What to wear to Nuits Sonores: Lyon sits at 20°C (68°F) by day and 10°C (50°F) at night in May, on industrial site, 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 techno, underground and warehouse, so black and functional reads as insider.
| Typical daytime high | 20°C (68°F) |
|---|---|
| Typical night low | 10°C (50°F) |
| Day–night swing | 10°C (18°F) |
| Rain risk | Moderate |
| Ground | Concrete, metal grating and gravel |
| Sun exposure | High, little natural shade |
Everything below follows from those numbers.