The Atotonilco hot springs are a natural thermal site located in the municipality of Santiago Jamiltepec, in the state of Oaxaca, on Mexique's Pacific coast. About two hours' drive from Puerto Escondido, these sulfurous basins attract travelers and locals alike for their hot mineral waters that spring forth at the foot of a hillside.

Why Visit Atotonilco Hot Springs

The site stands apart from most attractions along Oaxaca's coast, which are dominated by beaches and lagoons. Here, the appeal is geological: naturally heated, sulfur-rich water rises to the surface, exploited locally for generations for its reputed soothing properties for skin and joints.

The experience remains rustic. No spa-style amenities, no major tourist infrastructure: a small basin collects water flowing from the rocks, and the setting retains the character of the dry countryside typical of southwestern Oaxaca. It's a brief stop, best combined with a beach stay or exploration of the coastal region.

What to See and Do

The springs lie about 3 km northeast of Santiago Jamiltepec's town center, at the foot of a hillside and near the local watercourse. Upon arrival, the characteristic sulfur smell signals the presence of thermal springs: hot water springs directly from the rocks before being channeled into a small constructed basin.

The Basin and Vapors

The mineral water feeding the basin is very hot. Full immersion is not recommended due to the high temperature. The common practice is to remain at the edge, dipping your feet or hands, and enjoying the vapors rising from the spring sources.

The Natural Setting

The site is modest but authentic. The hillside, dry vegetation, and absence of major development create an atmosphere of rural discovery. Visits are most often made with a local guide or local residents, who know the access trails.

Practical Information

• Site type: sulfurous thermal springs in a natural setting
• Visit duration: allow 1 to 2 hours on-site
• Admission: modest entry fee, payable in pesos on-site
• Facilities: no services; bring water, snacks, and a towel
• Precautions: very hot water, do not fully immerse; exercise caution with children
• What to bring: closed-toe shoes for access, hat, sunscreen

When to Go

Oaxaca's coast experiences two distinct seasons. The dry season, from November to April, offers the best conditions: clear skies, passable trails, and comfortable temperatures. It's the most comfortable period to reach the site, with final access on foot or horseback along trails that can become muddy after rains.

The rainy season, from May to October, makes access more challenging, with intense afternoon showers possible. If traveling during this period, plan your visit for the morning.

How to Get There

Puerto Escondido is the logical starting point, about 2 hours' drive to the northwest via Federal Highway 200, then branching toward Santiago Jamiltepec. From Pinotepa Nacional, the journey is shorter.

Once in Santiago Jamiltepec, the final 3 kilometers to the springs are covered on foot or horseback, the equestrian option being offered by village residents. A local guide is recommended, as signage is nonexistent.

Combine With

The region offers several complementary sites accessible from the coast or from Oaxaca de Juárez:

• The Manialtepec Lagoon, near Puerto Escondido, known for its mangrove ecosystem and bioluminescence phenomenon.
• The state capital with its street art scene in Oaxaca, testament to a vibrant urban landscape.
• The archaeological site of Monte Albán, the former Zapotec capital inscribed as a UNESCO World Heritage Site.

Frequently Asked Questions

Plan Your Trip

Atotonilco hot springs fit well into an itinerary combining the Pacific coast and the Oaxacan hinterland. To build a tailor-made journey, explore our Mexique travel suggestions.