Explore the volcanic and geothermal activity that has shaped Iceland. This perfect activity day tour offers snorkeling in Lake Kleifarvatn, with its geothermal activity and the amazing landscape of Reykjanes peninsula. You’ll witness something you rarely see during a regular snorkeling tour in the tropics: active underwater hot springs! You don’t have to be experienced snorkeler to enjoy this unique experience.  Our experienced and certified guides will lead you and take pictures of the snorkeling trip.

Is this tour right for you?

Travel Style: Guided small groups

Small group experience, maximum of 6 snorkelers per guide

Availability: April – September

This tour is available between Apr 1st – September 30th.

Activity level: Easy

This tour includes light walking or other activities.

Duration: 4 hours

Depending on road and weather conditions

Pickup: Optional

Pickup service from Reykjavík or meeting at Seltún Geothermal Area parking lot

Age requirement: 14 yrs

be at least 14 years of age on the year

Why you’ll love this tour

  • You will spend a day visiting an active volcanic area on the Reykjanes peninsula and enjoying the stunning volcanic landscape at first hand.
  • Snorkeling in the bubbling geothermal lake is like snorkeling in a glass of champagne, it is great to see the activity under water.
  • You’ll see majestic underwater hot springs surrounded by colorful sulfide deposits.
  • After snorkeling, you will have a delicious Icelandic meal at the lake’s shore.
  • The short hike at the colorful Seltún Geothermal area will blow your mind.
  • You will see countless mud pots and fumaroles, and minerals deposited from geothermal solutions providing colorful sediments.
  • This day tour offers an optional shuttle service from Reykjavík.
  • Many of our guests have told us that this unique day tour is one of the most special experiences of their entire Iceland vacation.


  • Geothermal snorkeling experience

  • Lake Kleifarvatn

  • Icelandic snacks and refreshments

* Sights can vary according to the passengers’ fitness and the conditions.

  • Seltún Geothermal Area

  • A short hike at the hot spring area


You can expand this itinerary by clicking on the titles.

Pickup in Reykjavík or meeting at Seltún parking lot

We will start our day at your selected location. You can drive yourself and meet your guide at Seltún Geothermal Area car parking lot, but it’s also possible to be picked up in Reykjavík.

Discovering the underwater world of Lake Kleifarvatn

The location of Lake Kleifarvatn is just a short drive from  Reykjavík (30 min drive), but it feels like you are in the middle of nowhere. Your guide will drive around the lake to found a nice spot on the beach. Because of the cold water, you will wear warm drysuit for snorkeling. Our guides will help you to gear up properly and they will give you training on how to use the gear properly and what will happen during the tour. They will give you a lot of interesting and detailed information about Kleifarvatn and the area.

In the water, your guide will constantly be swimming around you silently, taking some photos and make sure that you feel safe and enjoy the tour.

The visibility will be great and as soon as you swim 10-20 meters off the shore, you will see the amazing underwater world with many bubbling hot springs surrounded by colorful sulfide deposits. However, the lake could seem smooth and still, everything will be streaming under the water. 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!

Exploring Seltún Geothermal Area

After the snorkeling, we will enjoy some hot chocolate, cookies, and traditional Icelandic snacks before moving on to Seltún geothermal area. Seltún is a fascinating hot spring field, recognizable by the boiling mud pools and steaming ground. Through the steam, you’ll see yellow, red and green colors, as well as the blue and white colors of the sulfite deposits. The sulfates dissolve in water and when it rains they disappear altogether, leaving the bright colors of the sulfur.

Driving back to Reykjavík

What’s Included

Activities and gear

✔️ Guided small group sightseeing and snorkeling tour
✔️ All necessary snorkeling equipment


❌ Transportation can be added for an additional fee of 5000,-ISK per person

Staff & experts

✔️ English speaking local expert guides and drivers


✔️ Hot chocolate, cookies, and some real Icelandic snacks at the lake’s shore

Photo gallery

Important notes

The following is important information applicable to this tour. If you have any questions please don’t hesitate to contact us by email or phone, we are here to make your tour exceptional!


This tour is operated by our trusted partner. We have carefully selected our trusted partners.

Pick up:

Please note that Activity Iceland offers pick-up service from authorized pickup points in Reykjavik downtown area. We can unfortunately not offer pick-up service from Airbnb or private apartments, nor Keflavik Airport for our tours. If your pick-up location is not on our pick up list in the booking form then we kindly ask you to locate the closest pick-up point to your accommodation. It might take up to 30 min for our guides to reach your pick-up point, so please wait patiently for us to arrive. As much as possible be prepared and ready to go.


Our day tours are very popular and we have many days when all available seats are booked out. Please book your tour early to avoid disappointment. You can book this tour online using the booking form or just call our office. We typically respond to phone calls from 8:00 AM to 17:00 PM GMT – if you do not reach us, please send an email and we will reply your message as soon as possible.


All prices are per person. We accept payment by major credit and debit cards with no additional fees. Gratuities are not included.

Tour itinerary changes:

At all times your safety is our first priority. You can expect any kind of weather in Iceland. For this reason, the tour itinerary may be subject to change the sights without notice or the tour might be canceled due to weather, or other unforeseen circumstances. If the timing changes, we will need your valid mobile phone number to contact you and inform you of the time change. Please don’t forget to fill out your phone number on the booking form. If the tour is canceled, you can choose to receive a full refund or to reschedule your tour for another day. We make every effort to avoid any such changes wherever possible.

What to bring:

Since the weather is unpredictable, always bring comfortable outdoor clothes. Since the water temperature is cold, please bring warm and long underwear layers and warm socks.  Jeans are not suitable clothing; waterproof jacket and shoes and a warm sweater are highly recommended. It’s best to wear waterproof boots. Bring contact lenses if you wear glasses and your personal daily medications if required.

Safety requirements:

Participants must have read, signed and followed directions on the online Snorkeling Medical Statement (link will also be provided in the confirmation email).

Please have our Snorkeling Medical form signed off by a doctor if you are age 60 or older.

All participants must be at minimum 150cm / maximum 200cm and minimum 45kg / maximum 120kg. Please check our dry suit size chart and make sure that you fit within our snorkeling suits.

Be at least 14 years of age on the year, be physically fit and be comfortable in the water and be able to swim.

All participants must be able to communicate in English.

Medical conditions:

Persons with recent surgery, or who are pregnant are not recommended to participate in the snorkeling tours. Please let us know of any allergies or medical conditions that you may require assistance with.

Payment and cancelation:

Full payment is required at time of booking to secure your place. We require 24 hrs notice of cancellation for a refund. Any cancellation made within less than 24 hours prior to departure will be fully charged.

Book this tour

Geothermal Snorkeling in Kleifarvatn

15.990 ISK
All prices are per person.

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