What to wear to Ultra Japan: Tokyo sits at 28°C (82°F) by day and 21°C (70°F) at night in September, on city streets, with a moderate chance of rain. That means a light base with one warm layer you can carry, cushioned trainers or a low boot, and a bag small enough for the gate rules. The crowd leans rave, kawaii and neon, so anything that survives the day reads as right.
Men's festival dressing at Ultra Japan comes down to three decisions: how much you can take off when it hits 28°C (82°F), what you put back on at 21°C (70°F), and whether your shoes can take city streets for 2 days.
The dominant aesthetics at Ultra Japan are rave wear, kawaii, neon and EDM festival wear. That is the visual language of the site, the stages, the merch, the crowd photos, and outfits that speak it look intentional rather than borrowed.
There is no enforced dress code. What the crowd rewards is a look that survives 2 days of city streets without you having to protect it.
What people actually wear: one good layer over a light base, because the temperature halves after sunset; something identifiable, a colour, a hat, a flag, so your group can find you in a crowd of that size.
