What to wear to Tomorrowland Winter: Alpe d’Huez sits at 3°C (37°F) by day and -6°C (21°F) at night in March, on snow, with a moderate chance of rain. That means thermal layers under a statement outer layer, insulated waterproof snow boots, and a bag small enough for the gate rules. The crowd leans snow, apres-ski and rave, so a full costume is the norm rather than the exception.
| Typical daytime high | 3°C (37°F) |
|---|---|
| Typical night low | -6°C (21°F) |
| Day–night swing | 9°C (16°F) |
| Rain risk | Moderate |
| Ground | Snow and ice |
| Sun exposure | High during the day, no shade at the main stages |
Below freezing, the outfit is a system: base layer, insulating mid-layer, windproof shell. Style happens in the outer layer and the accessories. Everything else is thermal engineering.
Everything below follows from those numbers.