Average temperatures, rainfall and packing tips for Seoul, South Korea in January
January in Seoul is typically cold, with average daytime highs around 3°C and nights near -6°C. It is one of the cooler months of Seoul's year.
Rainfall is light in January: roughly 17 mm across the whole month.
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 January, Seoul averages a daytime high of about 3°C and a night-time low of around -6°C, based on recent historical data.
Rainfall is light in January: roughly 17 mm across the whole month.
January 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.