As Kauai is the oldest island in the archipelago, the barrier reefs have had time to develop. Snorkeling can be carried out in good safety conditions, although you need to take into account the incoming and outgoing currents in the small “lagoons”.

Most of the snorkeling spots in Kauai, such as Ke’e Beach or Tunnels Beach, are on the northern coast of the island (North Shore). In winter, it is beaten by impressive waves so that, despite the shelter offered by the coral barriers, these spots are impracticable.

Snorkeling Tunnels Beach, Kauai
It is common to meet a Hawaii monk seal hunting on the reef off Tunnels Beach.

450 species of fish and 70 species of coral populate the Hawaiian reefs, including a quarter that are native to the archipelago. In Kauai you will have the best chance to come across a Hawaiian monk seal on the beach or in the water. This endangered species is endemic to Hawaii, and most seals live in the north-western islands, while regularly visiting the northern coast of the island.

Snorkeling Kee Beach lagoon, Kauai
Ke’e Beach and its small shallow lagoon are located at the foot of Na Pali Coast cliffs.

When to go snorkeling Kauai?

As elsewhere in the archipelago, there are two main seasons in Kauai. The summer, from May to October, is the warmest, driest and sunniest season (with an average of 80°F/26.5°C, and maximum temperatures of 85°F/29.5°C). This is the hurricane season, but they are rare in the North Pacific. In winter, from November to April, the weather is wetter and more changeable (intermittent tropical rains and sunny spells), and the air is cooler (an average of 75°F/24°C, with maximum temperatures of 78°F/25.5°C).

The water temperature can fall to 73°F/23°C in winter (which is still a good temperature for snorkeling), and reach a peak of 82-84°F/28-29°C in the heart of the summer (June to September). Lastly, you should remember that winter is the surfing season in Hawaii, and it is sometimes hard for snorkelers to access the northern coast of Kauai (North Shore) during this period.

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Variable, high waves in some areas
Warm and sunny
Variable

New snorkeling spots to share in Hawaii?

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More than 170 spots have already been published on Snorkeling Report, but there are still many spots to be added! You too can contribute to populate the map by sharing your favorite snorkeling spots around the world. The more snorkelers will contribute, the easier it will be for you, and other snorkelers, to find sites and enjoy the underwater world!

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Where to spot them?

Discover on which snorkeling spots you are most likely to see your favorite species
Our favorite spots in Kauai

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