What to wear to Reading Festival: Reading sits at 22°C (72°F) by day and 13°C (55°F) at night in August, on open field, with a high chance of rain. That means a light base with one warm layer you can carry, waterproof boots, and a bag small enough for the gate rules. The crowd leans punk, alt and grunge, so anything that survives the day reads as right.
Women's outfits at Reading Festival have to clear the same three hurdles as everyone else's. 22°C (72°F) by day, 13°C (55°F) at night, open field underfoot, with more options for solving them.
The dominant aesthetics at Reading Festival are punk, alternative, grunge 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 3 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; wellies or waterproof boots on almost everyone by day two; the same jacket every day, because it lives in the tent and does everything; something identifiable, a colour, a hat, a flag, so your group can find you in a crowd of that size.