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September weather forecast in Niigata

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

	757 mmHg		79%
	5.5 m/s		+28

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

1 September, mon

	758 mmHg		77%
	5.3 m/s		+27

1 September, Monday. day, 27°; night, 24°; partly cloudy

2 September, tue

	758 mmHg		77%
	6 m/s		+28

2 September, Tuesday. day, 27°; night, 23°; clear

3 September, wed

	759 mmHg		77%
	5.9 m/s		+27

3 September, Wednesday. day, 27°; night, 23°; rain

4 September, thu

	758 mmHg		77%
	6 m/s		+27

4 September, Thursday. day, 26°; night, 23°; clear

5 September, fri

	758 mmHg		77%
	5.3 m/s		+27

5 September, Friday. day, 27°; night, 23°; overcast

6 September, sat

	757 mmHg		77%
	5.8 m/s		+26

6 September, Saturday. day, 26°; night, 23°; rain

7 September, sun

	758 mmHg		77%
	7 m/s		+26

7 September, Sunday. day, 26°; night, 23°; rain

8 September, mon

	759 mmHg		78%
	5.9 m/s		+27

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

9 September, tue

	759 mmHg		78%
	5 m/s		+26

9 September, Tuesday. day, 26°; night, 23°; clear

10 September, wed

	760 mmHg		80%
	5.2 m/s		+26

10 September, Wednesday. day, 26°; night, 23°; rain

11 September, thu

	760 mmHg		78%
	5.9 m/s		+26

11 September, Thursday. day, 26°; night, 23°; rain

12 September, fri

	760 mmHg		77%
	5.8 m/s		+26

12 September, Friday. day, 25°; night, 22°; partly cloudy

13 September, sat

	760 mmHg		78%
	5.6 m/s		+26

13 September, Saturday. day, 25°; night, 22°; rain

14 September, sun

	761 mmHg		77%
	5.1 m/s		+26

14 September, Sunday. day, 25°; night, 22°; rain

15 September, mon

	760 mmHg		76%
	5.6 m/s		+26

15 September, Monday. day, 25°; night, 21°; clear

16 September, tue

	759 mmHg		76%
	6.2 m/s		+26

16 September, Tuesday. day, 25°; night, 22°; overcast

17 September, wed

	759 mmHg		76%
	6.1 m/s		+26

17 September, Wednesday. day, 25°; night, 22°; rain

18 September, thu

	759 mmHg		76%
	6.2 m/s		+25

18 September, Thursday. day, 25°; night, 22°; rain

19 September, fri

	760 mmHg		75%
	6.4 m/s		+25

19 September, Friday. day, 24°; night, 21°; overcast

20 September, sat

	760 mmHg		74%
	5.8 m/s		+24

20 September, Saturday. day, 24°; night, 20°; clear

21 September, sun

	760 mmHg		74%
	6.4 m/s		+24

21 September, Sunday. day, 23°; night, 20°; overcast

22 September, mon

	761 mmHg		74%
	6.5 m/s		+24

22 September, Monday. day, 23°; night, 20°; rain

23 September, tue

	762 mmHg		74%
	6.2 m/s		+24

23 September, Tuesday. day, 23°; night, 19°; rain

24 September, wed

	761 mmHg		73%
	6.2 m/s		+24

24 September, Wednesday. day, 23°; night, 20°; rain

25 September, thu

	762 mmHg		74%
	5.8 m/s		+24

25 September, Thursday. day, 23°; night, 20°; overcast

26 September, fri

	762 mmHg		74%
	5.6 m/s		+24

26 September, Friday. day, 22°; night, 19°; rain

27 September, sat

	762 mmHg		73%
	6 m/s		+24

27 September, Saturday. day, 23°; night, 19°; rain

28 September, sun

	762 mmHg		73%
	6.4 m/s		+24

28 September, Sunday. day, 22°; night, 19°; partly cloudy

29 September, mon

	762 mmHg		71%
	5.6 m/s		+23

29 September, Monday. day, 22°; night, 19°; partly cloudy

30 September, tue

	761 mmHg		74%
	6.1 m/s		+23

30 September, Tuesday. day, 22°; night, 19°; overcast

1 October, wed

	760 mmHg		74%
	6.4 m/s		+23

1 October, Wednesday. day, 22°; night, 19°; partly cloudy

2 October, thu

	761 mmHg		74%
	7 m/s		+22

2 October, Thursday. day, 22°; night, 19°; rain

3 October, fri

	762 mmHg		71%
	6.2 m/s		+22

3 October, Friday. day, 22°; night, 18°; partly cloudy

4 October, sat

	762 mmHg		73%
	6.5 m/s		+22

4 October, Saturday. day, 21°; night, 18°; rain

Average data for 10 years

Niigata September

5

sunny days

15

days with precipitation

10

cloudy days

5 sunny days; 15 days with precipitation; 10 cloudy days;

76

%

air humidity

3.7

m/s

WindSE

156

mm of precipitation

(9% of annual average)

+25

°C

Water temperature

air humidity 76%; 156 millimeters of precipitation (9% of annual average); Wind south-easterly 3.7 Meters per second; Water temperature +25°

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

Tokyo
Toyama
Fuji
Hakone
Nagano
Yokohama
Aomori
Shirahama
Shizuoka

Cities with similar weather in September

Kemer
Barcelona
Rome
Athens
Thessaloniki
Salou
Naples
Gudauta
Bar

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

In September, the weather in Niigata is typically warm. Average daily high temperature in September is about 25 degrees above zero. On average, Niigata has 15 rainy, 6 cloudy, 5 sunny, and 4 partly cloudy days in September. The rains are usually heavy.

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