Goa hosts 1 festival in this guide: Sunburn Festival.
Goa has 1 festival in this guide. They run in December, and festival-day temperatures range from 32°C (90°F) to 32°C (90°F), with nights down to 21°C (70°F). That range is the reason there is no single "Goa festival outfit". The answer changes by month and by site.
Every one of them runs in real heat (28°C or more), where loose natural fabrics beat coverage and a brimmed hat does more than any garment.
The ground matters as much as the sky. Every festival here is on beach, which puts flat sandals you can rinse, plus trainers for the night stages at the top of the list for most of these events. 1 of the 1 has camping on site, so outfits have to survive living in a bag on the ground for several days.
Stylistically the crowd here leans beach, rave, psy and tropical. Sunburn Festival is the largest of them at around 100,000 people, and it sets the tone the smaller ones react to. None of that is a dress code. It is what you will see, which is worth knowing if you would rather blend in or deliberately not.
