September weather forecast
Gunsan, South Korea

englishespañol中文
Share

Weather in September

September in Gunsan is a transitional period between summer and autumn, making it one of the best months to visit the city. The drop in temperature becomes more evident, indicating the wrap-up of the summer season. The humidity follows a declining trend, creating a more comfortable atmosphere. The city's landscape starts to feature autumnal hues, adding a picturesque charm to the surroundings. Less rainfall, complemented with moderate temperatures, makes the overall weather agreeable.

Temperature

With the commencement of September, Gunsan records a moderate temperature decline, with the average high easing from August's warm 28.1°C (82.6°F) to a still moderately hot 24.1°C (75.4°F). An average low-temperature of 18.6°C (65.5°F) is expected in Gunsan during September.

Humidity

The average relative humidity in September in Gunsan is 76%.

Rainfall

In Gunsan, in September, during 9.5 rainfall days, 74mm (2.91") of precipitation is typically accumulated. In Gunsan, during the entire year, the rain falls for 120.5 days and collects up to 749mm (29.49") of precipitation.

Snowfall

In Gunsan, snow does not fall in April through October.

Sea temperature

In Gunsan, in September, the average water temperature is 22.4°C (72.3°F).
Note: Think about diving into 22.4°C (72.3°F) waters. Factors like your sensitivity to cold, the brightness of the sun, wind conditions, and the day's warmth play a role. For reference, Olympic swimming competitions use waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

In Gunsan, South Korea, the average length of the day in September is 12h and 25min.
On the first day of September in Gunsan, sunrise is at 06:04 and sunset at 19:01. On the last day of the month, sunrise is at 06:27 and sunset at 18:18 KST.

Sunshine

The average sunshine in September is 8.1h.

UV index

In Gunsan, South Korea, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index, 5 during September, leads to the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Caution! The Sun's UV intensity grows with reflections off sand and water.
Updated: Jan 31, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the temperature in September in Gunsan?

The average high-temperature, in September, in Gunsan, is 24.1°C (75.4°F), while the average low-temperature is 18.6°C (65.5°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 33°C (91.4°F).

What is the average humidity in September in Gunsan?

In September, the average relative humidity in Gunsan is 76%.

How much does it rain in Gunsan in September?

In Gunsan, in September, during 9.5 rainfall days, 74mm (2.91") of precipitation is typically accumulated.

When it does not snow in Gunsan?

In Gunsan, snow does not fall in April through October.

How warm is the water in September in Gunsan?

In Gunsan, South Korea, the average seawater temperature in September is 22.4°C (72.3°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 22.4°C (72.3°F) water.

How many hours of daylight does Gunsan have in September?

The average day length in September in Gunsan is 12h and 25min.

When are sunrise and sunset in September in Gunsan?

In September, on the first day of the month, sunrise is at 06:04 and sunset at 19:01. On the last day of the month, in Gunsan, sunrise is at 06:27 and sunset at 18:18 KST.

How many hours of sunshine does Gunsan have in September?

In Gunsan, South Korea, the average sunshine duration in September is 8.1h.

What is the UV index reading in September in Gunsan?

In September, the average daily maximum UV index in Gunsan is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Gunsan, South Korea

Average temperature in September - Gunsan, South Korea
  • Average high temperature in September: 24.1°C

The warmest month (with the highest average high temperature) is August (28.1°C).
The month with the lowest average high temperature is January (3.5°C).

  • Average low temperature in September: 18.6°C

The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (-1°C).

Average pressure in September
Gunsan, South Korea

Average pressure in September - Gunsan, South Korea
  • Average pressure in September: 1013.8mbar

The month with the highest atmospheric pressure is January (1025.6mbar).
The month with the lowest atmospheric pressure is July (1007.1mbar).

Average wind speed in September
Gunsan, South Korea

Average wind speed in September - Gunsan, South Korea
  • Average wind speed in September: 11km/h

The windiest month (with the highest average wind speed) is December (16.5km/h).
The calmest month (with the lowest average wind speed) is June (9.6km/h).

Average humidity in September
Gunsan, South Korea

Average humidity in September - Gunsan, South Korea
  • Average humidity in September: 76%

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are February and March (64%).

Average rainfall in September
Gunsan, South Korea

Average rainfall in September - Gunsan, South Korea
  • Average rainfall in September: 74mm

The wettest month (with the highest rainfall) is July (184mm).
The driest month (with the least rainfall) is January (19mm).

Average rainfall days in September
Gunsan, South Korea

Average rainfall days in September - Gunsan, South Korea
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (5 days).

Average snowfall in September
Gunsan, South Korea

Average snowfall in September - Gunsan, South Korea
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (44mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September
Gunsan, South Korea

Average snowfall days in September - Gunsan, South Korea
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September
Gunsan, South Korea

Average sea temperature in September - Gunsan, South Korea
  • Average sea temperature in September: 22.4°C

The best month for swimming (with the highest average sea temperature) is August (25.2°C).
The coldest month (with the lowest average sea temperature) is February (5.3°C).

Average daylight in September /
Average sunshine in September
Gunsan, South Korea

Average daylight in September / Average sunshine in September - Gunsan, 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 48min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

Average sunshine days in September
Gunsan, South Korea

Average sunshine days in September - Gunsan, South Korea
  • Average sunshine days in September: 18.7 days

The month with the most sunshine days is October (23.2 days).
The month with the least sunshine days is July (9.9 days).

Average UV index in September
Gunsan, South Korea

Average UV index in September - Gunsan, South Korea
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September
Gunsan, South Korea

Average cloud cover in September - Gunsan, South Korea
  • Average cloud cover in September: 32

The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 26).

Average visibility in September
Gunsan, South Korea

Average visibility in September - Gunsan, South Korea
  • Average visibility in September: 10km

The months with the highest visibility are February, March, April, May, June, September, October and November (10km).
The months with the lowest visibility are January, July, August and December (9km).

Gunsan, South Korea

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location