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September weather forecast in Ulsan

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		77%
	4.9 m/s		+26

31 August, Sunday. day, 27°; night, 21°; rain

1 September, mon

	739 mmHg		77%
	4.6 m/s		+26

1 September, Monday. day, 27°; night, 21°; rain

2 September, tue

	739 mmHg		80%
	4.69 m/s		+25

2 September, Tuesday. day, 27°; night, 21°; rain

3 September, wed

	740 mmHg		79%
	4.5 m/s		+25

3 September, Wednesday. day, 27°; night, 20°; rain

4 September, thu

	740 mmHg		77%
	4.3 m/s		+26

4 September, Thursday. day, 27°; night, 20°; overcast

5 September, fri

	739 mmHg		78%
	4.6 m/s		+25

5 September, Friday. day, 26°; night, 20°; rain

6 September, sat

	738 mmHg		80%
	5.1 m/s		+25

6 September, Saturday. day, 25°; night, 20°; rain

7 September, sun

	739 mmHg		77%
	4.8 m/s		+25

7 September, Sunday. day, 26°; night, 20°; rain

8 September, mon

	741 mmHg		77%
	3.9 m/s		+25

8 September, Monday. day, 27°; night, 20°; partly cloudy

9 September, tue

	741 mmHg		78%
	3.7 m/s		+25

9 September, Tuesday. day, 26°; night, 19°; partly cloudy

10 September, wed

	741 mmHg		78%
	3.9 m/s		+25

10 September, Wednesday. day, 26°; night, 20°; overcast

11 September, thu

	741 mmHg		79%
	4 m/s		+26

11 September, Thursday. day, 26°; night, 20°; rain

12 September, fri

	741 mmHg		79%
	4.3 m/s		+25

12 September, Friday. day, 26°; night, 20°; rain

13 September, sat

	742 mmHg		78%
	4.4 m/s		+25

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

14 September, sun

	742 mmHg		78%
	4.3 m/s		+25

14 September, Sunday. day, 25°; night, 19°; overcast

15 September, mon

	741 mmHg		78%
	5 m/s		+25

15 September, Monday. day, 25°; night, 19°; overcast

16 September, tue

	740 mmHg		79%
	5 m/s		+25

16 September, Tuesday. day, 25°; night, 19°; rain

17 September, wed

	740 mmHg		78%
	5 m/s		+25

17 September, Wednesday. day, 25°; night, 19°; rain

18 September, thu

	741 mmHg		76%
	4.5 m/s		+25

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

19 September, fri

	742 mmHg		74%
	4.3 m/s		+25

19 September, Friday. day, 25°; night, 18°; partly cloudy

20 September, sat

	741 mmHg		74%
	4.8 m/s		+25

20 September, Saturday. day, 24°; night, 18°; partly cloudy

21 September, sun

	742 mmHg		77%
	5 m/s		+24

21 September, Sunday. day, 23°; night, 17°; partly cloudy

22 September, mon

	743 mmHg		76%
	5 m/s		+24

22 September, Monday. day, 23°; night, 16°; rain

23 September, tue

	743 mmHg		75%
	4.4 m/s		+24

23 September, Tuesday. day, 23°; night, 17°; clear

24 September, wed

	743 mmHg		75%
	4.19 m/s		+24

24 September, Wednesday. day, 24°; night, 17°; clear

25 September, thu

	743 mmHg		75%
	4.1 m/s		+24

25 September, Thursday. day, 24°; night, 17°; partly cloudy

26 September, fri

	744 mmHg		74%
	4 m/s		+24

26 September, Friday. day, 24°; night, 16°; clear

27 September, sat

	743 mmHg		76%
	4 m/s		+24

27 September, Saturday. day, 24°; night, 17°; clear

28 September, sun

	743 mmHg		76%
	4.1 m/s		+23

28 September, Sunday. day, 23°; night, 16°; partly cloudy

29 September, mon

	743 mmHg		77%
	4 m/s		+24

29 September, Monday. day, 23°; night, 16°; rain

30 September, tue

	742 mmHg		76%
	4.1 m/s		+24

30 September, Tuesday. day, 23°; night, 16°; partly cloudy

1 October, wed

	742 mmHg		75%
	4.5 m/s		+24

1 October, Wednesday. day, 23°; night, 16°; rain

2 October, thu

	742 mmHg		71%
	4.19 m/s		+23

2 October, Thursday. day, 23°; night, 15°; partly cloudy

3 October, fri

	743 mmHg		72%
	4 m/s		+23

3 October, Friday. day, 23°; night, 15°; rain

4 October, sat

	744 mmHg		70%
	4.5 m/s		+23

4 October, Saturday. day, 23°; night, 15°; overcast

Average data for 10 years

Ulsan September

5

sunny days

12

days with precipitation

10

cloudy days

5 sunny days; 12 days with precipitation; 10 cloudy days;

77

%

air humidity

2.9

m/s

WindSE

177

mm of precipitation

(16% of annual average)

+25

°C

Water temperature

air humidity 77%; 177 millimeters of precipitation (16% of annual average); Wind south-easterly 2.9 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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Daytime temperature

Night-time temperature

Cities near you

Seoul
Busan
Jeju
Fukuoka
Incheon
Hiroshima
Geoje
Ansan
Mokpo

Cities with similar weather in September

Gagra
Istanbul
Batumi
Pitsunda
Lisbon
Budva
Rimini
Venice
New Athos

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

In September, the weather in Ulsan is typically warm. Average daily high temperature in September is about 25 degrees above zero. On average, Ulsan has 12 rainy, 9 partly cloudy, 5 sunny, and 4 cloudy days in September. The rains are usually heavy.

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