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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

	753 mmHg		78%
	4.19 m/s		+28

31 August, Sunday. day, 30°; night, 24°; rain

1 September, mon

	754 mmHg		78%
	3.3 m/s		+27

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

2 September, tue

	754 mmHg		78%
	3.6 m/s		+28

2 September, Tuesday. day, 29°; night, 24°; overcast

3 September, wed

	754 mmHg		78%
	3.6 m/s		+27

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

4 September, thu

	754 mmHg		75%
	3.5 m/s		+27

4 September, Thursday. day, 30°; night, 23°; partly cloudy

5 September, fri

	753 mmHg		77%
	3.8 m/s		+27

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

6 September, sat

	752 mmHg		78%
	4.69 m/s		+27

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

7 September, sun

	753 mmHg		78%
	4.69 m/s		+27

7 September, Sunday. day, 29°; night, 23°; clear

8 September, mon

	755 mmHg		77%
	3 m/s		+27

8 September, Monday. day, 29°; night, 23°; clear

9 September, tue

	755 mmHg		75%
	3 m/s		+27

9 September, Tuesday. day, 29°; night, 23°; clear

10 September, wed

	755 mmHg		75%
	3.1 m/s		+27

10 September, Wednesday. day, 29°; night, 23°; clear

11 September, thu

	755 mmHg		75%
	3.3 m/s		+27

11 September, Thursday. day, 29°; night, 23°; partly cloudy

12 September, fri

	756 mmHg		77%
	3.5 m/s		+27

12 September, Friday. day, 29°; night, 23°; rain

13 September, sat

	756 mmHg		76%
	3.3 m/s		+27

13 September, Saturday. day, 29°; night, 23°; rain

14 September, sun

	755 mmHg		75%
	3.3 m/s		+26

14 September, Sunday. day, 29°; night, 23°; overcast

15 September, mon

	754 mmHg		76%
	4.1 m/s		+26

15 September, Monday. day, 28°; night, 23°; rain

16 September, tue

	754 mmHg		76%
	4.69 m/s		+27

16 September, Tuesday. day, 28°; night, 23°; rain

17 September, wed

	754 mmHg		74%
	5.2 m/s		+27

17 September, Wednesday. day, 28°; night, 22°; clear

18 September, thu

	755 mmHg		73%
	4.1 m/s		+26

18 September, Thursday. day, 28°; night, 22°; clear

19 September, fri

	755 mmHg		73%
	4.1 m/s		+26

19 September, Friday. day, 28°; night, 21°; clear

20 September, sat

	755 mmHg		74%
	4 m/s		+26

20 September, Saturday. day, 27°; night, 21°; partly cloudy

21 September, sun

	756 mmHg		73%
	4 m/s		+26

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

22 September, mon

	756 mmHg		75%
	4 m/s		+26

22 September, Monday. day, 27°; night, 21°; partly cloudy

23 September, tue

	756 mmHg		73%
	4.1 m/s		+26

23 September, Tuesday. day, 27°; night, 20°; partly cloudy

24 September, wed

	757 mmHg		73%
	3.9 m/s		+26

24 September, Wednesday. day, 27°; night, 20°; clear

25 September, thu

	757 mmHg		73%
	3.4 m/s		+26

25 September, Thursday. day, 27°; night, 21°; clear

26 September, fri

	757 mmHg		71%
	3.4 m/s		+26

26 September, Friday. day, 27°; night, 20°; clear

27 September, sat

	757 mmHg		73%
	3.4 m/s		+26

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

28 September, sun

	757 mmHg		72%
	3.4 m/s		+25

28 September, Sunday. day, 27°; night, 20°; partly cloudy

29 September, mon

	757 mmHg		76%
	3.6 m/s		+25

29 September, Monday. day, 26°; night, 21°; rain

30 September, tue

	756 mmHg		77%
	4.1 m/s		+25

30 September, Tuesday. day, 26°; night, 20°; rain

1 October, wed

	757 mmHg		74%
	3.9 m/s		+25

1 October, Wednesday. day, 26°; night, 20°; rain

2 October, thu

	757 mmHg		75%
	3.9 m/s		+25

2 October, Thursday. day, 25°; night, 19°; rain

3 October, fri

	758 mmHg		71%
	3.6 m/s		+25

3 October, Friday. day, 26°; night, 19°; partly cloudy

4 October, sat

	758 mmHg		70%
	4.1 m/s		+25

4 October, Saturday. day, 26°; night, 19°; overcast

Average data for 10 years

Kumamoto September

11

sunny days

11

days with precipitation

9

cloudy days

11 sunny days; 11 days with precipitation; 9 cloudy days;

75

%

air humidity

2.5

m/s

WindSE

169

mm of precipitation

(9% of annual average)

+26

°C

Water temperature

air humidity 75%; 169 millimeters of precipitation (9% of annual average); Wind south-easterly 2.5 Meters per second; Water temperature +26°

Weather graphs for September

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

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S

SE

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SE

SE

SE

SE

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E

SE

SE

SE

1

Average data for 10 years

2

3

4

5

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7

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9

10

11

12

13

14

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20

21

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29

30

Daytime temperature

Night-time temperature

Cities near you

Busan
Fukuoka
Hiroshima
Miyazaki
Geoje
Ulsan
Kagoshima
Nagasaki
Kochi

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 hot. Average daily high temperature in September is about 28 degrees above zero. On average, Kumamoto has 11 rainy, 11 sunny, 6 partly cloudy, and 2 cloudy days in September. The rains are usually heavy.

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