Weather in Seoul in January 2025
- January is usually the coldest month of the year in Seoul;
Average weather
Average temperature in Seoul in January
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:
Climate in Seoul in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| 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 mm | 10 mm | 17 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 2 m/s | ||||
| Humidity | ||||||
| 64% | 62% | 60% | ||||
| Air pressure | ||||||
| 1023 HPa | 1023 HPa | 1021 HPa | ||||
| Sunny days | ||||||
| 14 | 15 | 14 | ||||
| Cloudy days | ||||||
| 14 | 14 | 12 | ||||
| Rainy days | ||||||
| 2 | 1 | 1 | ||||
| Snowy days | ||||||
| 1 | 1 | 1 | ||||
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
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
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?
Climate Change Over the 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
Is January a good time to visit Seoul?
Can you sunbathe in Seoul in January?
Is Seoul rainy in January?
Is it sunny in Seoul in January?
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.