Yongin-si (Everland)
September
Weather in Yongin-si for September 2025
Your guide to Yongin-si weather in September - trends and predictions
Heavy Rain Advisory - See hour by hour.
Until now, September 2025 in Yongin-si is slightly cooler than the historical average by -0.9 °C.
The forecast for the next days in Yongin-si predicts a temperature of 25.1 °C, which is cooler than the historical average.
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 25.9 °C by the end of September.
The climate of Yongin-si in September is notably wet, with an average of 12 rainy days, and a total of 262 mm of precipitation.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
18
Dry days
12
Rainy days
0
Snow days
28°/20°
Temperatures
10 km/h
Avg max wind
73 %
Avg humidity
Yongin-si Weather September
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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
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Overcast | 27° /21° | 5.2 mm | 6 | |
| 2 Sept. |  Moderate or heavy rain shower | 27° /20° | 9.2 mm | 6 | |
| 3 Sept. | Overcast | 30° /20° | 0 mm | 7 | |
| 4 Sept. |  Sunny | 29° /20° | 4 mm | 7 | |
| 5 Sept. | Moderate rain at times | 30° /21° | 0.8 mm | 7 | |
| 6 Sept. | Moderate rain at times | 28° /22° | 5.6 mm | 6 | |
| 7 Sept. |  Patchy rain possible | 28° /19° | 0.8 mm | 7 | |
| 8 Sept. | Sunny | 31° /20° | 0 mm | 8 | |
| 9 Sept. |  Cloudy | 30° /20° | 0 mm | 7 | |
| 10 Sept. | Patchy rain possible | 32° /20° | 0.3 mm | 8 | |
| 11 Sept. | Moderate or heavy rain shower | 33° /20° | 5.7 mm | 8 | |
| 12 Sept. | Moderate or heavy rain shower | 25° /21° | 24.8 mm | 6 | |
| 13 Sept. | Moderate or heavy rain shower | 26° /20° | 23.6 mm | 6 | |
| 14 Sept. |  Heavy rain at times | 29° /20° | 5.1 mm | 6 | |
| 15 Sept. | Patchy rain possible | 29° /21° | 0.3 mm | 6 | |
| 16 Sept. | Patchy rain possible | 31° /20° | 0.2 mm | 7 | |
| 17 Sept. |  Moderate rain | 23° /18° | 11.4 mm | 0.3 | |
| 18 Sept. | Patchy rain possible | 25° /17° | 0.2 mm | 0.8 | |
| 19 Sept. | Patchy rain possible | 21° /16° | 2.6 mm | 1 | |
| 20 Sept. | Patchy rain possible | 26° /16° | 1.1 mm | 0.4 | |
| 21 Sept. | Patchy rain possible | 27° /16° | 0.6 mm | 5 | |
| 22 Sept. | Cloudy | 25° /17° | 0 mm | 5 | |
| 23 Sept. |  Partly cloudy | 23° /16° | 0 mm | 5 | |
| 24 Sept. | Partly cloudy | 24° /17° | 0 mm | 5 | |
| 25 Sept. | Partly cloudy | 26° /16° | 0 mm | 6 | |
| 26 Sept. | Partly cloudy | 27° /19° | 0 mm | 6 | |
| 27 Sept. | Partly cloudy | 28° /18° | 0 mm | 6 | |
| 28 Sept. | Sunny | 27° /18° | 0 mm | 6 | |
| 29 Sept. | Sunny | 24° /15° | 0 mm | 5 | |
| 30 Sept. | Sunny | 25° /14° | 0 mm | 5 | |
| 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 12 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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