Where to sit in warm volcanic water: thermal parks, springs in the forest and the one that runs into the sea.
The water comes out of the ground warm, rich in iron and smelling faintly of sulphur. Most of it is behind a ticket desk, in pools built around the spring with changing rooms and showers; a few places are springs in the open; and at one the hot water runs straight into the Atlantic and is only pleasant near low tide. Temperatures, hours and prices are the operators' own, and a price carries the month it was read.
A large iron-orange thermal tank and two small hot tubs inside the botanical garden at Furnas.
The tank in front of the old park house is fed at about 42 °C where the water comes in and cools towards 36 °C at the far end; the two stone jacuzzis by the changing rooms hold 39 to 40 °C. The ticket covers the whole garden, so the bath comes with a walk through two centuries of planting. By late morning the tank is busy with tour groups, and the park asks you to stay no longer than 30 minutes in the water.
Water temperature
Water 38–42 °C
Opening hours
All year: 10:30–16:30
Price
Adults €17 (checked October 2026)
Worth knowing: Wear a dark swimsuit you do not care about: the iron stains light fabric orange for good, so rinse it before it dries. Take off silver jewellery, and use a locker rather than leaving things on the edge.
Four built hot pools along a stream on the edge of Furnas, open until late evening.
The water sits at around 39 °C in all four pools, set in stone and wood among tree ferns, and it stays open until 23:00, which is when most people want to be there. A ticket buys 90 minutes, and an evening entry from 18:00 costs more than a daytime one. Tickets are sold online only, and the pools are reached by steps.
Water temperature
Water about 39 °C
Opening hours
All year: 08:30–23:00
Price
Adults €12 (checked October 2026)
Worth knowing: Buy the ticket online before you drive out, and go in the morning if you want it quiet. The iron water stains light swimwear and can tint blonde or bleached hair, so wear something dark and a swim cap; leave silver at home.
The oldest bathhouse in the Azores, built in 1811 among the fumaroles of the Caldeiras above Ribeira Grande.
The sulphurous water comes out at around 39 °C and is used for thermal baths and spa treatments in the restored white bathhouse, in a wooded valley where locals also cook cozido in the hot ground. It is much smaller and quieter than the Furnas pools, and it works more like a spa than a public pool. Prices and the conditions for the baths are not published; the house gives them on request.
Water temperature
Water about 39 °C
Opening hours
All year: 10:00–23:00
Price
Price not published
Worth knowing: Write or call before you go to ask what a bath costs and whether there is room that day; the form on the website asks you to choose "Banhos Termais". The cozido holes and the picnic area outside are free to walk around.
Thermal pools in a tree-fern ravine on the slope of the Fogo volcano, run by the Azores nature parks.
The best-known pool sits under an iron-stained waterfall, with three more a short way along the path, all in a ravine of tree ferns that keeps the place damp and green. It is a protected natural monument rather than a spa: entry is by a 90-minute time slot, and only a hundred people are allowed in the pools at once. The full ticket includes the pools; a cheaper one is for the walk and the interpretation centre only.
Opening hours
November – March: 09:00–17:00
April – April: 09:00–18:30
May – September: 09:00–20:30
October – October: 09:00–18:30
Price
Adults €10 (checked October 2026)
Worth knowing: Buy the first slot of the day, or the last in summer, and you share the waterfall pool with far fewer people. Wear dark swimwear, and rent a locker at the entrance rather than leaving bags on the rocks.
A free rock pool at the island's western tip where a hot spring mixes with the Atlantic.
Geothermal water rises through the lava at the foot of the Ferraria cliff into a cove held by ropes, and how warm it is depends on the tide: near low water it is genuinely hot, at high water the sea wins. There is no ticket, no opening time and no attendant outside the summer bathing season, and the way in is by steps and a ladder over sharp rock. The spa building above is a separate business and not part of the pool.
Opening hours
Hours not published
Price
Free entry (checked October 2026)
Worth knowing: Plan around the tide table: an hour either side of low water is the point, and any real swell, common from October to April, makes the cove unsafe. Hold the ropes, and wear water shoes for the rocks.
Hours and prices change with the season and are set by the operators, not by us: check the official site before a long drive. The iron-rich water stains light swimwear for good, and silver jewellery darkens in it.
