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Semolon Hot Spring Sumbawa

Semolon, Sumbawa, Nusa Tenggara, Indonesia
Semolon Hot Spring Sumbawa
Location
Semolon, Sumbawa, Nusa Tenggara, Indonesia
Water type
sulfurous
Temperature
55 °C
pH
6.5

Water profile

Thermicity
Sedative
55 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Bio-active
LowHigh

Rich in active gases or metals — a strong mineral character.

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

SoufreSulfuresSulfates

Sumbawa, the large volcanic island in the province of Nusa Tenggara Barat in central Indonesia, is situated between Lombok and Flores in the Lesser Sunda Islands, its rugged volcanic landscape including the caldera of Mount Tambora — the site of the 1815 eruption that was the most powerful volcanic event in recorded history, killing approximately 70,000 people and causing the 'Year Without a Summer' in 1816 across the Northern Hemisphere. Semolon Hot Spring Sumbawa draws on sodium-rich sulfurous geothermal waters from the active volcanic geology of the Sumbawa volcanic chain, emerging at temperatures around 55 degrees Celsius to create therapeutic outdoor pools set in the wild landscape of the Sumbawa highlands near the Semolon village community. The Mount Tambora caldera and volcanic heritage, the extraordinary surf breaks of the Sumbawa coast attracting international surfing enthusiasts to waves considered among the best in Southeast Asia, and the traditional Samawa and Bima kingdoms whose cultural heritage is preserved in the island's royal palaces and traditional textiles make Sumbawa a dramatically volcanic and culturally rich hot spring destination in the Indonesian archipelago.

Insider tip — Semolon hot spring emerges deep in the forested interior of Sumbawa Island, one of the lesser-visited islands of the Lesser Sunda chain sitting between Lombok and Flores. The sulfurous water at 55 degrees cascades through a sequence of natural rock pools that cool progressively, allowing bathers to choose their preferred temperature. The surrounding dipterocarp forest and the complete absence of commercial infrastructure make this one of the most genuinely wild hot spring experiences in eastern Indonesia.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 55 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sulfurous water.
What is the best season to visit?
The most favourable period for this spot is: Saison sèche.