Sonnen-Therme

Thyrnau, Bavaria, Germany

Location: Thyrnau, Bavaria, Germany
Water type: thermal
Temperature: 38 °C
pH: 7.3

Water profile

Thermicity

Neutral

38 °C

LowHigh

Soothing — neither hot nor cold, perfect balance.

Mineralisation

Balancing

LowHigh

Rich in trace elements — gentle on the skin.

Buoyancy

Standard buoyancy

LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesCalcium

In Eging am See, a recognised climatic health resort some 30 kilometres from Passau, the Sonnen-Therme sits right on the shore of the Eging lake. Its pool landscape combines a current pool for swimming laps, an outdoor 33°C pool fitted with air jets and massage nozzles, and a granite rock pool with a whirlpool — a nod to the local geology of the Bavarian Forest.

A distinctive feature is its Mediterranean pool, which recreates 3% salinity seawater, alongside an all-granite sauna area with a 95°C sauna, an 85°C Finnish sauna and a 55°C sanarium. In the basement, a relaxation area sits alongside physiotherapy and occupational therapy facilities, a sign of a resort built as much for rest as for gentle rehabilitation.

Insider tip — Sonnen-Therme sits near the confluence of the Inn and Danube rivers in Lower Bavaria, drawing thermal spring water from the foothills where the Alps begin their descent toward the Danube plain. The sun-themed facility offers a broad range of pools and sauna landscapes built around the generous natural light that gives the region its name. Families and wellness seekers from across the Passau area use it as a year-round retreat, and the adjacent riverside walking paths make a pleasant complement to a day of bathing. Water temperature is kept at a comfortable 34–38°C to suit a broad range of guests.

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