SEOUL · LATE OCTOBER
Seoul weather in late October
Late October can feel mild in afternoon sun but distinctly cool in the morning and after dark. One removable outer layer is usually more useful than packing only for the daytime high.Quick answer: coat or light jacket?
A light jacket, cardigan or wind-resistant layer is the practical starting point. Add a warmer mid-layer if you get cold easily or plan long evening walks. Check the near-term forecast before choosing between a thin jacket and a heavier coat.
Prepare for the day-night gap
Late-October travellers often spend warm afternoons outdoors and return after temperatures fall. Wear layers that fit in a small bag and choose shoes suitable for long walks rather than building the outfit around one temperature number.
Autumn colour and crowds
Late October may overlap with autumn foliage interest in and around Seoul, but colour timing changes with weather. Weekend parks and mountain routes can be busier, so treat foliage as a possible highlight and confirm current park conditions separately.