Top Natural Pools to Swim Across Spain

One of the brightest joys of summer is finding a cool spot to swim and beat the heat. Beyond beaches and traditional pools, rivers and natural pools attract adventurous swimmers across Spain. The summer scene has grown busier across the country, drawing more locals and visitors to these pristine, natural environments.

Countless places are celebrated for their scenery and the quality of their bathing spots. In the lines below, the best sites to enjoy a sea breeze and a bath in a fully natural setting are reviewed.

Boltaña Pools (Huesca)

The Arag�n Pyrenees hide hidden gems, and Boltaña, near the well-known gateway town of Aínsa, is one such spot. Crossing the Ara River along the mountain road into Boltaña reveals a succession of natural pools where swimming is straightforward and accessible. It’s common to see bathers along the riverbank as the route dips into the town.

Montanejos Baths Fountain (Castellón)

In the Upper Mijares region, this remarkable destination is a turquoise natural pool that seems carved into the rock. The waters are reputed for their medicinal properties thanks to a higher mineral content. Access is restricted and requires advance booking, with a capacity of roughly 1,200 people, and a small ticket fee of three euros.

Nogaledas Strait (Cáceres)

Nestled in the Jerte Valley, Extremadura, this spectacular waterfall features seven cascades. It lies in the second heavenly pond, arguably the best spot to bathe in crystal-clear waters within a tranquil setting.

Valdesotos Stream (Guadalajara)

A natural stone pool of clear waters about three meters deep sits beside the village that shares its name. The area is not a quiet secret due to its proximity to Madrid and the popular hiking routes, but it remains an excellent place to unwind after a countryside day.

Fontcalda (Tarragona)

Hot springs tucked among rocky terrain maintain temperatures around 28°C, with guardrails inviting year-round bathing and easy access during winter. The experience can be extended with a walk along the Green Road, offering a deeper connection with the surrounding nature.

Arenas de San Pedro Natural Pools (Ávila)

In a calm corner of the Arenas River valley, there is ample space for swimming, with clear waters where trout and larger fish are often visible. Its close proximity to Madrid, Ávila, and Toledo makes it a perfect weekend escape.

Las Presillas (Madrid)

A true oasis just under an hour from the capital, located on the Lozoya River in the Sierra de Guadarrama. Surrounded by mountains and meadows, the setting offers relief from heat and city bustle for a few hours of relaxation.

Navafría (Segovia)

Still in the central peninsula, these natural pools lie near the Guadarrama range and are set in a pine forest with a cool vibe. Access is not free; a ticket is required to enjoy the pools, adding a small but worthwhile contribution to upkeep and conservation.

Blue Pool (El Hierro)

In the Canary Islands, these natural pools sit inside sea caves on El Hierro. A short hike from the nearest access leads to strikingly blue waters and a tranquil atmosphere perfect for mindful swimming.

Garachico Pools (Tenerife)

On the island of Tenerife, recent volcanic activity shaped natural lava pools along the coast. The protected shoreline areas have become ideal places for safe, free bathing, with ongoing efforts to preserve the landscape for future visitors.