloudy

26 September, fri

	743 mmHg		74%
	4 m/s		+26

26 September, Friday. day, 26°; night, 22°; clear

27 September, sat

	743 mmHg		76%
	4.5 m/s		+26

27 September, Saturday. day, 26°; night, 22°; clear

28 September, sun

	743 mmHg		72%
	4 m/s		+26

28 September, Sunday. day, 27°; night, 22°; rain

29 September, mon

	745 mmHg		74%
	3.4 m/s		+25

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

30 September, tue

	745 mmHg		80%
	3.5 m/s		+25

30 September, Tuesday. day, 23°; night, 21°; clear

1 October, wed

	744 mmHg		77%
	4.6 m/s		+25

1 October, Wednesday. day, 25°; night, 22°; rain

2 October, thu

	742 mmHg		79%
	4.1 m/s		+25

2 October, Thursday. day, 24°; night, 21°; partly cloudy

3 October, fri

	743 mmHg		75%
	4 m/s		+25

3 October, Friday. day, 24°; night, 20°; partly cloudy

4 October, sat

	744 mmHg		68%
	4 m/s		+25

4 October, Saturday. day, 24°; night, 20°; partly cloudy

Average data for 10 years

Kumamoto September

9

sunny days

12

days with precipitation

9

cloudy days

9 sunny days; 12 days with precipitation; 9 cloudy days;

75

%

air humidity

2.7

m/s

WindNE

133

mm of precipitation

(10% of annual average)

+26

°C

Water temperature

air humidity 75%; 133 millimeters of precipitation (10% of annual average); Wind north-easterly 2.7 Meters per second; Water temperature +26°

Weather graphs for September

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

S

NE

NE

N

E

SE

SW

N

N

N

S

S

NE

E

NE

NE

E

SE

NE

NE

N

E

NE

E

NE

NE

E

NE

SE

E

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

Busan
Fukuoka
Nagasaki
Hiroshima
Daegu
Miyazaki
Kagoshima
Ulsan
Kitakyushu

Cities with similar weather in September

Antalya
Tunis
Marmaris
Paphos
Jerba
Limassol
Rhodes
Aqaba
Eylat

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

In September, the weather in Kumamoto is typically warm. Average daily high temperature in September is about 27 degrees above zero. On average, Kumamoto has 11 rainy, 10 sunny, 6 partly cloudy, and 3 cloudy days in September. The rains are usually heavy.

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