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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

	765 mmHg		76%
	7.3 m/s		+26

31 August, Sunday. day, 24°; night, 22°; clear

1 September, mon

	766 mmHg		75%
	8 m/s		+26

1 September, Monday. day, 24°; night, 22°; partly cloudy

2 September, tue

	767 mmHg		77%
	6.9 m/s		+26

2 September, Tuesday. day, 24°; night, 22°; rain

3 September, wed

	767 mmHg		81%
	7.5 m/s		+25

3 September, Wednesday. day, 24°; night, 22°; rain

4 September, thu

	767 mmHg		77%
	5.5 m/s		+25

4 September, Thursday. day, 25°; night, 22°; partly cloudy

5 September, fri

	768 mmHg		76%
	5.3 m/s		+26

5 September, Friday. day, 25°; night, 22°; rain

6 September, sat

	767 mmHg		81%
	5.5 m/s		+25

6 September, Saturday. day, 24°; night, 22°; rain

7 September, sun

	767 mmHg		80%
	6 m/s		+25

7 September, Sunday. day, 23°; night, 22°; clear

8 September, mon

	768 mmHg		70%
	6.5 m/s		+25

8 September, Monday. day, 24°; night, 22°; clear

9 September, tue

	768 mmHg		73%
	5.4 m/s		+25

9 September, Tuesday. day, 25°; night, 22°; partly cloudy

10 September, wed

	769 mmHg		77%
	5.1 m/s		+25

10 September, Wednesday. day, 24°; night, 21°; clear

11 September, thu

	768 mmHg		80%
	5.8 m/s		+25

11 September, Thursday. day, 24°; night, 22°; rain

12 September, fri

	768 mmHg		80%
	4.6 m/s		+26

12 September, Friday. day, 24°; night, 22°; rain

13 September, sat

	769 mmHg		75%
	4.8 m/s		+25

13 September, Saturday. day, 24°; night, 22°; clear

14 September, sun

	770 mmHg		75%
	4.5 m/s		+25

14 September, Sunday. day, 24°; night, 22°; clear

15 September, mon

	770 mmHg		72%
	6 m/s		+25

15 September, Monday. day, 24°; night, 22°; clear

16 September, tue

	769 mmHg		75%
	6.9 m/s		+25

16 September, Tuesday. day, 23°; night, 21°; clear

17 September, wed

	769 mmHg		77%
	6 m/s		+25

17 September, Wednesday. day, 23°; night, 22°; rain

18 September, thu

	768 mmHg		74%
	8.6 m/s		+25

18 September, Thursday. day, 24°; night, 21°; rain

19 September, fri

	769 mmHg		75%
	7.3 m/s		+25

19 September, Friday. day, 23°; night, 21°; partly cloudy

20 September, sat

	768 mmHg		72%
	6.6 m/s		+25

20 September, Saturday. day, 23°; night, 21°; rain

21 September, sun

	769 mmHg		69%
	6.4 m/s		+25

21 September, Sunday. day, 23°; night, 21°; clear

22 September, mon

	770 mmHg		72%
	6 m/s		+24

22 September, Monday. day, 22°; night, 20°; partly cloudy

23 September, tue

	771 mmHg		74%
	5.3 m/s		+24

23 September, Tuesday. day, 22°; night, 20°; clear

24 September, wed

	769 mmHg		75%
	6 m/s		+24

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

25 September, thu

	770 mmHg		73%
	6 m/s		+24

25 September, Thursday. day, 22°; night, 20°; partly cloudy

26 September, fri

	771 mmHg		70%
	5.9 m/s		+24

26 September, Friday. day, 22°; night, 20°; partly cloudy

27 September, sat

	771 mmHg		72%
	6 m/s		+24

27 September, Saturday. day, 21°; night, 20°; clear

28 September, sun

	771 mmHg		70%
	5.5 m/s		+24

28 September, Sunday. day, 22°; night, 20°; partly cloudy

29 September, mon

	772 mmHg		75%
	5.5 m/s		+23

29 September, Monday. day, 21°; night, 20°; rain

30 September, tue

	773 mmHg		74%
	6.5 m/s		+24

30 September, Tuesday. day, 20°; night, 18°; overcast

1 October, wed

	771 mmHg		74%
	6.3 m/s		+24

1 October, Wednesday. day, 21°; night, 19°; rain

2 October, thu

	769 mmHg		69%
	6.5 m/s		+24

2 October, Thursday. day, 21°; night, 19°; partly cloudy

3 October, fri

	771 mmHg		67%
	6 m/s		+23

3 October, Friday. day, 21°; night, 18°; partly cloudy

4 October, sat

	772 mmHg		66%
	6.6 m/s		+23

4 October, Saturday. day, 20°; night, 18°; clear

Average data for 10 years

Ulsan September

11

sunny days

11

days with precipitation

8

cloudy days

11 sunny days; 11 days with precipitation; 8 cloudy days;

75

%

air humidity

4.5

m/s

WindNE

131

mm of precipitation

(13% of annual average)

+25

°C

Water temperature

air humidity 75%; 131 millimeters of precipitation (13% of annual average); Wind north-easterly 4.5 Meters per second; Water temperature +25°

Weather graphs for September

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

N

NE

N

NE

NE

NE

N

NE

N

NE

NE

N

N

NE

NE

NE

NE

NE

NE

N

N

NE

NE

NE

NE

NE

NE

N

NE

N

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

Daytime temperature

Night-time temperature

Cities near you

Seoul
Busan
Jeju
Fukuoka
Nagasaki
Incheon
Hiroshima
Daegu
Seosan

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 23 degrees above zero. On average, Ulsan has 11 sunny, 10 rainy, 8 partly cloudy, and 1 cloudy day in September. The rains are usually heavy.

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