The best swimming holes in texas are in and around austin ! · looking for a new favorite swimming hole to take a dip and escape the hot sun? Within zilker parks 358 acres lies one of the crown jewels of austin : Whether you’re new to atx , visiting, or a longtime resident, here are some fun places to visit on your next free summer day. Barton springs pool is a recreational outdoor swimming pool in austin , texas , that is filled entirely by natural springs connected to the edwards aquifer. Youll find hot springs along hiking routes and spring -fed pools you dont want to miss. Check out these 6 swimming holes in austin , tx ! Fed by underground springs , the water stays a cool 68-70 degrees year-round. Unlike traditional hot springs, the water here doesn’t heat up significantly, but its consistency makes it enjoyable in every season. The pool itself measures three acres in size, and is fed from underground springs with an average temperature of 68-70 degrees, ideal for year-round swimming. · this natural pool , located in the heart of austin , offers a refreshing escape from the texas heat. · one of the best parts about these swimming holes is that lots of them are spring -fed, so they stay ice-cold all summer long. · spanning several acres, this spring -fed pool maintains a refreshing 68°f (20°c) throughout the year, making it one of the best places in austin to take a dip. Located in zilker park, the pool exists within the channel of barton creek and uses water from main barton spring , the fourth-largest spring in texas. Barton springs pool. Here are 15 of the best swimming holes in austin for you to explore!