Island Waterpark

About

Island Waterpark is Fresno's big outdoor water park at 6099 W Barstow Ave, open roughly late May through September. The lineup includes a wave pool, a lazy river, racing slides, and named attractions like Barrier Reef, Singapore Tsunami, and Ohana Bay. General admission runs about $40 in 2026, with discounts through Groupon and Costco. Hours shift week to week across the season, so check the park calendar before you drive out.