Garner State Park Frio River Swimming Hole

The Frio River runs gin-clear over limestone bedrock through the heart of Garner State Park, creating natural swimming holes that stay refreshingly cold even in August. The main pool sits just below the park store, with cypress trees providing afternoon shade and smooth rock slabs for lounging. Water stays around 70 degrees year-round thanks to spring flow from upstream. Tubing is popular but swimming holes upstream offer more solitude.

Day-use fee required even if you’re camping elsewhere — this is Texas Hill Country’s most famous swimming spot so expect crowds on summer weekends. Early morning or late afternoon offer the best experience. The river can flash flood during heavy rains, turning from clear to muddy brown in hours. Check water levels before making the drive if storms have passed through recently.

Hill Country's premier spring-fed swimming hole