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Seoul in January: Weather, Average temperature and Climate

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

Weather in Seoul in January 2025

Good Weather
Chill
☀️
Sunny
✈️
$1,687 - $1,923
Are you considering a trip to Seoul in January? Well, the weather is usually on your side with an average maximum temperature of +36°F and about 15 sunny days. Just keep in mind that there may be some rain, with an average of 1 rainy days and 10 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • January is usually the coldest month of the year in Seoul;

Average weather

☀️
+36°F
Avg. max. temperature
-9°F
Min.
+59°F
Max.
10 mm
Total precipitation
62%
Avg. humidity
1 m/s
Avg. wind
15 ☀️
Sunny Days
14 ⛅️
Cloudy
1 🌦
Rainy
Our opinion: Seoul has good weather in January.

Average temperature in Seoul in January

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

Going from a maximum of +46°F during the day to a minimum of +9°F during the night, the temperature in January averages around +36°F.

The average maximum temperature goes up 14% by the end of the month, compared with the beginning of the month, from +36°F to +41°F.

Is Seoul warm or cold in January?

Seoul is typically chill in January.

Maximum temperatures go down compared to the previous month from +39°F to +36°F. The minimum temperature also goes down from +23°F to +18°F.

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

January is the coldest month in Seoul, here is the comparison with other months:

Travel to Seoul

Click to see more details
✈️
24
Flights per week
$1,687
Min. Price
$1,923
Max. Price

Climate in Seoul in January

Seoul weather looks like this, on average, in January and the surrounding months.
DecemberJanuaryFebruary
Avg. temperature
+39°F+36°F+41°F
Min. temperature
0°F-9°F-2°F
Max. temperature
+63°F+59°F+66°F
Rainfall
14 mm10 mm17 mm
Wind
1 m/s1 m/s2 m/s
Humidity
64%62%60%
Air pressure
1023 HPa1023 HPa1021 HPa
Sunny days
141514
Cloudy days
141412
Rainy days
211
Snowy days
111

January weather is still as good as in December. It’s getting colder in January. From +39°F in the day, the average maximum temperature lowers to +36°F. As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 14 mm to 10 mm. It feels drier, as humidity decreases from 64% to 62%. The average wind speed doesn’t change much during January, staying around 1 m/s. The good news is there are likely to be more sunny days in January, from 14 to 15.

February brings much the same weather, it remains good.

Wind

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

The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Seoul is gradually increasing during January, going from 1 m/s to 2 m/s over the course of the month.

Snow

Amount of snow in mm during January in Seoul based on historical data.
Last Year
Historical Data
The chance of snow on a typical day in January is 3%, for a monthly total of around 4 mm.

January is one of the snowiest months in Seoul.

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

How was the weather last January in Seoul?

This is the weather in Seoul in January 2023:
1 January
☀️
+35°F
2 January
☀️
+39°F
3 January
☀️
+36°F
4 January
☀️
+34°F
5 January
☀️
+35°F
6 January
☀️
+37°F
7 January
☀️
+39°F
8 January
🌫️
+39°F
9 January
🌫️
+41°F
10 January
🌫️
+40°F
11 January
☀️
+24°F
12 January
☀️
+26°F
13 January
☀️
+26°F
14 January
☀️
+33°F
15 January
☁️
+37°F
16 January
☀️
+33°F
17 January
☀️
+32°F
18 January
☀️
+31°F
19 January
☀️
+27°F
20 January
☀️
+35°F
21 January
☀️
+41°F
22 January
☀️
+42°F
23 January
☀️
+44°F
24 January
☀️
+47°F
25 January
🌫️
+41°F
26 January
☀️
+43°F
27 January
☀️
+39°F
28 January
☀️
+35°F
29 January
☀️
+35°F
30 January
☀️
+36°F
31 January
🌨️
+41°F
In January 2023 Seoul had 25 sunny days, 1 cloudy days, and 0 rainy days. The average maximum temperature was +36°F, with an absolute maximum of +46°F and a minimum of +25°F. The average humidity was 57%, with a maximum of 97% 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 January?

Climate Change Over the Years

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

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

The average temperature was the lowest in 2011 (+28°F) and the highest in 2020 (+45°F). The driest year was 2012 with only 0 mm of rainfall, and the wettest year was 2022 with 0 mm.

FAQ

Frequently asked questions about the weather in Seoul in January:

Is January a good time to visit Seoul?

January 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 January?

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

Is Seoul rainy in January?

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

Is it sunny in Seoul in January?

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

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

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.