By the volcano

snorkeler diving towards camera between black sand bubbling hot water out of white rocks up to two snorkelers in Kleifarvatn

Hot Spring Snorkeling Tour

Snorkel in bubbles next door to an erupting volcano

Hot Spring Snorkeling

Where few have been before

Snorkeling in bubbling hot springs is usually impossible as the water is far too hot, but the hot springs at the bottom of Lake Kleifarvatn provide us with the opportunity to do just that. Lake Kleifarvatn is hidden within a stunning volcanic landscape just 30 minutes outside of Reykjavík and only 20 minutes from the active volcano at Geldingadalir in Reykjanes peninsula. Talk about a unique tour!

Standing at the lake shore and changing into your dry suit, you will probably catch a whiff of the sulfur emitted from nearby hot springs and the total silence will let you forget that you are anywhere near civilization.

The underwater hot springs in lake Kleifarvatn have only recently been discovered and are about a 150 meter swim from the shore. Upon entering the lake you can see the white and yellow sulfur deposits on the lake floor. When we swim closer, you’ll begin to sense the environent around you changing as you approach the gas emanating from below the lake’s floor. We’ve heard this sensation described as similar to ‘snorkeling in a glass of Champagne’—the fact that you are snorkeling in a caldera is also impressive enough!

When back on land we will enjoy some refreshments at the shore before moving on to Seltún, a nearby high temperature geothermal area on land. In Seltún we will walk along the boiling mud pots and colorful sulfur deposits.

We highly recommend that you bring your swimsuit with you. Your next stop after this tour could be the nearby Blue Lagoon or at one of Reykjavík’s local geothermal pools where you can relax in the hot tubs and end the day in traditional Icelandic fashion.

Our Souvenirs can be purchased in your booking process by selecting them under "Extras". If the Souvenir you are looking for is not listed below please contact us or leave a comment in your booking and we will bring it on tour with us.

Emily B 04.08.2016
Incredible GEOTHERMAL SNORKELING - the ONLY company in iceland to offer this incredible experience!

What can I say!? Mind blowing geothermal snorkeling at Kleifarvatn. It was the first time I had ever snorkelled and definitely won't be the last, and definitely not the last with

  • I felt like a mermaid swimming amongst the streams of bubbles erupting straight from the centre of the earth, whilst floating above the glittering mineral deposits.
  • Completely tourist free experience. Just the 4 of us and the whole geothermal area to ourselves. Not another human or car in sight! Definitely an off the beaten track tour.
  • Perfect small group experience with an amazing guide - shout out to Jukka, who was incredibly friendly and well informed about the geology of the area and how the geothermal fissures in the lake formed.
  • WARMER WATER THAN SILFRA. And warm soup, fresh bread, hot chocolate and chocolate biscuits after!
  • Post-snorkel visit to the geothermal area Seltun - very similar to Hveravellir near Myvatn, without having to travel to the northeast! Perfect if you are only staying around the Reykjavik area.
    Could not recommend it any more highly!

DIVE.IS is rated No. 1 of all 279 Outdoor Activities

Tour Details

  • 1 May - 30 September

  • Don't see a tour time that works for you? Contact us at and we will find the best time

  • 2 hours

  • Maximum of 8 snorkelers per snorkel guide

  • Minimum 4 snorkelers. We will refund you in full if the minimum is not met

  • Google maps meeting point at Seltún Geothermal Area parking lot

From ISK 18.990


  • Guided snorkeling trip
  • All necessary snorkeling equipment
  • Hot chocolate and cookies at the lake's shore
  • Vegan hot chocolate and cookies available, if you are vegan let us know at
  • Stop at geothermal area Seltún

Please bring

  • Long underwear
  • Thick socks
  • Suitable clothes for the weather of the day
  • Contact lenses if you wear glasses
  • A COVID19 face mask

Covid-19 safety precautions

  • We are a certified partner of the Clean and Safe initiative
  • Only 8 passengers with a guide
  • Plenty of space at Kleifarvatn to uphold the 2 meter rule
  • Mandatory mask use on our transfer bus and within 2m at Kleifarvatn (if needed)
  • Customers bring their own COVID19 face mask
  • Hand sanitizer and disposable gloves are provided in our bus and at Kleifarvatn
  • All equipment and vehicles are thoroughly sanitized after every tour

Safety requirements

Participants must:
  • have read, signed, and followed directions on the online Snorkeling Medical Statement (link provided in confirmation email) PDF

  • have our Snorkeling Medical form signed off by a doctor if they are age 60 or older PDF

  • sign our liability release form at the start of the snorkeling tour PDF

  • be at minimum 150cm / maximum 200cm

  • be at minimum 45kg / maximum 120kg

  • fit within our dry suit size chart PDF

  • be at least 12 years of age on the year and at least 45 kg / 99 lbs

  • be comfortable in water and be able to swim

  • be physically fit

  • be ready to wear a sometimes tight & constricting dry suit

  • be able to communicate in English

  • not be pregnant

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Your bookable extras

Experience the tour

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Guides on this tour

You might be guided by one of these nice guys

You'll snorkel here

Kleifarvatn lake

Reykjanes Peninsula

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Frequently asked questions about our Geothermal Snorkel Tour

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