What to wear to Ultra Korea: Seoul sits at 28°C (82°F) by day and 19°C (66°F) at night in June, on arena grounds, 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, k-pop and neon, so anything that survives the day reads as right.
| Typical daytime high | 28°C (82°F) |
|---|---|
| Typical night low | 19°C (66°F) |
| Day–night swing | 9°C (16°F) |
| Rain risk | Moderate |
| Ground | Concrete and gravel |
| Sun exposure | High, little natural shade |
Everything below follows from those numbers.