Iceland is famous worldwide for snorkeling and diving in fissures, these deep cracks between the North American and Eurasian continents resulting of tectonic movements. Filled with amazingly clear water, it creates unique and spectacular underwater landscapes.

Snorkeling the Silfra Fissure, Iceland
The Silfra fissure, located in Thingvellir National Park, about sixty kilometers from Reykjavik.

The Silfra fissure, which is often rated as one of the Top 10 dive sites in the world is Iceland’s most popular snorkeling spot and is not to be missed if you are visiting the country. Davidsgja ad Nesgja, less known, and less crowded, are also great options.

Even if a few spots only are suitable for snorkeling in Iceland, some diving clubs offer tours in the geothermal chimney of Strytan, the underwater hot springs of Lake Kleifarvatn, and the warm river Litlaa.

Snorkeling the Silfra Fissure, Iceland
Unique underwater landscapes await in Silfra fissure.

When to go snorkeling in Iceland?

Iceland has a cold climate, with cool summers and no dry season, and a very strong variability. June, July, and September are the warmest months, with an average temperature of 13°C/55°F, and January is the coldest month with an average of 1°C/33°F.

From the end of November to January, the winter darkness limits outdoor activities, and the temperatures can be as low as -4°F/-20°C. For these reasons, Iceland has a concentrated tourist season, peaking from mid-June through August.

Cold-water snorkeling (for example in Silfra, with a constant water temperature around 2 to 4°C) is challenging and requires specialized gear, including thermal underwear and full-body drysuits.”‘

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