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Cheonan-si (Cheonan)
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Weather in Cheonan-si for September 2026

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

    Temperatures

  • In general, the average temperature in Cheonan-si at the beginning of September is 28.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.6 °C by the end of September.

    • Rain 🌧️

  • Cheonan-si in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 288.3 mm.

Average dry days
10
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/20°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Cheonan-si Weather September

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

Temperatures trend during September in Cheonan-si

See the weather trend as well as the moving average line

September weather in Cheonan-si day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 28° /21° 8.8 mm 6
2 Sept. Light rain shower
Light rain shower
 28° /21° 3.3 mm 6
3 Sept. Cloudy
Cloudy
 31° /19° 1 mm 7
4 Sept. Light rain shower
Light rain shower
 27° /21° 9.4 mm 6
5 Sept. Patchy rain possible
Patchy rain possible
 31° /19° 0.2 mm 7
6 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 29° /22° 5.4 mm 6
7 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 23° /16° 17.5 mm 5
8 Sept. Overcast
Overcast
 27° /17° 0 mm 6
9 Sept. Patchy rain possible
Patchy rain possible
 29° /19° 1.4 mm 7
10 Sept. Patchy rain possible
Patchy rain possible
 30° /18° 0.1 mm 7
11 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 31° /20° 8.2 mm 7
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 25° /21° 27.3 mm 6
13 Sept. Moderate rain at times
Moderate rain at times
 27° /21° 21 mm 6
14 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /21° 4 mm 7
15 Sept. Patchy rain possible
Patchy rain possible
 30° /20° 0.4 mm 7
16 Sept. Partly cloudy
Partly cloudy
 30° /21° 4.4 mm 7
17 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /20° 12.2 mm 6
18 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 27° /19° 4 mm 6
19 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 25° /18° 12.3 mm 6
20 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 25° /18° 52.1 mm 6
21 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /16° 41.1 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 23° /15° 0.6 mm 5
23 Sept. Partly cloudy
Partly cloudy
 24° /14° 0 mm 6
24 Sept. Overcast
Overcast
 25° /15° 6.3 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 24° /17° 3.2 mm 6
26 Sept. Heavy rain at times
Heavy rain at times
 25° /17° 1.2 mm 7
27 Sept. Patchy rain possible
Patchy rain possible
 26° /16° 0.2 mm 6
28 Sept. Overcast
Overcast
 23° /17° 7.8 mm 6
29 Sept. Sunny
Sunny
 25° /15° 0 mm 6
30 Sept. Partly cloudy
Partly cloudy
 24° /14° 0 mm 7
Next
Important Notice
Our weather forecast for Cheonan-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 Cheonan-si forecast closer to your planned date for the most up-to-date weather information.
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Cheonan-si in September - FAQ

What are the expected maximum and minimum temperatures in Cheonan-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 Cheonan-si during September?
Significant rainfall exceeding 288.3 mm is expected in Cheonan-si during September, occurring over more than 20 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cheonan-si during September?
The average wind speed in Cheonan-si during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Cheonan-si

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

UV exposure in Cheonan-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 Cheonan-si?

Get accurate weather forecasts for Cheonan-si, located at latitude 36.807 and longitude 127.152. Stay updated with localized weather information tailored for Cheonan-si.

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