What should you wear to a sumo tournament?
Anything casual is fine; there is no dress code and most of the crowd is in everyday clothes. The real question is your seat. A floor box (masu-seki) means taking your shoes off and sitting on a flat cushion for several hours, so wear clean socks and trousers or a skirt you can sit cross-legged or kneel in. Upper-level chair seats have no such constraint.
Tokyo's September tournament falls in a warm, humid, and sometimes rainy stretch; the 2026 dates are 13-27 September at Ryogoku Kokugikan. Conditions in the other tournament cities and months differ. Japan Sumo Association ↗
What you are seeing
- In box seats, people sit on thin cushions on the floor; there is no back support and little legroom.
- The hall warms up noticeably once it fills in the late afternoon, even with air conditioning.
- Large bags and suitcases are not allowed at the seats and go to the basement lockers or cloakroom.
What to watch next
- Wear slip-on or easy shoes: you remove them for a box seat, and there is a lot of walking around Ryogoku before and after.
- Bring a light layer you can take off rather than a heavy coat you have to store.
- Travel to the arena with only a small bag; anything bigger than day-pack size will have to be checked.
- In September, keep a compact umbrella in that bag for the walk from the station.
A common first-timer mistake
Wearing tight jeans and heavy boots to a floor box, then spending hours unable to sit comfortably or get your shoes back on quickly.
Words you may hear
- Masu-seki
- a floor box seat, shoes off, shared as a unit
- Isu-seki
- an upper-level chair seat
- Tamari-seki
- ringside cushions; no photos or food during bouts, 16 and over only
Sources and review
Created and photographed in Ryogoku by a Tokyo-based spectator. Facts reviewed against Japan Sumo Association materials on 25 August 2026.