Clear water, weirdly unreal. This Silfra snorkeling tour from Reykjavik is all about glacier-water visibility and an otherworldly setting inside Thingvellir National Park. I like that you’re in a small group (max six) with step-by-step help from the guide, plus they plan for a calm pace in the water. The main consideration: even with the gear, you’re still dealing with cold—especially your hands and face, and you’ll need to be comfortable floating in open water.

My other favorite part is the payoff. You get a warm-up drink (hot chocolate) after your swim and underwater photos—typically 40–100 images—that you can download a few days later at no extra charge. One practical drawback to keep in mind: getting suited up can take time, and in peak season you might wait in gear before entering the water.

Key things I’d pay attention to

• 100m/+300ft visibility in glacial water makes the views feel like you’re in glass
• Max six people means more hands-on guidance and tighter group control in the water
• Wetsuit and drysuit options both run year-round, and you can stay in the same group
• Hot chocolate included gives you something warm to do right after you exit
• Free underwater photos a few days later is a nice add-on that saves effort on your end
• Drink the water (seriously) is one of those Silfra facts you’ll remember after you’re back on land

What Makes Silfra’s Glacier Water So Special

Silfra isn’t famous for fish and coral. It’s famous for water clarity and the geology you’re floating over. The fissure sits in Thingvellir National Park, where two tectonic plates meet with about 6–7km (roughly 4 miles) between them—so when you’re snorkeling here, you’re literally between plates.

That clarity is the headline. Average visibility is listed at +100m / +300ft. In real-world terms, it means you can see rock textures and formations with a level of detail that feels unreal. Several guides in the real world of this tour—like Gretar, Dori, and Luis—lean into this, pointing out what you’re looking at and keeping you from rushing. Think of it as a slow, guided float through a natural science lesson.

Here’s the other cool bit: the tour info explicitly notes the water is so pristine it can be sipped while snorkeling. I wouldn’t treat that as a tasting tour, but it’s a great reminder that you’re in glacier-filtered water rather than a marine environment.

Small bonus reality check: you might see the occasional small fish or freshwater algae on rocks, but the main event is the clear water and the volcanic rock field beneath you.

Thingvellir National Park Drive and Arrival at Silfra Adventure Vikings

The tour starts with a Reykjavik pickup and a drive toward Thingvellir. Expect about 45 minutes in the van to get from the city area to Silfra, with stops where you can look at the nature around the national park while you’re passing through.

When you arrive, you’ll meet your certified guide and get a briefing. This is where you learn how the snorkeling will work, how to fit the gear, and how to handle the cold water without panicking. Reviews back this up with frequent praise for guides who keep things calm and organized—people name instructors like Dori, Alex, and Ed as patient and careful.

Then comes gearing up. You’ll listen to a safety overview, get your equipment on, and (after a little time) head into the glacially flooded fissure. The tour structure is designed so you don’t feel like you’re improvising. Still, plan mentally for this to be an active half-day where you’re moving from vehicle to gear station to water.

Also: the tour says to eat breakfast before you go. That’s not just “be nice to your body.” With cold exposure and a longer prep window, you’ll feel better if you’re not starting empty.

Wetsuit vs Drysuit: Staying Warm When It’s Around 2°C

You get a real choice here, and that’s a big deal. The tour offers both wetsuit and drysuit options, and the info notes they’re the only company offering both while keeping everyone in the same group in the water.

What changes between the two:

• Wetsuits: you wear your swimsuit underneath. You still get insulation from the suit, but water contact and cold exposure can feel sharper, especially around face and hands.
• Drysuits: you’re sealed into a dry layer. Reviews often say drysuits keep you warm even in winter, but the fit can feel tight at first—especially around the neck and wrists.

A clear theme from reviews: it’s not that you’ll never get cold. It’s that the cold is manageable if you prepare correctly. One February review talked about water around 2°C, and described the main cold spots as faces and hands rather than full-body discomfort. Another common tip: bring a good base layer and thick wool socks, because your feet are small thermal weak points during snorkeling.

What I’d do to maximize comfort:

• wear long thermal underwear under your suit (the tour recommends this)
• add thick wool socks
• bring thick change-of-clothes because a tiny chance of leakage is mentioned with drysuits
• be realistic: even with great gear, your face may chill fast

If you hate the idea of being uncomfortable, choose drysuit. If you want more mobility and less bulk, wetsuit can feel easier to move in—but you’ll feel more cold.

Your Time in Silfra: 40 Minutes Between Two Tectonic Plates

Once you’re in Silfra, the key is the pace. The tour notes the current naturally carries you forward, and it encourages slow, relaxed movements rather than active swimming. That matters. When you’re cold, your instinct is to “push through” or tense up. The guides try to prevent that by keeping your breathing and body position calm so you don’t waste energy.

Timing is fairly structured:

• you’ll spend about 30–40 minutes in the water
• you’ll have a short walk back after exiting (about 5 minutes)
• then it’s warm-up time with hot chocolate

This is also where the group size helps. With up to six people, guides can watch for discomfort and keep everyone coordinated. Reviews repeatedly mention guides staying close for first-timers and helping with gear fit so cold water doesn’t get in where it shouldn’t. Names that came up in positive reviews include Gretar (excellent and calm), Dori (extra patient), and Alex (setting people up securely).

What you’ll see underwater is primarily:

• lava-field rock formations
• clean, glacial water with extreme visibility
• the “between plates” perspective as you float through the fissure

The tour isn’t about chasing animals. If you’re expecting a colorful reef, temper that expectation. If you want the wow factor of clarity plus geology, you’re in the right place.

Underwater Photos and Hot Chocolate That Close the Loop

A lot of snorkeling tours stop at the water. This one adds a finish that feels thoughtful. You’ll have underwater photos taken during your snorkeling session, and they’re provided for download a few days later free of charge.

The typical photo range is 40–100 images, depending on group size and skill level. Guides also tend to be proactive about getting good shots, including positioning people and keeping you moving at a pace that works for cameras.

If you’re a tech person: the reviews include hints about bringing a GoPro if you want your own footage. The standard tour experience includes the photographer part, but having your own camera can give you extra angles and options.

After the water, you’ll warm up with hot chocolate. This seems small until you’re actually out of the suit and moving around in cold air. It’s a “reset button,” and it turns the exit into something more pleasant than just shivering and re-zipping your jacket.

The photos plus hot chocolate is also part of the value story. You’re paying for access, gear, and guide time—but you’re also getting a memory bundle that’s ready soon after you’re back in Reykjavik.

Practical Packing Tips for Comfort, Mobility, and Dry Clothes

This is an Iceland tour, so you should pack for cold and wind-chill around the edges. The tour info gives a few clear rules, and I’d follow them exactly:

• bring a swimsuit and a towel
• don’t wear glasses; use contact lenses or your own prescription mask
• avoid jeans and “fashion layers”—dress according to weather and comfort
• no healed/jeans (the tour specifically warns against this type of footwear/clothing)

Base layer and feet matter more than you think. Wool socks are strongly recommended, and thick socks help a lot because your feet don’t generate as much heat as your core.

Mobility is another real factor:

• drysuits can feel tight around the neck and wrists
• one review theme was that drysuits can be a bit restrictive, so your movements may feel slower
• the tour tries to solve this by encouraging relaxed, float-style snorkeling rather than swimming hard

One more practical point: there can be a wait in gear. A review mentioned waiting in suits before getting into the water (about 30 minutes) and said it wasn’t fun. You can’t fully control that, but you can control how prepared you are—arrive on time, stay calm, and use the base layers and suit fit checks to keep discomfort low.

Finally, bring a change of clothes. Even if everything goes right, you’ll appreciate it. The tour notes there’s a very small chance of drysuit leaks, and reviews also mention getting a little wet at hands or hair.

Should You Book This Silfra Snorkeling Tour from Reykjavik?

If you want the Silfra experience without turning it into a logistics project, this is a strong pick. The value is in the full package: pickup and drop-off from Reykjavik, equipment, guide support, hot chocolate, and underwater photos. At $189 per person, you’re not just paying for time in water—you’re paying to be safely outfitted, guided in a cold environment, and photographed so you don’t miss the one moment you’ll want to remember later.

I’d especially recommend it if:

• you like geology and clear-water “wow” more than wildlife snorkeling
• you want a small group experience (max six)
• you want photos without extra effort
• you’re okay following instructions and staying comfortable in cold gear

I’d hesitate if:

• you’re very sensitive to cold and don’t want to do the base-layer work
• you don’t like waiting around before activities start (peak season can mean longer prep time)
• you need heavy eye-glasses support (the tour says no glasses; you’ll need contacts or a prescription mask)

One last decision tip: if you’re choosing between wetsuit and drysuit, don’t overthink the word choice. Think about what you hate most—bulk and tight fit, or more cold around your extremities. Several reviews strongly suggested drysuit for winter comfort.

If you’re aiming for a bucket-list moment that looks like a sci-fi science exhibit, this tour fits the bill.

FAQ

How long is the Silfra snorkeling tour?

The tour runs about 5 hours (approx.). You’ll spend around 30–40 minutes in the water before warming up afterward.

What are the pickup times from Reykjavik?

In summer (March–October), pickup is at 09:00 with a pickup window between 07:30 and 08:00. In winter (November–February), there are two options: 09:30 pickup between 08:00 and 08:30, and 12:30 pickup between 11:00 and 11:30.

Is round-trip transportation from Reykjavik included?

Yes. Pickup and drop-off in Reykjavik are included.

Do I get underwater photos?

Yes. You’ll receive underwater photos from your excursion, typically 40–100 images, available for download a few days later free of charge.

Wetsuit or drysuit options—can I choose?

Yes. The tour offers both wetsuit and drysuit options, and groups can include people booked in either suit type while still snorkeling together.

What should I bring with me?

Bring a swimsuit and a towel. The tour also recommends thick wool socks (preferably) and a change of clothes for after.

Do I need to know how to swim?

Yes. All participants must know how to swim and be comfortable in the water.

Are glasses allowed?

No. Don’t wear glasses. Use contact lenses or bring your own prescription mask if you have one.

What’s the age requirement and any medical form?

Minimum age is 12. You’ll need to fill out a medical form before participating, and participants over 65 need physician approval.

Is there a cancellation option if plans change?

Yes. Free cancellation is available up to 24 hours in advance for a full refund. Canceling less than 24 hours before the start time won’t be refunded.