ReykjanesGeothermal spa
Blue Lagoon
Iceland's most famous geothermal spa. Milky-blue water rich in silica and minerals. Pre-booking required.
Hot Springs
Hot Springs of Iceland: Complete Guide
From luxury geothermal spas to wild highland rivers—Iceland's hot springs are scattered across every region, each with its own character and access considerations.
Updated February 1, 2026By the Iceland.org Travel Team
Safety first
Always test the water
Unmarked springs can be scalding. Never jump into untested geothermal water.
Safety + sourcing
Last updated: 2026-02-01
This guide is for trip planning, not emergency guidance. Geothermal areas can pose burn and gas risks—always follow on-site warnings and stay on marked paths.
Sources to check
South IcelandNatural pool
Secret Lagoon (Gamla Laugin)
Iceland's oldest natural pool in Flúðir. More relaxed atmosphere than Blue Lagoon. Open year-round.
North IcelandGeothermal spa
Mývatn Nature Baths
North Iceland's answer to the Blue Lagoon. Alkaline water with views over Lake Mývatn's volcanic landscape.
South IcelandHot river
Reykjadalur Hot River
A geothermally heated river you bathe in after a 3 km hike. Temperature varies along the stream—find your perfect spot.
South IcelandHistoric pool
Seljavallalaug
Built in 1923, one of Iceland's oldest pools. Nestled in a mountain valley. Free but unmaintained—expect algae.
HighlandsHighland hot spring
Landmannalaugar
Natural hot stream amid colorful rhyolite mountains. Highland F-road access; summer only. Starting point for the Laugavegur trail.
South IcelandNatural pool
Hrunalaug
Tiny historic hot pot on private land near Flúðir. Small donation expected. Very limited space—visit early.
HighlandsCrater lake
Víti Crater at Askja
Warm milky-blue lake inside a volcanic crater. Highland F-road access only. Water can contain harmful bacteria—check conditions.
West IcelandHot spring
Deildartunguhver
Europe's most powerful hot spring at 180 liters/second of near-boiling water. Do NOT touch the water—scalding temperatures.
North IcelandGeothermal spa
GeoSea
Infinity-edge geothermal baths in Húsavík with views over Skjálfandi Bay. Seawater heated by geothermal energy.
West IcelandGeothermal spa
Hvammsvik
Eight seaside hot springs on Hvalfjörður. Tidal pools that mix geothermal water with the ocean. Pre-booking required.
Planning help
Hot springs FAQs
Quick answers with safety notes where it matters.