What to wear to Isle of Wight Festival: Newport sits at 20°C (68°F) by day and 13°C (55°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 boho, hippie and indie, so anything that survives the day reads as right.
Women's outfits at Isle of Wight Festival have to clear the same three hurdles as everyone else's. 20°C (68°F) by day, 13°C (55°F) at night, open field underfoot, with more options for solving them.
The dominant aesthetics at Isle of Wight Festival are boho, hippie, indie and camp-practical. 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 4 days of open field 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.