10 day forecast Monthly forecast Weather map

City or area

Go to comparison

September weather forecast in Incheon

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 August, sun

	751 mmHg		72%
	4.1 m/s		+25

30 August, Sunday. day, 25°; night, 22°; partly cloudy

31 August, mon

	751 mmHg		72%
	4.8 m/s		+25

31 August, Monday. day, 26°; night, 21°; rain

1 September, tue

	752 mmHg		75%
	5.8 m/s		+25

1 September, Tuesday. day, 25°; night, 21°; clear

2 September, wed

	752 mmHg		75%
	4.9 m/s		+25

2 September, Wednesday. day, 25°; night, 20°; clear

3 September, thu

	753 mmHg		70%
	4 m/s		+25

3 September, Thursday. day, 26°; night, 21°; partly cloudy

4 September, fri

	753 mmHg		76%
	4 m/s		+25

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

5 September, sat

	752 mmHg		75%
	4 m/s		+24

5 September, Saturday. day, 24°; night, 21°; partly cloudy

6 September, sun

	753 mmHg		68%
	3.7 m/s		+25

6 September, Sunday. day, 25°; night, 21°; partly cloudy

7 September, mon

	754 mmHg		68%
	4.1 m/s		+25

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

8 September, tue

	754 mmHg		72%
	4 m/s		+24

8 September, Tuesday. day, 24°; night, 20°; rain

9 September, wed

	754 mmHg		73%
	3.5 m/s		+24

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

10 September, thu

	753 mmHg		75%
	3.9 m/s		+24

10 September, Thursday. day, 24°; night, 20°; clear

11 September, fri

	754 mmHg		70%
	3.7 m/s		+24

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

12 September, sat

	755 mmHg		68%
	3.4 m/s		+24

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

13 September, sun

	755 mmHg		73%
	3.2 m/s		+24

13 September, Sunday. day, 24°; night, 21°; clear

14 September, mon

	755 mmHg		66%
	4 m/s		+24

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

15 September, tue

	755 mmHg		62%
	3.7 m/s		+24

15 September, Tuesday. day, 24°; night, 20°; partly cloudy

16 September, wed

	754 mmHg		64%
	3.9 m/s		+24

16 September, Wednesday. day, 25°; night, 20°; clear

17 September, thu

	753 mmHg		64%
	5.5 m/s		+24

17 September, Thursday. day, 24°; night, 19°; rain

18 September, fri

	754 mmHg		68%
	5.3 m/s		+24

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

19 September, sat

	754 mmHg		64%
	4.9 m/s		+24

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

20 September, sun

	755 mmHg		70%
	4.1 m/s		+23

20 September, Sunday. day, 23°; night, 19°; partly cloudy

21 September, mon

	756 mmHg		62%
	4.5 m/s		+24

21 September, Monday. day, 23°; night, 18°; clear

22 September, tue

	755 mmHg		67%
	3.7 m/s		+23

22 September, Tuesday. day, 23°; night, 18°; clear

23 September, wed

	755 mmHg		69%
	3.5 m/s		+23

23 September, Wednesday. day, 23°; night, 19°; clear

24 September, thu

	756 mmHg		67%
	3.4 m/s		+24

24 September, Thursday. day, 23°; night, 19°; clear

25 September, fri

	756 mmHg		62%
	3.7 m/s		+23

25 September, Friday. day, 23°; night, 19°; clear

26 September, sat

	756 mmHg		62%
	4.8 m/s		+23

26 September, Saturday. day, 22°; night, 19°; partly cloudy

27 September, sun

	757 mmHg		63%
	4.4 m/s		+22

27 September, Sunday. day, 21°; night, 18°; clear

28 September, mon

	757 mmHg		67%
	4.1 m/s		+22

28 September, Monday. day, 20°; night, 17°; clear

29 September, tue

	758 mmHg		64%
	5.5 m/s		+22

29 September, Tuesday. day, 21°; night, 17°; partly cloudy

30 September, wed

	755 mmHg		68%
	4.6 m/s		+21

30 September, Wednesday. day, 20°; night, 16°; partly cloudy

1 October, thu

	755 mmHg		63%
	5 m/s		+22

1 October, Thursday. day, 21°; night, 16°; partly cloudy

2 October, fri

	757 mmHg		63%
	6.3 m/s		+21

2 October, Friday. day, 19°; night, 16°; partly cloudy

3 October, sat

	758 mmHg		62%
	4 m/s		+22

3 October, Saturday. day, 20°; night, 15°; clear

Average data for 10 years

Incheon September

16

sunny days

3

days with precipitation

11

cloudy days

16 sunny days; 3 days with precipitation; 11 cloudy days;

68

%

air humidity

2.9

m/s

WindNE

55

mm of precipitation

(7% of annual average)

+24

°C

Water temperature

air humidity 68%; 55 millimeters of precipitation (7% of annual average); Wind north-easterly 2.9 Meters per second; Water temperature +24°

Weather graphs for September

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

E

NE

E

E

N

N

NE

N

SW

NE

NW

NW

S

N

NE

NE

NE

SE

N

NE

NE

E

NE

N

NE

E

NE

N

N

NE

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
Pyongyang
Jeju
Daegu
Wonsan
Seosan
Ulsan
Andong

Cities with similar weather in September

Kemer
Barcelona
Rome
Baku
Batumi
Heraklion
Venice
Thessaloniki
Salou

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

In September, the weather in Incheon is typically warm. Average daily high temperature in September is about 23 degrees above zero. On average, Incheon has 16 sunny, 10 partly cloudy, 3 rainy, and 1 cloudy day in September. The rains are usually heavy. September as well as October is considered the most comfortable time to visit Incheon.

Links

Help Terms of use Contact us

For partners

Advertisement Yandex.Weather API

Weather forecasts

Hourly forecast Detailed 10 day forecast Monthly forecast Weather map Magnetic storms

Download app

English

English
Русский

Source data: Yandex.Traffic, Roshydromet FSBI "CAO", NOAA, © OpenStreetMap

© 2017–2025 YANDEX LLC