About Blue Lagoon
Milky-blue geothermal water set in a black lava field, about 45 minutes from Reykjavík. The silica-rich water is famously kind to skin — and famously harsh on hair, so coat yours in conditioner before you get in.
Pre-booking is essential and time slots sell out. Go first thing in the morning or late in the evening for thinner crowds and softer light over the lava.
- Good to know: children 13 and under enter free; the lagoon is fully wheelchair accessible.
- Don’t miss: the free silica mud mask at the mask bar in the lagoon.
Highlights
Naturally heated water at 37–40°C.
Full-service resort with pools, saunas and treatments.
Fun and relaxing for all ages.
Paid – pre-booking required
What to expect
A variety of pools with naturally warm water, plus spa facilities.
Modern saunas and quiet rest areas for a complete wellness day.
Massages, therapeutic programs and spa services for your well-being.
Combine your visit with the surrounding town and countryside.
Getting there
The Blue Lagoon sits on the Reykjanes peninsula at Grindavik - about 20 minutes from Keflavik airport and 45 minutes from Reykjavik. It is an easy stop between the airport and the capital, and most visitors pair it with arrival or departure day. Book the FlyBus or a rental car; there is no public city bus.
Who it suits
Everyone, honestly - couples, families, solo travellers and wellness seekers. The water is shallow, the bottom is smooth, and staff are everywhere. It is fully wheelchair accessible, and children enter free with a paying adult (age rules apply, check when booking).
Safety & etiquette
The lagoon averages 37-40C - comfortable for long soaks, but get out if you feel lightheaded. Shower without swimwear before entering (mandatory in Iceland). Coat your hair in the free conditioner provided: silica-rich water turns hair to straw. Do not wear silver jewellery - the minerals tarnish it.
Frequently asked questions
Do I need to book the Blue Lagoon in advance?
Yes - pre-booking is essential. Time slots sell out days or even weeks ahead in summer. Walk-ins are effectively not possible. Book the earliest or latest slot of the day for the thinnest crowds.
How warm is the Blue Lagoon water?
The lagoon averages 37-40C (99-104F), with warmer and cooler pockets. It is comfortable for long soaks year-round, even when snow is falling.
Can children visit the Blue Lagoon?
Yes. Children enter free with a paying adult (age limits apply - verify at booking). The water is shallow throughout and armbands are provided free for small children.
What should I bring to the Blue Lagoon?
Just swimwear - towels, robes, lockers and silica mud masks are included or available. Bring the free conditioner into the water for your hair, and leave valuables in the electronic lockers.
Is the Blue Lagoon a natural hot spring?
It is geothermal seawater from the nearby Svartsengi area, rich in silica and algae. The setting is man-enhanced, but the water and its skin-friendly reputation are the real deal.
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