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Seoul in December: Weather, Average temperature and Climate

Take a look at past year’s weather for Seoul in December and see if it is worth visiting.
Check flight prices to Seoul on Avionero:

Weather in Seoul in December 2024

Good Weather
$1,687 - $1,923
Are you considering a trip to Seoul in December? Well, the weather is usually on your side with an average maximum temperature of +39°F and about 14 sunny days. Just keep in mind that there may be some rain, with an average of 2 rainy days and 14 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

Avg. max. temperature
14 mm
Total precipitation
Avg. humidity
1 m/s
Avg. wind
14 ☀️
Sunny Days
14 ⛅️
2 🌦
Our opinion: Seoul has good weather in December.

Average temperature in Seoul in December

Here are the expected maximum, average and minimum temperatures in Seoul for December based on the historical data.
Last Year
Historical Data

Going from a maximum of +50°F during the day to a minimum of +7°F during the night, the temperature in December averages around +34°F.

The average maximum temperature goes up 21% by the end of the month, compared with the beginning of the month, from +28°F to +37°F.

Is Seoul warm or cold in December?

Seoul is typically chill in December.

Maximum temperatures go down compared to the previous month from +54°F to +39°F. The minimum temperature also goes down from +36°F to +23°F.

Pack a jumper and a jacket as there will be cooler temperatures.

December is one of the coolest months in Seoul, here is the comparison with other months:

Travel to Seoul

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Flights per week
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Climate in Seoul in December

Seoul weather looks like this, on average, in December and the surrounding months.
Avg. temperature
Min. temperature
Max. temperature
44 mm14 mm10 mm
1 m/s1 m/s1 m/s
Air pressure
1021 HPa1023 HPa1023 HPa
Sunny days
Cloudy days
Rainy days
Snowy days

December weather is still as good as in November. It’s getting colder in December. From +54°F in the day, the average maximum temperature lowers to +39°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 44 mm to 14 mm. It feels drier, as humidity decreases from 66% to 64%. The average wind speed doesn’t change much during December, staying around 1 m/s. The good news is there are likely to be more sunny days in December, from 12 to 14.

January brings much the same weather, it remains good.


Wind speed in Seoul in December based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Seoul is gradually increasing during December, going from 2 m/s to 2 m/s over the course of the month.


Amount of rainfall in mm during December in Seoul based on historical data.
Last Year
Historical Data
Typically, there is a 6% chance of rain on an average day in December, with total rainfall of approximately 2 mm. The maximum amount of rainfall per day is around 1 mm, which is considered light rain. Seoul is amazing in December with as little as 2 rainy days on average, so plan adventures in the great outdoors.
Here’s how December is compared with other months in the amount of precipitation, total mm:
Seoul wettest month is July, where a typical day has a 35% chance of precipitation and 261 mm of rainfall per day. January, on the other hand, is the driest month with a mere 3% chance of precipitation and 10 mm of rainfall per day.


Amount of snow in mm during December in Seoul based on historical data.
Last Year
Historical Data
The chance of snow on a typical day in December is 0%, for a monthly total of around 13 mm.

December is one of the snowiest months in Seoul.

Here’s how December is compared with other months in the amount of snow, total mm:

How was the weather last December in Seoul?

This is the weather in Seoul in December 2023:
1 December
2 December
3 December
4 December
5 December
6 December
7 December
8 December
9 December
10 December
11 December
12 December
13 December
14 December
15 December
16 December
17 December
18 December
19 December
20 December
21 December
22 December
23 December
24 December
25 December
26 December
27 December
28 December
29 December
30 December
31 December
In December 2023 Seoul had 27 sunny days, 2 cloudy days, and 1 rainy days. The average maximum temperature was +34°F, with an absolute maximum of +50°F and a minimum of +16°F. The average humidity was 61%, with a maximum of 100% and a minimum of 21%. The average wind speed was 2 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in December?

Climate Change Over the Years

This is how Seoul climate has changed over the last 43 years.

The climate in Seoul in December has not changed that much over the last 43 years.

The average temperature was the lowest in 2012 (+32°F) and the highest in 1986 (+45°F). The driest year was 2014 with only 1 mm of rainfall, and the wettest year was 2005 with 0 mm.


Frequently asked questions about the weather in Seoul in December:

Is December a good time to visit Seoul?

December is a really good time to go to Seoul. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Seoul.

Can you sunbathe in Seoul in December?

Not really, December is not the best time to sunbathe, unless you visit a local solarium.

Is Seoul rainy in December?

Seoul is usually dry in December. Plan your packing around outdoor activities and exploring.

Is it sunny in Seoul in December?

The amount of sunny days in Seoul during December varies; prepare for a mix of clouds and sun.

How much does it cost to fly to Seoul in December?

The normal prices to fly to Seoul is $1,687 - $1,923. It means that the majority of our users have picked flights in this range. To find the best price we recommend you search early, using our flexible dates feature.

Monthly weather in Seoul

Source of the data

For this page, we’ve looked at the typical weather in Seoul, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.