The seven-hour Niihau and Na Pali Coast boat day
Holo Holo Charters runs one trip that goes past the end of the Na Pali Coast and across the channel to Niihau. It takes seven hours, costs ~$339 and is the priciest seat on our list. This page covers what the day includes, who should skip it and how it compares with the half-day boats.
What the long day covers
The Niihau trip is a full day out of Port Allen on a catamaran custom-built on Kauai. It runs about seven hours, and it is the only trip on our list that leaves Kauai's own coastline behind.
The plan has two halves. First comes the Na Pali Coast, with waterfalls, valleys, hidden beaches and sea caves seen from the boat. Then the catamaran crosses the channel to Niihau for a snorkel stop and lunch.
Check-in is at the Holo Holo desk in Suite 5A of the Port Allen Marina Center, 4353 Waialo Rd in Eleele. There is no hotel pickup, so plan the drive and bring ID, since the listing asks for it.
Niihau, seen from the water
Niihau is known as the Forbidden Isle. It is privately owned and closed to visitors, so this trip shows it to you from the boat, and nobody goes ashore.
For most people the island is a sight on the horizon from Kauai's west side. Seeing its shoreline up close is the part the half-day boats cannot offer, since they turn around at the Na Pali Coast and head home.
Snorkeling at Lehua Crater
The snorkel stop is at Lehua, a crescent-shaped crater off Niihau. It is the most remote snorkel of the six tours we compare, far from the reefs the other boats use along Kauai.
Holo Holo bans full-face snorkel masks and asks guests not to snorkel within 24 hours after a flight longer than five hours. If you land from the mainland the day before, pick a later date for this trip.
Spinner dolphins and green sea turtles turn up on many Na Pali trips, and the long crossing gives you more hours to watch for them. No boat can promise either, so treat any sighting as a bonus.
As on any boat, the stop depends on the sea. Our page on where the boats snorkel sets Lehua beside the reef stops of the other five trips.
Food and drink through the day
The day starts with a continental breakfast on board. After the Na Pali run and the snorkel, a deli buffet lunch is served, with soft drinks throughout.
Beer and wine come out after snorkeling, not before, which keeps the swim sober. For seven hours on the water that menu is fairly simple, so bring snacks you like if you get hungry between meals.
For a whole day past the end of Kauai
Holo Holo's full-day catamaran trip from Port Allen, with breakfast, the Na Pali Coast, a snorkel at Lehua Crater off Niihau and a deli lunch. Sold on GetYourGuide only.
The rules that rule people out
This listing is stricter than most, and the limits are firm. Children under 5 cannot come, and neither can pregnant guests. The trip is not suited to anyone with back problems or severe seasickness.
Mobility aids are not allowed on board, and IDs are required at check-in. Holo Holo also states that there are no refunds for seasickness, which matters more on a seven-hour day than on a short one.
Families with younger children have other options, set out in our page on Na Pali with children. If you are unsure how you handle swell, read our guide to rough seas and refunds first.
When the sea changes the plan
Routes depend on ocean conditions, and the captain may decide the day's plan at check-in. The channel to Niihau is open water, so a windy day can mean a different route from the one on the listing.
Read the listing's wording on what happens if the crossing is off before you book. Free cancellation applies up to 24 hours before on the listing we read, and our page on the calm months covers when the sea tends to settle.
Book the Niihau day early in your stay. If the sea or the captain changes the route, you still have time to try again on a calmer date.
The long day or a half-day boat?
The Niihau day at ~$339 holds 4.7 from 100+ reviews on GetYourGuide, but its value-for-money score is lower at 4.4. Some guests clearly feel the price runs ahead of the day, and that is the main catch.
Holo Holo's own sail and snorkel trip at ~$292 covers the Na Pali Coast in about five hours on the water. It serves breakfast and a deli lunch and adds a waterslide, though it skips Niihau.
For speed and the sea caves, our pick is Na Pali Riders' Zodiac at ~$255, four hours on a rough and wet raft. It rates 4.9 from 900+ reviews on Viator, though it serves fruit and chips rather than meals.
Who the long day suits
The trip works best for strong sailors who want the coast and the remote snorkel in a single outing. If you have already seen Na Pali from the air or the trail, the Niihau leg adds something new.
It suits a family with older children less well, and it suits a nervous swimmer less still. Our fare comparison sets the price against the other five, and our harbor guide covers parking and check-in at Port Allen.
Length of stay matters too. On a short visit, a half-day boat leaves the afternoon free for Waimea Canyon or a beach, while a week on Kauai can absorb one full day at sea without crowding out everything else.