Weather in Seoul in December 2024
Average weather
Average temperature in Seoul in December
The temperature in December is +5°C on average, with a range between a maximum of +16°C during the day and a minimum of -14°C at night.
The average maximum temperature goes up 13% by the end of the month, compared with the beginning of the month, from +2°C to +6°C.
Is Seoul warm or cold in December?
Seoul is typically cool in December.
Maximum temperatures go down compared to the previous month from +11°C to +4°C. The minimum temperature also goes down from +2°C to -5°C.
Pack a sweater 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:
Climate in Seoul in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +11°C | +4°C | +2°C | ||||
| Min. temperature | ||||||
| -11°C | -18°C | -23°C | ||||
| Max. temperature | ||||||
| +25°C | +17°C | +15°C | ||||
| Rainfall | ||||||
| 45 mm | 15 mm | 10 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 67% | 65% | 63% | ||||
| Air pressure | ||||||
| 1022 HPa | 1024 HPa | 1024 HPa | ||||
| Sunny days | ||||||
| 11 | 13 | 14 | ||||
| Cloudy days | ||||||
| 9 | 10 | 10 | ||||
| Rainy days | ||||||
| 8 | 4 | 2 | ||||
| Snowy days | ||||||
| 1 | 4 | 5 | ||||
December weather is still as good as in November. It’s getting colder in December. From +11°C in the day, the average maximum temperature lowers to +4°C. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 45 mm to 15 mm. It feels drier, as humidity decreases from 67% to 65%. The average wind speed doesn’t change much during December, staying around 2 m/s. The good news is there are likely to be more sunny days in December, from 11 to 13.
January brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 7 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.
Rain
Snow
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?
Climate Change over Years
The climate in Seoul in December has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+15°C) and the highest in 2021 (+18°C). The driest year was 2001 with only 618 mm of rainfall, and the wettest year was 2020 with 1720 mm.
FAQ
Is December a good time to visit Seoul?
Can you sunbathe in Seoul in December?
Is Seoul rainy in December?
Is it sunny in Seoul in December?
Other cities in South Korea
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, 2023.
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.