What to wear to Ruisrock: Turku sits at 22°C (72°F) by day and 13°C (55°F) at night in July, on island, 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 indie, y2k and camping, so anything that survives the day reads as right.
Men's festival dressing at Ruisrock comes down to three decisions: how much you can take off when it hits 22°C (72°F), what you put back on at 13°C (55°F), and whether your shoes can take island for 3 days.
The dominant aesthetics at Ruisrock are indie, Y2K revival, camp-practical and streetwear. That is the visual language of the site, the stages, the merch, the crowd photos, and outfits that speak it look intentional rather than borrowed.
There is no enforced dress code. What the crowd rewards is a look that survives 3 days of island without you having to protect it.
What people actually wear: one good layer over a light base, because the temperature halves after sunset; the same jacket every day, because it lives in the tent and does everything.