Tokyo edges it in October. Seoul averages 9–19°C with high crowds; Tokyo 15–22°C with moderate crowds.
By Daan · Last reviewed October 2026
Seoul and Tokyo
The verdict for October
Seoul at its sweet spot
+Excellent weather and autumn colors
–Higher demand than winter and early spring
October brings mild temperatures, low humidity and excellent conditions for exploring the city, with autumn colors developing as the month progresses.
The best month of the year
+Dry, clear, mild days with comfortable evenings and manageable crowds.
–Autumn demand means the best hotels book out early.
Perfect walking weather, early autumn colour and the whole city functioning normally.
Scores and crowd levels are my own judgement; temperatures are monthly averages. Higher scores are better: quieter, cheaper and more pleasant.
Another month