Average temperatures, rainfall and packing tips for Seoul, South Korea in December
December in Seoul is typically cold, with average daytime highs around 3°C and nights near -4°C. It is usually the coldest month of the year in Seoul.
December is essentially dry in Seoul - rainfall is negligible on average and it is typically the driest month of the year.
If your dates are flexible, the most comfortable months in Seoul are usually April, May, June, July, September and October.
← Seoul weather tomorrow (live)
In December, Seoul averages a daytime high of about 3°C and a night-time low of around -4°C, based on recent historical data. That makes it the coldest month of the year there.
December is essentially dry in Seoul - rainfall is negligible on average and it is typically the driest month of the year.
December is cold in Seoul. City sightseeing works fine if you dress for it, but pack properly and expect short days. If your dates are flexible, the most comfortable months in Seoul are usually April, May, June, July, September and October.