December weather forecast
Gunsan, South Korea

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Weather in December

Closing out the year, December in Gunsan initiates the winter season with colder temperatures and a significant reduction in daylight hours. With snowfall reappearing around 44mm (1.73") and the increased snowfall days about 8.1 days, the onset of winter is clearly marked. The sun sets early, presenting long, chilly nights indicative of the upcoming deep winter. Visibility tends to decline due to shorter days and inclement weather conditions. Despite the chilly atmosphere, the wintry cityscape invites exploration.

Temperature

Stepping into December, Gunsan observes a temperature decline, with the average high falling from November's fresh 12.6°C (54.7°F) to a wintry 5.7°C (42.3°F). In Gunsan, the December nights are characterized by an average low-temperature of 1.4°C (34.5°F), a minor dip from daytime readings.

Humidity

The average relative humidity in December in Gunsan is 68%.

Rainfall

In Gunsan, during December, the rain falls for 9.6 days and regularly aggregates up to 31mm (1.22") of precipitation. In Gunsan, during the entire year, the rain falls for 120.5 days and collects up to 749mm (29.49") of precipitation.

Snowfall

Months with snowfall are January through March, November and December. December is the month with the most snowfall in Gunsan. Snow falls for 8.1 days and accumulates 44mm (1.73") of snow.

Sea temperature

In Gunsan, South Korea, the average seawater temperature in December is 10.8°C (51.4°F).
Note: Swimming in 10.8°C (51.4°F) at temperatures under 10°C (50°F) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 13°C (55.4°F) feels frosty.

Daylight

December has the shortest days of the year in Gunsan, with an average of 9h and 48min of daylight.
On the first day of December, sunrise is at 07:25 and sunset at 17:19. On the last day of the month, sunrise is at 07:43 and sunset at 17:28 KST.

Sunshine

December has the least sunshine of the year, with an average of 4.6h of sunshine.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index in Gunsan. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 1 during December, leads to the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Updated: Jan 31, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

Is December cold in Gunsan?

The high-temperature, in December, in Gunsan, is 5.7°C (42.3°F), while the low-temperature averages to 1.4°C (34.5°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 December in Gunsan?

In Gunsan, the average relative humidity in December is 68%.

How many days does it rain in December in Gunsan?

In Gunsan, in December, during 9.6 rainfall days, 31mm (1.22") of precipitation is typically accumulated.

What is the snowiest month in Gunsan?

December is the month with the most snowfall in Gunsan. Snow falls for 8.1 days and accumulates 44mm (1.73") of snow.

How many days does it snow in December in Gunsan?

In Gunsan, South Korea, in December, during 8.1 snowfall days, 44mm (1.73") of snow is typically accumulated.

What is the sea water temperature in December in Gunsan?

In Gunsan, South Korea, the average seawater temperature in December is 10.8°C (51.4°F). Swimming in 10.8°C (51.4°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Gunsan?

With an average of 9h and 48min of daylight, December has the shortest days of the year in Gunsan.

How many hours of daylight does Gunsan have in December?

In Gunsan, the average day length in December is 9h and 46min.

When is the sunrise / sunset in December in Gunsan?

In December, on the first day of the month, sunrise is at 07:25 and sunset at 17:19. On the last day of the month, in Gunsan, sunrise is at 07:43 and sunset at 17:28 KST.

What is the month with the least sunshine in Gunsan?

With an average of 4.6h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December in Gunsan?

In Gunsan, South Korea, the average sunshine duration in December is 4.6h.

When is the lowest UV index in Gunsan?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index intensity in December in Gunsan?

In Gunsan, South Korea, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.

Average temperature in December
Gunsan, South Korea

Average temperature in December - Gunsan, South Korea
  • Average high temperature in December: 5.7°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 December: 1.4°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 December
Gunsan, South Korea

Average pressure in December - Gunsan, South Korea
  • Average pressure in December: 1024.6mbar

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 December
Gunsan, South Korea

Average wind speed in December - Gunsan, South Korea
  • Average wind speed in December: 16.5km/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 December
Gunsan, South Korea

Average humidity in December - Gunsan, South Korea
  • Average humidity in December: 68%

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 December
Gunsan, South Korea

Average rainfall in December - Gunsan, South Korea
  • Average rainfall in December: 31mm

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

Average rainfall days in December
Gunsan, South Korea

Average rainfall days in December - Gunsan, South Korea
  • Average rainfall days in December: 9.6 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 December
Gunsan, South Korea

Average snowfall in December - Gunsan, South Korea
  • Average snowfall in December: 44mm

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 December
Gunsan, South Korea

Average snowfall days in December - Gunsan, South Korea
  • Average snowfall days in December: 8.1 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 December
Gunsan, South Korea

Average sea temperature in December - Gunsan, South Korea
  • Average sea temperature in December: 10.8°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 December /
Average sunshine in December
Gunsan, South Korea

Average daylight in December / Average sunshine in December - Gunsan, South Korea
  • Average daylight in December: 9h and 5min

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 December: 4h and 4min

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 December
Gunsan, South Korea

Average sunshine days in December - Gunsan, South Korea
  • Average sunshine days in December: 13.6 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 December
Gunsan, South Korea

Average UV index in December - Gunsan, South Korea
  • Average UV index in December: 1

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 December
Gunsan, South Korea

Average cloud cover in December - Gunsan, South Korea
  • Average cloud cover in December: 52

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 December
Gunsan, South Korea

Average visibility in December - Gunsan, South Korea
  • Average visibility in December: 9km

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

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