Seoul or Tokyo in October?
On climate data, Seoul comes out ahead overall in October. See the per-criterion details below.
SeoulPhoto: Basile Morin · CC BY-SA 4.0
TokyoPhoto: Basile Morin · CC BY-SA 4.0Key figures in October
| Criterion | Seoul | Tokyo |
|---|---|---|
| Average daily high | 18 °C | 22 °C |
| Average daily low | 10 °C | 15 °C |
| Rainy days | 7 rainy days (est.) ★ | 14 rainy days (est.) |
| Sun | 4 h/day | 4 h/day |
| Humidity | 76 % | 82 % |
Winner by travel type
Trade-offs
- Tokyo is about 4 °C warmer by day.
- Seoul is drier, with about 7 fewer rainy days.
Seoul or Tokyo in October: the short answer
In October, Seoul comes out ahead on the overall climate score (Seoul 76/100 vs Tokyo 69/100). That is a snapshot of one month, though — which one truly fits depends on what you want from the trip, so the breakdown below goes criterion by criterion.
This comparison focuses on October as a representative month for the pair; for any other month, use each destination's month-by-month pages. Across the whole year Seoul averages a climate score of 63/100, Tokyo 60/100. Both profiles below are historical monthly averages, not a forecast.
Weather in October, side by side
The average daily high is about 18 °C in Seoul and 22 °C in Tokyo — warmer in Tokyo. Average daily lows are around 10 °C versus 15 °C.
On rain, Seoul sees about 7 rainy days in October and Tokyo about 14 — drier in Seoul. Sunshine is comparable (4 vs 4 hours a day).
Rain and sun across the year
Over a full year Seoul records roughly 107 rainy days and Tokyo about 139 — the drier of the two overall is Seoul. At their sunniest, Seoul reaches about 7 hours of sun a day (May) and Tokyo about 7 (August). If dependable dry, sunny weather is your top priority, weigh these annual totals alongside the single month above.
Best time to visit each
Climatically, Seoul is at its best in May, June, September and October, while Tokyo peaks in April, May, June and October. If your dates are fixed, pick the destination whose strong season overlaps them; if you are flexible, plan around these windows.
Which suits which kind of trip
Based on the October scores for each travel style:
City breaks: Seoul scores higher in October (Seoul 88 vs Tokyo 79).
Active & hiking: Seoul scores higher in October (Seoul 85 vs Tokyo 67).
Family: Tokyo scores higher in October (Seoul 60 vs Tokyo 62).
Verdict: which should you pick?
There is no single winner — it depends on your month and your priority. For October specifically, use the head-to-head above; over the year, Seoul carries the slightly higher overall climate score. Choose Seoul if its strong months and profile match your plan, Tokyo if its do. The month-by-month pages for each destination give you the full picture before you book.