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December 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

30 November, sun

	761 mmHg		66%
	12.1 m/s		+22

30 November, Sunday. day, 18°; night, 16°; rain

1 December, mon

	761 mmHg		67%
	12.2 m/s		+22

1 December, Monday. day, 18°; night, 16°; rain

2 December, tue

	762 mmHg		65%
	11.9 m/s		+22

2 December, Tuesday. day, 18°; night, 16°; clear

3 December, wed

	762 mmHg		64%
	11.8 m/s		+22

3 December, Wednesday. day, 18°; night, 16°; clear

4 December, thu

	761 mmHg		66%
	13.2 m/s		+22

4 December, Thursday. day, 17°; night, 15°; rain

5 December, fri

	761 mmHg		68%
	12.7 m/s		+22

5 December, Friday. day, 17°; night, 15°; rain

6 December, sat

	762 mmHg		66%
	12.3 m/s		+22

6 December, Saturday. day, 17°; night, 15°; clear

7 December, sun

	762 mmHg		65%
	11.8 m/s		+22

7 December, Sunday. day, 16°; night, 15°; rain

8 December, mon

	762 mmHg		66%
	12.1 m/s		+22

8 December, Monday. day, 16°; night, 14°; partly cloudy

9 December, tue

	763 mmHg		64%
	11.4 m/s		+22

9 December, Tuesday. day, 16°; night, 15°; overcast

10 December, wed

	762 mmHg		65%
	11.2 m/s		+22

10 December, Wednesday. day, 17°; night, 15°; rain

11 December, thu

	761 mmHg		67%
	13 m/s		+22

11 December, Thursday. day, 17°; night, 15°; rain

12 December, fri

	761 mmHg		64%
	12.4 m/s		+22

12 December, Friday. day, 16°; night, 14°; partly cloudy

13 December, sat

	761 mmHg		66%
	12.4 m/s		+22

13 December, Saturday. day, 16°; night, 14°; rain

14 December, sun

	762 mmHg		64%
	11.8 m/s		+21

14 December, Sunday. day, 16°; night, 14°; partly cloudy

15 December, mon

	762 mmHg		65%
	12.4 m/s		+21

15 December, Monday. day, 16°; night, 14°; partly cloudy

16 December, tue

	761 mmHg		65%
	13.2 m/s		+21

16 December, Tuesday. day, 16°; night, 14°; partly cloudy

17 December, wed

	760 mmHg		66%
	13.6 m/s		+21

17 December, Wednesday. day, 15°; night, 13°; rain

18 December, thu

	762 mmHg		64%
	12.5 m/s		+21

18 December, Thursday. day, 15°; night, 13°; partly cloudy

19 December, fri

	763 mmHg		64%
	11.8 m/s		+21

19 December, Friday. day, 14°; night, 13°; clear

20 December, sat

	763 mmHg		62%
	11.7 m/s		+21

20 December, Saturday. day, 15°; night, 14°; overcast

21 December, sun

	761 mmHg		65%
	12.5 m/s		+21

21 December, Sunday. day, 16°; night, 14°; rain

22 December, mon

	760 mmHg		68%
	14 m/s		+21

22 December, Monday. day, 15°; night, 13°; rain

23 December, tue

	761 mmHg		64%
	12.8 m/s		+21

23 December, Tuesday. day, 15°; night, 13°; clear

24 December, wed

	761 mmHg		64%
	12.6 m/s		+21

24 December, Wednesday. day, 15°; night, 13°; rain

25 December, thu

	760 mmHg		65%
	13.5 m/s		+21

25 December, Thursday. day, 15°; night, 13°; rain

26 December, fri

	760 mmHg		66%
	13.9 m/s		+21

26 December, Friday. day, 14°; night, 12°; rain

27 December, sat

	762 mmHg		62%
	12.4 m/s		+21

27 December, Saturday. day, 14°; night, 12°; partly cloudy

28 December, sun

	762 mmHg		63%
	12.2 m/s		+20

28 December, Sunday. day, 14°; night, 13°; rain

29 December, mon

	761 mmHg		64%
	12.5 m/s		+21

29 December, Monday. day, 14°; night, 13°; rain

30 December, tue

	760 mmHg		63%
	12.9 m/s		+21

30 December, Tuesday. day, 15°; night, 12°; rain

31 December, wed

	759 mmHg		66%
	13.8 m/s		+21

31 December, Wednesday. day, 14°; night, 12°; rain

1 January, thu

	760 mmHg		64%
	13.3 m/s		+21

1 January, Thursday. day, 14°; night, 12°; clear

2 January, fri

	761 mmHg		64%
	12.9 m/s		+20

2 January, Friday. day, 14°; night, 12°; rain

3 January, sat

	761 mmHg		64%
	13.7 m/s		+20

3 January, Saturday. day, 14°; night, 12°; partly cloudy

Average data for 10 years

Hachijo Jima December

5

sunny days

17

days with precipitation

6

cloudy days

5 sunny days; 17 days with precipitation; 6 cloudy days;

65

%

air humidity

9.6

m/s

WindSW

143

mm of precipitation

(7% of annual average)

+21

°C

Water temperature

air humidity 65%; 143 millimeters of precipitation (7% of annual average); Wind south-westerly 9.6 Meters per second; Water temperature +21°

Weather graphs for December

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

W

SW

SW

W

W

W

W

SW

W

SW

SW

W

SW

SW

W

W

W

W

W

W

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

31

Daytime temperature

Night-time temperature

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

In December, the weather in Hachijo Jima is typically warm. Average daily high temperature in December is about 16 degrees above zero. On average, Hachijo Jima has 17 rainy, 7 partly cloudy, 5 sunny, and 2 cloudy days in December. The rains are usually heavy. December as well as January, February, March, and September is considered the most uncomfortable time to visit Hachijo Jima.

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