Incheon in september: average Weather, Temperature and Climate
Weather in Incheon in september 2025
The weather in Incheon in september comes from statistical datas on the last years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather UV index: 6
Weather at 6am
68°F
Clear/Sunny
45% of time
24%
16%
10%
Weather at 12pm
77°F
Clear/Sunny
50% of time
25%
13%
8%
Weather at 6pm
76°F
Clear/Sunny
49% of time
27%
14%
7%
Weather at 3am
70°F
47%
24%
14%
9%
Evolution of daily average temperature and precipitation in Incheon in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Incheon in september.
The climate of Incheon in september is good
In september in Incheon, the climate is relatively dry (with 6.2in of rainfall over 5 days). The weather is better from the previous month since in august it receives an average of 12.8in of rainfall over 11 days.
The climate quite enjoyable in this city the month of september. Temperatures are up to 79°F. The seasonal minimum is 68°F. Thus, the mean temperature average in september in Incheon is 74°F. Note that seasonal normals in contrast with those observed in Incheon in the month of september with a maximum record of 92°F in 2021 and a minimum record of 52°F in 2010. You You can hope to have about 2 days with temperatures above 86°F, or 7 of the month.
In september in Incheon, the days on average last 12:26. The sun rises at 06:15 and sunset is at 18:41.
With good weather conditions, the month of september is a good month to go in this city in South Korea.
Seasonal average climate and temperature of Incheon in september
Check below seasonal norms These statistics are generated from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 74°F | ||||
| Highest temperature | 79°F | ||||
| Lowest temperature | 68°F | ||||
| Highest record temperature | 92°F (2021) | ||||
| Lowest record temperature | 52°F (2010) | ||||
| Number of days at +86°F | 2 day(s) (7%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 72°F | ||||
| Lowest sea temperature | 69°F | ||||
| Highest sea temperature | 75°F | ||||
| Wind | |||||
| Wind speed | 14km/h | ||||
| Wind temperature | 68°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 6.2in | ||||
| Number of days with rainfall | 5 day(s) (16%) | ||||
| Record daily rainfall | 4.5in (2010) | ||||
| Other climate data | |||||
| Humidity | 79% | ||||
| Visibility | 9.51km | ||||
| Cloud cover | 32% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:15 | ||||
| Time of sunset | 18:41 | ||||
| Length of day | 12:26 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Incheon in september 2024:
76°F to 85°F
74°F to 77°F
76°F to 85°F
76°F to 86°F
76°F to 85°F
77°F to 83°F
76°F to 85°F
76°F to 86°F
77°F to 88°F
77°F to 88°F
77°F to 92°F
79°F to 83°F
74°F to 76°F
76°F to 85°F
76°F to 86°F
74°F to 90°F
79°F to 86°F
79°F to 86°F
79°F to 86°F
79°F to 83°F
63°F to 68°F
67°F to 74°F
63°F to 76°F
65°F to 79°F
67°F to 79°F
72°F to 79°F
70°F to 81°F
70°F to 83°F
68°F to 81°F
70°F to 79°F
Map: other cities in South Korea in september
Cities near Incheon:
| Ansan-si in september | good weather |
| Goyang-si in september | good weather |
| Seoul in september | good weather |
| Hwaseong-si in september | good weather |
| Osan in september | perfect weather |
| Namyangju in september | good weather |
| Yangju in september | good weather |
| Icheon-si in september | good weather |
| Yangp'yong in september | good weather |
| Anseong in september | good weather |
| Seosan in september | good weather |
| Asan in september | good weather |
Click over cities on the map for information about the weather in september.
Incheon
perfect weather
good
tolerable
bad
very bad
Weather data for Incheon in september:
Weather data for Incheon for september are derived from an average of the weather forecast since 2009 in Incheon. There is a margin of error and these forecasts are to be considered as general information only. The weather in Incheon can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Incheon.