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.
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.
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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Occasionally sighted at sea at Tunnels Beach, rare in Ke’e Beach
On all spots, even a few meters from the shore
On all spots
On all spots, common on Ke’e Beach reef flat
On all spots, common on Tunnels Beach drop off
Shallow lagoon and reef drop off visited by monk seals
Level: Free shore access
Shallow lagoon with many reef fish
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