The Na Pali Coast of Kauai: A Guide to the Cliffs, Valleys and the State Park

Location, Length and Cliff Heights

The Na Pali Coast runs along the northwest side of Kauai, one of the eight main Hawaiian Islands. Hawaii State Parks measures the Napali Coast at 16 miles, running from Polihale Beach in the southwest to Kee Beach in the northeast. Go Hawaii and one tour operator put it at 17 miles, so sources differ by a mile. Call it 16 to 17 miles and you are covered.

The cliff heights also carry a conflict. Wikipedia says the Na Pali cliffs rise as much as 4,000 feet (1,200 m) above the Pacific, a figure Capt Andy's repeats. Blue Hawaiian, a helicopter operator, describes the coast as 17 miles of 3,000-foot sea cliffs. Both numbers appear in print. What the sources agree on is that no road crosses them.

Polihale State Park marks the southwestern end. Its dunes reach nearly 100 feet and the access road is a dirt sugarcane haul road where four-wheel drive is preferable. Polihale is the most western publicly accessible area in Hawaii. At the northeastern end, Kee Beach sits at the end of Highway 560 and is the Kalalau Trail trailhead.

Between those two beaches, the stretch from Polihale to Kalalau Beach can only be reached by boat or helicopter. The state says boat is the only legal way to reach the Na Pali shore areas other than hiking, through permitted concessionaires. Hawaii State Parks puts the Napali park 41 miles from Lihue Airport via Haena State Park, and Go Hawaii says Haena and the coast lie about 90 minutes north of Lihue. Go Hawaii also describes the coast as largely inaccessible by land or water, which is the honest warning.

The protected area has two layers. Na Pali Coast State Wilderness Park covers 6,175 acres (2,499 hectares) and was established in part to protect Kalalau Valley. Next to it, Hono O Na Pali State Natural Reserve was established in 1983 and extended to 3,578 acres in 2009. The park holds deep narrow valleys that end at the sea, waterfalls, and extensive stone-walled terraces on the valley floors. Camping areas on the coast are Kalalau, Hanakoa and Milolii, all needing a permit.

One dated note on access. Hurricane Lowell closed all Kauai state parks from September 8, 2026, including the Na Pali Coast. DLNR lists Kikiaola Small Boat Harbor as closed until further notice, and at Port Allen the launch ramp reopened on October 2, 2026 while slips and moorings stayed closed. Confirm the current status and your departure point with the operator before you drive anywhere on this coast.

The Valleys, Beaches and Sea Caves

Six valleys and a handful of sea caves carry the names you will hear from every captain. The valleys were cut by water flow starting about 5 million years ago, and each ends at the ocean with a beach, a waterfall or both. Kalalau is the largest and the only one with a trailhead connection, via the 11-mile Kalalau Trail.

Honopu is the one no boat may land on. Nualolo Kai is the reef that three permitted raft operators can land on for snorkeling. The table below gathers what each place is and how you see it, with the figures drawn from the state, Wikipedia and the tour operators who run the water.

How the Cliffs Were Built

Kauai itself is about 5 million years old, an eroded shield volcano formed as the Pacific Plate passed over the Hawaii hotspot. The Na Pali valleys were carved by water flow starting about 5 million years ago, which makes the valleys nearly as old as the island. Rain did the cutting. Mount Waialeale, the volcano's high point at 5,148 feet (1,569 m), averaged more than 373 inches of rain a year since 1912, with a peak of 683 inches in 1982, and that water ran off the northwest flank for millennia.

The result is the fluted ridgework you see from the water: narrow valleys ending at the sea, waterfalls dropping from the cliff tops, and sea caves cut into the base of the escarpment. Open Ceiling Cave shows the process in action. It was a closed lava tube whose roof collapsed through wave erosion, leaving the hole that gives it the Hawaiian name Pukalani, meaning hole into the heavens. Waiahuakua is called the largest sea cave on the coast, at about 1,155 feet long. The stone-walled terraces on the valley floors are the human layer on top of the geological one.

Settlement, Trade and the Emptying Valleys

Polynesian navigators first settled the Na Pali coast around 1200 AD, followed by a Tahitian migration, per Wikipedia. The valleys became working communities. Kalalau's residents farmed taro on extensive terraced fields, and the terraces on the valley floors are still listed by the state as a feature of the park. The Na Pali valleys served as a trade hub connecting Hanalei, Waimea and Niihau.

Captain Cook visited Kauai in 1778. After contact, the native population of the Na Pali valleys declined as Western diseases arrived. Native Hawaiians lived in Kalalau Valley into the 20th century, farming taro on the terraces. State park designation prohibits permanent residence in Kalalau.

The terraces remain fragile. Invasive tree roots are damaging the stone walls of Kalalau's terraced gardens, and the valley is home to two endangered endemic plants, Dubautia kalalauensis and Schiedea attenuata. That is part of why landing rules are strict. First-offense illegal camping citations at Kalalau carry fines up to $500, and only three permitted raft operators may land at the Nualolo Kai reef.

Films Shot on the Na Pali Coast

Kauai has featured in more than 70 Hollywood movies and TV shows, and the Na Pali area carries a good share of them. Jurassic Park (1993) used Napali aerial footage and Kalalau Trail filming, with the coast standing in for Isla Nublar. Hurricane Iniki struck on September 11, 1992, the last day of that filming. King Kong (1976) used Kalalau Valley as Skull Island. Honopu Beach served as Shipwreck Cove in Pirates of the Caribbean: On Stranger Tides (2011). Six Days Seven Nights (1998) filmed at Honopu Arch, Makawehi Bluff and the Nualolo Trail.

The list goes back further and forward too. South Pacific (1958) made Makana Mountain at Haena famous as the real Bali Hai peak. George of the Jungle (1997), Hobbs & Shaw (2019) and the 1976 King Kong round out the films Kauai Now News names for the Napali area. Honopu Arch and the Kalalau cliffs can be seen from the water. Manawaiopuna Falls in Hanapepe Valley, the 400-foot waterfall in the background of Jurassic Park, is a helicopter stop instead. Wikipedia says landing there was banned until 2009, when Island Helicopters got permission for limited weekly visits.

Compare the Four Options

Each way shows a different face of the coast. Boats run at water level past the cliffs and, on the right trips, the sea caves and a snorkel stop. Most helicopters lift from Lihue and reach the full landscape, including areas unreachable otherwise. The Kalalau Trail covers 11 miles one way from Kee Beach to Kalalau Valley and needs permits past the 2-mile point. The Kokee lookouts give views down into Kalalau Valley from the rim. The table sums up what each one shows, how long it takes and who it suits.

For the helicopter side in detail, see the Na Pali Coast helicopter tour page. For the trail, including permits and hazards, see the Kalalau Trail guide, and for entry reservations to Haena State Park at the trailhead, see the Haena State Park page.

Boat Tours in Short

Boats are the most bookable option and the only way onto the water. Catamaran snorkel trips from Port Allen run 4.5 to 7 hours, like the Holo Holo Sail and Snorkel at $274 per person with breakfast and a deli lunch on board, or the Amelia K Boat Tour at $227.13 with a 4.9 rating across 2,065 reviews. Some raft trips leave from Kikiaola and enter the sea caves when the sea allows, though that harbor is listed as closed until further notice, so confirm the departure point with the operator.

The full side-by-side comparison of departure harbors, durations, inclusions and prices sits on the Napali Coast boat tours homepage.

Summer Against Winter Seas

Summer lowers the north-shore swell and brings steadier trade winds, which is why Makana Charters calls June through August the busiest stretch on the water, with fewer cancellations and better access to the sea caves and Nualolo Kai. Raft tours become significantly rougher in fall, per Hawaii Guide, while catamarans run year-round, with earlier departures and shorter snorkel stops in fall. Morning departures have better conditions and afternoons turn bumpier as the wind picks up.

Winter brings humpback whales, roughly December to April with the peak from January to March, though winter and spring swells are more common, per Capt Andy's. Sea cave entry depends entirely on ocean conditions and is never guaranteed, whatever the month. Weather cancellation by the operator brings a full refund per Holo Holo, and tours proceed in rain unless lightning is a safety concern.

Trail and Park Rules

The Kalalau Trail starts at Kee Beach at the end of Highway 560, inside Haena State Park, which caps entry at 900 visitors a day and needs advance reservations. Hiking beyond Hanakapiai at mile 2 requires a valid Na Pali camping permit, and no day-use permits are issued past that point. Kalalau permits cap stays at 5 consecutive nights, Hanakoa allows one night and Milolii allows 3 days.

Camping permits release 90 days ahead and often sell out months in advance in summer. No commercial boat may legally drop passengers at the Kalalau or Milolii camping areas, and kayak landings are allowed only at Kalalau and Milolii.

Hurricane Lowell Closures

Hurricane Lowell closed all Kauai state parks from September 8, 2026, including the Na Pali Coast. After the storm, Port Allen Small Boat Harbor had closed slips and moorings with extensive damage, and its launch ramp reopened on October 2, 2026 while the slips stayed shut. DLNR lists Kikiaola Small Boat Harbor, the departure point for several raft operators, as closed until further notice. Haena State Park was listed as scheduled to reopen on October 15, 2026, with day hiking to Hanakapiai Beach and Falls open but the trail beyond mile 2 and all Kauai camping closed until further notice.

None of this predicts the situation on your travel day. Check the official status of the parks and harbors before you go, and confirm the vessel, check-in address and operating status with the operator before driving.