🇧🇪 Boom, Belgium
Is It Cold at Night at Tomorrowland?
Overnight lows average 15°C across the main days, based on roughly 15 years of records at the site.
The short answer
Not really — Tomorrowland nights stay mild, averaging 15°C, with the coolest festival night near 15°C (Sat 18 Jul). A light layer is usually enough after dark.
A 2-season bag with a comfort rating around 8°C covers these nights comfortably.
Night by night
| Night of | Low | High that day | Rain |
|---|---|---|---|
| Fri 17 Jul | 15°C | 24°C | 1.3 mm |
| Sat 18 Jul | 15°C | 25°C | 0.5 mm |
| Sun 19 Jul | 15°C | 26°C | 2.1 mm |
| Fri 24 Jul | 15°C | 24°C | 3.7 mm |
| Sat 25 Jul | 16°C | 24°C | 2.2 mm |
| Sun 26 Jul | 16°C | 24°C | 2.3 mm |
Long-run averages, not a forecast. Individual years swing several degrees either side.
Sleeping warm in a tent
- Insulate underneath first. A cheap foam mat under an air mattress does more than a warmer bag.
- Dry clothes to sleep in. Damp festival clothes will keep you cold all night.
- A beanie and dedicated sleep socks — the cheapest comfort upgrade in the bag.
- Eat something before bed and don't go to sleep dehydrated; both make you feel the cold more.
Why nights matter to the weather score
Our festival weather score treats overnight lows separately from daytime highs, because a warm afternoon doesn't make up for a night you can't sleep through. Nights between roughly 10 and 24°C count as comfortable camping weather; below that the score starts to drop, and it drops sharply once lows fall under about 8°C.