Casa Única local guide

Natural thermal waters of Laguna de Apoyo

About 100 metres south of the public beach, warm water emerges naturally along the shoreline of Laguna de Apoyo. At its source, the thermal water can reach around 60°C before trickling toward the lake and mixing with the cooler Laguna water. The result is a naturally warm place to swim, soak your feet and experience one of the most tangible reminders that you are inside an old volcanic crater.

Distance
About 100 m south of the public beach
Source
Around 60°C
Experience
Warm mixed water for swimming and soaking
Access
Shoreline walk or short path
Footwear
Flip-flops are usually sufficient
Best light
Sunrise or sunset
Terrain
One small ditch to descend and climb

Thermal springs map and access

Use the map to locate the public beach and the thermal springs about 100 metres to the south. The public beach is the simplest starting point from Casa Única.

1
Casa Única

Casa Única

Our small-scale South-side stay for guests who enjoy cooking, kayaking, walking and settling into the quieter rhythm of the Laguna.

Open in Google Maps
Start

A short walk south from the beach

From Casa Única, walk through the lower gate to the public beach and continue approximately 100 metres south. Depending on the lake level and shoreline conditions, you can either follow the shore itself or use the short path just inland.

The walk is easy overall. There is one small ditch where you briefly step down and climb back up, but no long or technical section is involved.

Open in Google Maps
Walk through the lower gate to the public beach.
Start
Public beach of San Juan de Oriente.
Distance
Thermal springs are about 100 m south.
Approach
Follow the shoreline or the short path just inland.
Terrain
One small ditch to step down and climb back up.
Footwear
Flip-flops are usually sufficient.
Arrival

Follow the change in temperature

The thermal water does not arrive as a developed spa or constructed pool. It emerges naturally near the shoreline and trickles toward the Laguna.

At times, a few rocks around the outlet form a small natural basin where the hot spring water and lake water mix. You can feel the temperature changing as you move through the water, from the hotter area close to the source to the much larger volume of warm Laguna water around it.

Open in Google Maps
Thermal springs
Natural hot-water outlet at the Laguna shore.
Source
Around 60°C before mixing with lake water.
Water
Hot near the source, comfortably warm as it mixes.
Setting
Natural shoreline; no constructed spa or pool.
Safety
Test the temperature before moving close to the outlet.
Bathing
Sit, soak or swim where the mixed water feels comfortable.

Heat from beneath the old volcano

Laguna de Apoyo occupies the crater of an ancient volcano, and geothermal heat is still present below the surface. Groundwater moves through porous volcanic formations and mineral-rich layers underground, where it is heated before finding its way back toward the Laguna.

The thermal water reaching the shoreline is sulfur-rich and emerges at temperatures of around 60°C. As it flows into the lake, it rapidly mixes with the surrounding water and becomes pleasantly warm.

Find your own temperature

One of the nicest things about the springs is that there is no single bathing temperature. Close to the source the water can be very hot, while only a short distance away it mixes with the Laguna and becomes comfortably warm.

You can warm your feet near the shoreline, sit or swim where the waters mix, or simply move farther into the Laguna until you find the temperature that feels best.

Hot at the source, gentle once mixed

The water emerging directly from the thermal source can be around 60°C, so avoid putting your hands or feet directly into the hottest outlet without first testing the temperature.

Move gradually through the mixed water instead. Rocks close to the shoreline can also be wet or uneven, so take your time when entering and leaving the water.

Come when the sky changes

The springs are enjoyable at any time of day, but sunrise and sunset can be especially beautiful. Around 5:30–6:00 a.m. and 5:30–6:00 p.m., the warm water, changing sky and crater walls can make this one of the quieter and more memorable places along the shore.

Conditions and daylight change through the year, so treat those times as a general guide rather than a fixed schedule.