Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September brings a minor shift in the average high-temperature, adjusting from 28.9°C (84°F) in August to a still moderately hot 24.5°C (76.1°F). Cheonan usually reports an average low-temperature of 15°C (59°F) during the month of September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Cheonan, in September, it is raining for 9.2 days, with typically 61mm (2.4") of accumulated precipitation. Throughout the year, in Cheonan, there are 121.9 rainfall days, and 694mm (27.32") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 06:02 and sunset at 19:00. On the last day of September, sunrise is at 06:26 and sunset at 18:16 KST.
Sunshine
In September, the average sunshine in Cheonan, South Korea, is 8.2h.UV index
In September, the average daily maximum UV index in Cheonan is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A daily high UV index of 5 in September leads to these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the usual temperature for Cheonan in September?
What is the average humidity in September in Cheonan?
How many days does it rain in September in Cheonan?
When it does not snow in Cheonan?
How many hours of daylight does Cheonan have in September?
When is the sunrise / sunset in September in Cheonan?
How long on average sun shines in September in Cheonan?
What is the UV index intensity in September in Cheonan?
Average temperature in September
Cheonan, South Korea
- Average high temperature in September: 24.5°C
The warmest month (with the highest average high temperature) is August (28.9°C).
The month with the lowest average high temperature is January (1.1°C).
- Average low temperature in September: 15°C
The month with the highest average low temperature is August (20.7°C).
The coldest month (with the lowest average low temperature) is January (-5.7°C).
Average pressure in September
Cheonan, South Korea
- Average pressure in September: 1014mbar
The month with the highest atmospheric pressure is January (1025.4mbar).
The month with the lowest atmospheric pressure is July (1007.1mbar).
Average wind speed in September
Cheonan, South Korea
- Average wind speed in September: 6.7km/h
The windiest month (with the highest average wind speed) is March (10.6km/h).
The calmest month (with the lowest average wind speed) is September (6.7km/h).
Average humidity in September
Cheonan, South Korea
- Average humidity in September: 80%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are February and March (62%).
Average rainfall in September
Cheonan, South Korea
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is July (167mm).
The driest month (with the least rainfall) is January (16mm).
Average rainfall days in September
Cheonan, South Korea
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (22.2 days).
The month with the least rainy days is February (4.7 days).
Average snowfall in September
Cheonan, South Korea
- Average snowfall in September: 0mm
The month with the highest snowfall is December (35mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Cheonan, South Korea
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Cheonan, South Korea
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are May and June (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in September
Cheonan, South Korea
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is October (24.5 days).
The month with the least sunshine days is July (7 days).
Average UV index in September
Cheonan, South Korea
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Cheonan, South Korea
- Average cloud cover in September: 33
The month with the most cloud cover is July (Cloud cover 54).
The month with the least cloud cover is October (Cloud cover 25).
Average visibility in September
Cheonan, South Korea
- Average visibility in September: 9km
The months with the highest visibility are February, March, October and November (10km).
The month with the lowest visibility is July (7km).
Cheonan, South Korea
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