Silfra Fissure in Thingvellir National Park is one of Iceland’s most unforgettable experiences. It’s the only place in the world where you can swim between two continents in crystal-clear glacial water.
Whether you're snorkeling, diving, or exploring nearby attractions, Silfra delivers something truly unique. This guide will help you plan your visit with practical tips, highlights, and everything you can expect once you arrive.
What Makes Silfra Fissure Unique
Silfra is the only place in the world where you can swim between two tectonic plates—the North American and Eurasian. The water is evident, with visibility up to 100 meters.
This is because the glacial water is filtered through underground lava rock for decades before it reaches the fissure. The result is a clean, cold, and surreal underwater environment you won’t find anywhere else.
Things to Do at Silfra Fissure in Thingvellir National Park
Snorkeling in Silfra
Immerse yourself in one of the most extraordinary snorkeling experiences in the world at Silfra Fissure. Here, equipped with dry suits and all necessary snorkeling gear, visitors can float effortlessly in near-freezing waters.
The fissure is famous for its outstanding visibility, often up to 100 meters, allowing you to see the stunning underwater scenery in vivid detail. The vibrant colors of the algae and the surreal clarity of the water make this an almost otherworldly experience.
Diving Tours
For those looking for a deeper adventure, diving tours are available. These tours allow you to explore more thoroughly the depths of Silfra, navigating between narrow canyon walls adorned with marine algae.
Divers often describe feeling as if they are flying due to the clarity of the water and the depth of the fissure. These tours require diving certification, as they go deeper into the cold, clear waters.
Photography Opportunities
Silfra is a paradise for underwater photographers. The exceptional visibility and unique geological formations provide once-in-a-lifetime shots.
Both snorkelers and divers can capture images of the dramatic underwater landscapes where the continental plates of North America and Eurasia drift apart.
Guided Tours
To ensure safety and enhance educational value, Silfra Guided Snorkeling Tours are highly recommended. Professional Snorkeling Guides in Silfra provide fascinating insights into the geological history of the fissure and the surrounding area.
They also ensure that all safety measures are observed, which is especially important in an environment as challenging as Silfra.
Relaxing by Silfra
For those who prefer to stay dry, the area around Silfra Fissure offers beautiful views and picnic spots. The clear water can be admired from the surface, and the surrounding Thingvellir National Park is perfect for leisurely walks and nature observation.
Cultural and Historical Significance
Beyond the natural beauty, Silfra and Thingvellir are steeped in historical significance. The park is not only a natural wonder but also a cultural treasure, being the original site of Iceland's ancient parliament, the Alþingi.
Visitors can explore the historical sites and learn about the Viking heritage of the area.
Best Time to Go Snorkeling in Silfra
The best time to snorkel in Silfra is during summer, from June to August, when the weather is milder and daylight lasts nearly all day. The water stays cold year-round at 2°C to 4°C (35°F to 39°F), but the warmer air makes getting in and out more comfortable.
Winter snorkeling is colder but offers a peaceful, snow-covered landscape and dramatic lighting. Visibility stays excellent in all seasons, so you’ll always get clear underwater views.
Spring and fall are also good options if you want fewer crowds and a quieter experience. Silfra is open year-round, and each season gives a different perspective of this unique place.
How to Get to Silfra
Distance from Reykjavik
Silfra Fissure is located inside Thingvellir National Park, around 45 kilometers (28 miles) from Reykjavik. The drive takes about 40 to 50 minutes under normal conditions, making it an easy half-day or full-day trip from the city.
Renting a Car
Renting a car in Reykjavik is a popular option for visitors who want more flexibility. From the city, you can follow Route 36 east toward Thingvellir.
The roads are paved and clearly marked, making it easy to drive a rental car safely in good conditions. In winter, be cautious, as snow and ice can make driving tricky, so always check the weather and road updates before setting out.
Public Transportation
There is no direct public transport to Silfra. Buses may get you to Thingvellir, but not close to the snorkeling site.
Walking from the nearest bus stop is not practical, especially in cold weather or with gear.
Guided Tour with Transport
The most convenient option is to book a Silfra snorkeling tour with pickup from Reykjavik. Many tour companies offer hotel pickup and include transportation, equipment, and park fees.
It’s a stress-free way to experience Silfra, especially if you’re not comfortable driving in Iceland
Top Attractions Near Thingvellir National Park
Öxarárfoss Waterfall
Öxarárfoss Waterfall is located inside Thingvellir National Park, and this picturesque waterfall is easily accessible via a short walk from the main parking area. A peaceful spot surrounded by lava rock and mossy trails.
Laugarvatn Fontana
Laugavatn Fontana is just 20 minutes from Thingvellir, and this lakeside geothermal spa is ideal for warming up after snorkeling. Soak in hot pools and steam baths while enjoying views over Lake Laugarvatn.
Kerið Crater
Kerið Crater is about 35 minutes away, and this colorful volcanic crater features red slopes and a vivid blue lake. A quick loop around the rim offers great views and photo opportunities.
Friðheimar Tomato Farm
Friðheimar Tomato Farm is roughly 40 minutes from Thingvellir, and this unique greenhouse restaurant offers fresh tomato-based dishes and insight into sustainable farming using Iceland’s geothermal energy.
Geysir Geothermal Area
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Located in Haukadalur Valley and around 45 minutes from Thingvellir, the Geysir area is home to Strokkur, a geyser that erupts every 5–10 minutes. It’s one of the highlights of the Golden Circle.
Tips for Snorkeling in Silfra Fissure
- Make sure you can swim and meet the physical requirements (age, height, weight, and fitness level).
- Wear thermal base layers and thick wool socks to stay warm under your drysuit or wetsuit.
- Listen carefully to your guide’s safety briefing and follow all instructions.
- Arrive early to allow time for check-in, gear fitting, and preparation.
- Bring a towel and a change of clothes in case anything gets wet.
- Stay hydrated and avoid alcohol before the tour to feel your best in the cold water.
Start Your Silfra Experience Today
Visiting Silfra Fissure is more than just a snorkeling trip; it’s a dive into the depths of Earth’s history. Whether floating between continental plates or simply soaking up the natural and historical significance of Thingvellir, Silfra offers an unforgettable experience.
For a memorable and well-guided Silfra Fissure experience, book with Golden Circle Day Tours—experts in comfortable, small-group adventures that make the most of your time in Thingvellir National Park.
