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Weather in Yongin-si for September 2025

Your guide to Yongin-si weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Yongin-si at the beginning of September is 28.4 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 25.7 °C by the end of September.

    • Rain 🌧️

  • Yongin-si in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 262 mm.

Average dry days
12
Dry days
Average rainy days
18
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/20°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Yongin-si Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
30°
2
Moderate or heavy rain shower
23°
3
Overcast
29°
4
Sunny
30°
5
Moderate rain at times
29°
6
Moderate rain at times
27°
7
Patchy rain possible
31°
8
Sunny
32°
9
Cloudy
31°
10
Patchy rain possible
33°
11
Moderate or heavy rain shower
35°
12
Moderate or heavy rain shower
26°
13
Moderate or heavy rain shower
26°
14
Heavy rain at times
29°
15
Patchy rain possible
29°
16
Patchy rain possible
31°
17
Moderate or heavy rain shower
30°
18
Moderate or heavy rain shower
29°
19
Moderate or heavy rain shower
30°
20
Moderate or heavy rain shower
27°
21
Moderate or heavy rain shower
19°
22
Patchy rain possible
23°
23
Sunny
23°
24
Cloudy
24°
25
Patchy rain possible
25°
26
Patchy rain possible
26°
27
Overcast
26°
28
Patchy rain possible
26°
29
Sunny
26°
30
Partly cloudy
27°

Temperatures trend during September in Yongin-si

See the weather trend as well as the moving average line

September weather in Yongin-si day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 30° /21° 0 mm 7
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /20° 16.7 mm 5
3 Sept. Overcast
Overcast
 29° /20° 0 mm 6
4 Sept. Sunny
Sunny
 30° /19° 0 mm 8
5 Sept. Moderate rain at times
Moderate rain at times
 29° /22° 1.5 mm 6
6 Sept. Moderate rain at times
Moderate rain at times
 27° /22° 3.8 mm 6
7 Sept. Patchy rain possible
Patchy rain possible
 31° /21° 0.5 mm 7
8 Sept. Sunny
Sunny
 32° /21° 0 mm 8
9 Sept. Cloudy
Cloudy
 31° /22° 0 mm 7
10 Sept. Patchy rain possible
Patchy rain possible
 33° /23° 0.6 mm 7
11 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 35° /23° 11.4 mm 7
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 26° /23° 18.3 mm 6
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 26° /22° 13.2 mm 6
14 Sept. Heavy rain at times
Heavy rain at times
 29° /22° 10.1 mm 6
15 Sept. Patchy rain possible
Patchy rain possible
 29° /22° 0.7 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 31° /20° 0.2 mm 7
17 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /24° 15.1 mm 7
18 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /23° 5.6 mm 6
19 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 30° /24° 3.5 mm 7
20 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /17° 88.2 mm 6
21 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /16° 70.1 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 23° /17° 0.7 mm 5
23 Sept. Sunny
Sunny
 23° /13° 0 mm 6
24 Sept. Cloudy
Cloudy
 24° /14° 0 mm 5
25 Sept. Patchy rain possible
Patchy rain possible
 25° /16° 0.6 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 26° /19° 0.8 mm 6
27 Sept. Overcast
Overcast
 26° /17° 0.2 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 26° /17° 0.1 mm 6
29 Sept. Sunny
Sunny
 26° /16° 0 mm 7
30 Sept. Partly cloudy
Partly cloudy
 27° /17° 0 mm 7
Next
Important Notice
Our weather forecast for Yongin-si 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 Yongin-si forecast closer to your planned date for the most up-to-date weather information.
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Yongin-si in September - FAQ

What are the expected maximum and minimum temperatures in Yongin-si during September?
During September, expect a variety of temperatures with highs around 28° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Yongin-si during September?
Significant rainfall exceeding 262 mm is expected in Yongin-si during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Yongin-si during September?
The average wind speed in Yongin-si during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Yongin-si

Explore the daily rainfall trends and prepare for Yongin-sis September weather 💧

UV exposure in Yongin-si during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Yongin-si?

Get accurate weather forecasts for Yongin-si, located at latitude 37.296 and longitude 127.231. Stay updated with localized weather information tailored for Yongin-si.

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