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September weather forecast in Hachijo Jima

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

	756 mmHg		83%
	8.89 m/s		+28

31 August, Sunday. day, 27°; night, 26°; rain

1 September, mon

	757 mmHg		83%
	8.6 m/s		+28

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

2 September, tue

	757 mmHg		81%
	8.8 m/s		+28

2 September, Tuesday. day, 27°; night, 26°; rain

3 September, wed

	757 mmHg		83%
	9 m/s		+28

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

4 September, thu

	757 mmHg		82%
	8.6 m/s		+28

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

5 September, fri

	757 mmHg		80%
	8.2 m/s		+28

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

6 September, sat

	756 mmHg		80%
	9.2 m/s		+28

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

7 September, sun

	757 mmHg		82%
	9.39 m/s		+28

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

8 September, mon

	757 mmHg		84%
	9.89 m/s		+28

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

9 September, tue

	757 mmHg		81%
	8.2 m/s		+28

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

10 September, wed

	758 mmHg		80%
	7.9 m/s		+28

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

11 September, thu

	758 mmHg		81%
	8.8 m/s		+28

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

12 September, fri

	759 mmHg		81%
	8.1 m/s		+27

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

13 September, sat

	759 mmHg		80%
	7.8 m/s		+28

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

14 September, sun

	758 mmHg		80%
	8.8 m/s		+28

14 September, Sunday. day, 27°; night, 26°; partly cloudy

15 September, mon

	758 mmHg		80%
	10.1 m/s		+28

15 September, Monday. day, 26°; night, 25°; overcast

16 September, tue

	757 mmHg		80%
	10 m/s		+28

16 September, Tuesday. day, 26°; night, 25°; rain

17 September, wed

	757 mmHg		80%
	9.8 m/s		+27

17 September, Wednesday. day, 27°; night, 26°; partly cloudy

18 September, thu

	757 mmHg		80%
	9.3 m/s		+27

18 September, Thursday. day, 26°; night, 26°; clear

19 September, fri

	758 mmHg		79%
	10 m/s		+27

19 September, Friday. day, 26°; night, 25°; partly cloudy

20 September, sat

	758 mmHg		78%
	10 m/s		+27

20 September, Saturday. day, 26°; night, 25°; partly cloudy

21 September, sun

	758 mmHg		78%
	11.4 m/s		+27

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

22 September, mon

	758 mmHg		78%
	11.6 m/s		+27

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

23 September, tue

	759 mmHg		78%
	11.2 m/s		+27

23 September, Tuesday. day, 26°; night, 25°; rain

24 September, wed

	758 mmHg		78%
	11.6 m/s		+27

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

25 September, thu

	758 mmHg		78%
	10.9 m/s		+27

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

26 September, fri

	759 mmHg		77%
	10.4 m/s		+27

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

27 September, sat

	759 mmHg		75%
	11.4 m/s		+26

27 September, Saturday. day, 25°; night, 24°; rain

28 September, sun

	759 mmHg		75%
	10.7 m/s		+27

28 September, Sunday. day, 25°; night, 24°; partly cloudy

29 September, mon

	759 mmHg		74%
	9.89 m/s		+27

29 September, Monday. day, 25°; night, 24°; overcast

30 September, tue

	759 mmHg		76%
	11.2 m/s		+26

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

1 October, wed

	758 mmHg		76%
	11.4 m/s		+26

1 October, Wednesday. day, 25°; night, 24°; rain

2 October, thu

	759 mmHg		75%
	10.3 m/s		+26

2 October, Thursday. day, 25°; night, 24°; clear

3 October, fri

	759 mmHg		74%
	9.8 m/s		+26

3 October, Friday. day, 25°; night, 24°; rain

4 October, sat

	760 mmHg		77%
	9.5 m/s		+26

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

Average data for 10 years

Hachijo Jima September

4

sunny days

18

days with precipitation

9

cloudy days

4 sunny days; 18 days with precipitation; 9 cloudy days;

79

%

air humidity

7.2

m/s

WindSE

237

mm of precipitation

(11% of annual average)

+27

°C

Water temperature

air humidity 79%; 237 millimeters of precipitation (11% of annual average); Wind south-easterly 7.2 Meters per second; Water temperature +27°

Weather graphs for September

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

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SE

SE

1

Average data for 10 years

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30

Daytime temperature

Night-time temperature

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

In September, the weather in Hachijo Jima is typically warm. Average daily high temperature in September is about 26 degrees above zero. On average, Hachijo Jima has 18 rainy, 5 partly cloudy, 4 sunny, and 3 cloudy days in September. The rains are usually heavy. September as well as January, February, March, and October is considered the most uncomfortable time to visit Hachijo Jima.

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