Cheonan
South Korea
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Cheonan, South Korea

September, the first month of the autumn, in Cheonan, is still a warm month, with average temperature fluctuating between 15°C (59°F) and 26°C (78.8°F).

Temperature

In September, the average high-temperature slightly decreases, from a hot 30.1°C (86.2°F) in August, to a moderately hot 26°C (78.8°F). In September, the average low-temperature is 15°C (59°F).

Humidity

The average relative humidity in Cheonan is 76.5%.

Rainfall

In September, the rain falls for 8.6 days. Throughout September, 158.4mm (6.2") of precipitation is accumulated. Throughout the year, in Cheonan, South Korea, there are 107.3 rainfall days, and 1226.4mm (48.3") of precipitation is accumulated.

Daylight

In September, the average length of the day in Cheonan is 12.4h.

Sunshine

In Cheonan, the average sunshine in September is 6.6h.

What is the temperature in September in Cheonan?

The average high-temperature, in September, in Cheonan, South Korea, is 26°C (78.8°F), while the average low-temperature is 15°C (59°F).

What is the average humidity in September in Cheonan?

In Cheonan, South Korea, the average relative humidity in September is 76.5%.

How much does it rain in Cheonan in September?

In Cheonan, South Korea, during September, the rain falls for 8.6 days and regularly aggregates up to 158.4mm (6.2") of precipitation.

What is the average length of the day in September in Cheonan?

The average length of the day in September is 12.4h.

How long on average sun shines in September in Cheonan?

In Cheonan, South Korea, the average sunshine in September is 6.6h.
Average temperature in September - Cheonan, South Korea
  • Average high temperature in September: 26°C

The warmest month (with the highest average high temperature) is August (30.1°C).
The month with the lowest average high temperature is January (2.5°C).

  • Average low temperature in September: 15°C

The month with the highest average low temperature is August (21°C).
The coldest month (with the lowest average low temperature) is January (-7.9°C).

Average humidity in September - Cheonan, South Korea
  • Average humidity in September: 76.5%

The month with the highest relative humidity is July (79.4%).
The month with the lowest relative humidity is April (62.1%).

Average rainfall in September - Cheonan, South Korea
  • Average rainfall in September: 158.4mm

The wettest month (with the highest rainfall) is August (298.3mm).
The driest month (with the lowest rainfall) is January (23.4mm).

Average rainfall days in September - Cheonan, South Korea
  • Average rainfall days in September: 8.6 days

The month with the highest number of rainy days is July (13.9 days).
The month with the lowest number of rainy days is October (6.2 days).

Average daylight in September / Average sunshine in September - Cheonan, South Korea
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in September: 6.6h

The month with most sunshine is May (Average sunshine: 8h).
The month with least sunshine is December (Average sunshine: 5.2h).