Soaking in a geothermally heated pool while cold air bites at your face is one of the great Icelandic experiences. Iceland sits on the Mid-Atlantic Ridge, where tectonic plates pull apart and volcanic heat rises close to the surface — which means naturally hot water is essentially everywhere. Icelanders have been bathing in it for centuries, and the tradition of the communal hot pool is as central to Icelandic culture as the pub is to British culture.
The question is not whether to visit a hot spring — it is which one. Here is an honest guide to everything from the famous tourist lagoons to the wild natural pools that most visitors never find.
At every public pool and lagoon in Iceland, you are required to shower without a swimsuit before entering the water. This is taken seriously — staff will turn you away if you skip it. It is not optional and it is not a suggestion. Just do it, it takes two minutes, and everyone will respect you for it.
The Famous Lagoons
The Blue Lagoon is Iceland's most famous attraction and one of the most visited tourist sites in all of Europe. The milky, blue-white water is geothermal seawater rich in silica and minerals, and the setting — surrounded by black lava fields near Reykjanes — is genuinely striking. You can apply silica mud masks, drink at the swim-up bar, and watch steam rise against the sky.
Is it worth it? That depends on what you want. The Blue Lagoon is an extremely well-run, beautiful experience. It is also extremely expensive, must be booked weeks in advance, and is crowded with tourists. Icelanders almost never go there themselves. If you want a quintessential Iceland moment, it delivers. If you want to experience how Icelanders actually bathe, look elsewhere.
Sky Lagoon opened in 2021 and has quickly become a serious rival to the Blue Lagoon. Located just 10 minutes from central Reykjavík, it is set on a dramatic clifftop above the ocean, with an infinity edge that looks out to sea. The water is geothermal, the design is stunning, and the seven-step ritual — moving between hot pool, cold plunge, sauna, steam room, and scrub — makes it feel more like a genuine spa experience.
Sky Lagoon feels less crowded than the Blue Lagoon, is easier to get to, and the ocean view is arguably more dramatic. It is still very much a tourist experience, but it is a very good one. If you are choosing between the two, Sky Lagoon is generally the better value and better location for most visitors.
Blue Lagoon vs Sky Lagoon — which should you choose?
| Blue Lagoon | Sky Lagoon | |
|---|---|---|
| Location | Reykjanes, near airport | 10 min from Reykjavík |
| Setting | Black lava fields | Clifftop ocean view |
| Water | Milky blue silica water | Clear geothermal water |
| Crowds | Very busy | Busy but more manageable |
| Price | Higher | Slightly lower |
| Best for | Iconic bucket-list experience | Better value, great views |
Where Icelanders Actually Bathe
Every town in Iceland, no matter how small, has a public swimming pool — a sundlaug. These are not tourist attractions. They are community spaces where locals go multiple times a week to swim, soak in the hot pots, and talk. The hot pots (heitir pottar) are usually outdoor tubs kept at around 38–44°C, and they are where the real Iceland happens. Sitting in a hot pot next to locals is one of the best travel experiences the country has to offer — and it costs almost nothing.
The largest public pool in Iceland, and the one most Reykjavík residents use. It has a 50-metre outdoor pool, several hot pots at different temperatures, a steam room, and a waterslide. It is exactly what a Icelandic public pool looks and feels like — unpretentious, affordable, and full of locals. Go on a weekday evening and you will be soaking alongside Reykjavík residents of all ages.
Hofsós is a tiny village in north Iceland with a population of around 200 people — and one of the most beautiful swimming pools in the world. The pool sits on a cliff above Skagafjörður and the infinity edge looks directly out across the fjord to the mountains beyond. On a clear day it is jaw-dropping. On a misty day it is ethereal. It is far from Reykjavík but if you are travelling the north, do not miss it.
On the Golden Circle route, Laugarvatn Fontana sits directly on a geothermally active lakeshore. You can bathe in pools fed by natural springs while steam rises from the ground around you, and then plunge into the cold lake — a contrast that is completely addictive. They also bake geothermal rye bread underground here, which you can try fresh. A great stop on the Golden Circle that most tour buses skip.
Wild Natural Hot Pots
Iceland has dozens of natural hot springs scattered across the landscape — geothermally heated rivers and pools that require no facilities, no booking, and sometimes no other people at all. These are the ones worth hunting down.
A 3 km hike south of Hveragerði leads to a geothermally heated river where you can bathe in the open air. The water temperature varies — hotter as you go upstream — and there are wooden changing screens along the bank. No facilities beyond that. It is free, beautiful, and the hike through the steaming valley to get there is half the experience. One of the most accessible wild hot spring experiences in Iceland.
Deep in the highlands, Landmannalaugar is where a hot spring meets a cold stream to create a perfectly tempered natural pool surrounded by extraordinary rhyolite mountains in shades of red, orange, and green. It is remote — only accessible by 4WD or highland bus in summer — but it is one of the most spectacular natural bathing spots on earth. The starting point for the famous Laugavegur hiking trail.
Natural hot springs are not temperature-controlled. Some are dangerously hot — hot enough to cause serious burns. Always test the water with your hand before getting in, and never enter a spring near an active geothermal area without checking that it is safe. If in doubt, do not get in.
Hot Pool Etiquette
Icelanders take their pool etiquette seriously. A few things to know before you go:
- Always shower without a swimsuit before entering — this is non-negotiable
- Keep noise levels reasonable — hot pots are for conversation, not parties
- Do not hog the hot pot — if it is busy, be aware of others waiting
- No phones or cameras inside the changing rooms — ever
- Rinsing off before re-entering after a break is expected
The Bottom Line
The Blue Lagoon and Sky Lagoon are genuine experiences worth having if your budget allows. But the real soul of Icelandic bathing culture is in the local swimming pools and wild natural hot pots — affordable, unpretentious, and deeply Icelandic. If you only have time for one hot spring experience, make it a local sundlaug on a cold evening. Slide into the hot pot, look up at the sky, and understand why Icelanders do this several times a week. It makes complete sense.