Splash House takes place in Palm Springs, California, United States, usually in June, US summer. It is a small, 12,000-capacity festival where the crowd notices what you wear, running 3 days across city streets with no camping on site.
Three hotel pools, 39°C, and a dress code that is essentially swimwear plus jewellery. The only festival where a cover-up is the outfit.
Plan around heat first: daytime highs sit near 39°C (102°F), which rules out anything heavy, tight or synthetic in the middle of the day. Rain is unlikely, which is the one thing you can plan around.
Below: the 10 outfits that work best at Splash House, what the crowd actually wears, and the practical rules, bag size, footwear, night layers. That decide whether the outfit survives the weekend.