What to wear to Tons of Rock: Oslo sits at 20°C (68°F) by day and 12°C (54°F) at night in June, on open field, with a moderate chance of rain. That means a light base with one warm layer you can carry, broken-in boots or sturdy trainers, and a bag small enough for the gate rules. The crowd leans metal, rock and punk, so anything that survives the day reads as right.







