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Weather in Incheon for September 2027

Your guide to Incheon weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Incheon at the beginning of September is 29.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 25.5 °C by the end of September.

    • Rain 🌧️

  • The climate of Incheon in September is notably wet, with an average of 12 rainy days, and a total of 114.7 mm of precipitation.

    • More

  • Is September a good time to visit Incheon? check out the best time to travel to Incheon page.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/19°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Incheon Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
30°
2
Light rain
29°
3
Light rain
30°
4
Partly cloudy
31°
5
Sunny
30°
6
Light drizzle
29°
7
Light rain
29°
8
Cloudy
29°
9
Light rain
28°
10
Light rain
29°
11
Patchy light drizzle
30°
12
Light rain
29°
13
Light rain
29°
14
Overcast
30°
15
Light rain
28°
16
Patchy rain possible
30°
17
Light rain
29°
18
Light rain
29°
19
Overcast
28°
20
Heavy rain
27°
21
Moderate rain
27°
22
Light drizzle
25°
23
Partly cloudy
25°
24
Light rain
27°
25
Light rain
25°
26
Moderate rain
24°
27
Mist
26°
28
Light drizzle
25°
29
Patchy rain possible
25°
30
Patchy rain possible
26°

Temperatures trend during September in Incheon

See the weather trend as well as the moving average line

September weather in Incheon day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 30° /22° 1.9 mm 5
2 Sept. Light rain
Light rain
 29° /21° 3 mm 5
3 Sept. Light rain
Light rain
 30° /22° 2.5 mm 5
4 Sept. Partly cloudy
Partly cloudy
 31° /21° 0.9 mm 8
5 Sept. Sunny
Sunny
 30° /20° 0 mm 8
6 Sept. Light drizzle
Light drizzle
 29° /21° 0.9 mm 7
7 Sept. Light rain
Light rain
 29° /20° 7.4 mm 7
8 Sept. Cloudy
Cloudy
 29° /20° 0.5 mm 7
9 Sept. Light rain
Light rain
 28° /19° 4.4 mm 7
10 Sept. Light rain
Light rain
 29° /19° 8.4 mm 7
11 Sept. Patchy light drizzle
Patchy light drizzle
 30° /21° 0.3 mm 7
12 Sept. Light rain
Light rain
 29° /20° 2.5 mm 7
13 Sept. Light rain
Light rain
 29° /21° 4.3 mm 6
14 Sept. Overcast
Overcast
 30° /20° 0.1 mm 6
15 Sept. Light rain
Light rain
 28° /20° 4.1 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 30° /20° 0.4 mm 6
17 Sept. Light rain
Light rain
 29° /20° 4.5 mm 5
18 Sept. Light rain
Light rain
 29° /21° 2.8 mm 5
19 Sept. Overcast
Overcast
 28° /20° 0.3 mm 7
20 Sept. Heavy rain
Heavy rain
 27° /20° 26.1 mm 6
21 Sept. Moderate rain
Moderate rain
 27° /18° 16.2 mm 6
22 Sept. Light drizzle
Light drizzle
 25° /18° 1.1 mm 6
23 Sept. Partly cloudy
Partly cloudy
 25° /17° 0.1 mm 6
24 Sept. Light rain
Light rain
 27° /17° 2.5 mm 4
25 Sept. Light rain
Light rain
 25° /19° 2.7 mm 4
26 Sept. Moderate rain
Moderate rain
 24° /18° 14.4 mm 4
27 Sept. Mist
Mist
 26° /18° 0.9 mm 4
28 Sept. Light drizzle
Light drizzle
 25° /18° 1.6 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 25° /17° 0 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 26° /16° 0 mm 6
Next
Important Notice
Our weather forecast for Incheon in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Incheon forecast closer to your planned date for the most up-to-date weather information.
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Incheon in September - FAQ

What are the expected maximum and minimum temperatures in Incheon during September?
During September, expect a variety of temperatures with highs around 28° and lows near 19°, suitable for diverse activities and preferences.

How much rainfall should be expected in Incheon during September?
Significant rainfall exceeding 114.7 mm is expected in Incheon during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Incheon during September?
The average wind speed in Incheon during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Incheon

Explore the daily rainfall trends and prepare for Incheons September weather 💧
Typically, Incheon has 12 rainy days in September with a total of 114.7 mm of rainfall.

UV exposure in Incheon during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Get accurate weather forecasts for Incheon, located at latitude 35.073 and longitude 126.7. Stay updated with localized weather information tailored for Incheon.

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