Caldeira Seca
Furnas, São Miguel, Açores, Portugal
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- Location
- Furnas, São Miguel, Açores, Portugal
- Water type
- iron-rich
- Temperature
- 38 °C
- pH
- 6.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
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Caldeira Seca is located in Furnas, on the island of São Miguel in the Azores, Portugal, a volcanic region known for its hot springs. The water here is iron-rich and reaches 38 °C. The site offers indoor pools, massage and a sauna.
Insider tip — Furnas on São Miguel island in the Azores is one of the Atlantic world's most extraordinary volcanic landscapes — a caldera valley of steaming fumaroles, mud pots, and iron-rich mineral springs where locals cook the traditional cozido das Furnas (a rich stew) underground in the earth's natural geothermal heat. Caldeira Seca (Dry Cauldron) is one of the iron-mineral features of this volcanic valley where the springs that emerge from ancient caldeira geology have been used for bathing and healing for centuries.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.