Free Things To Do on Kauai and the Big Island

Interisland flights are short and the good stuff on the other islands mostly costs nothing once you land. The best free things to do on Kauai and Hawaiʻi Island are beaches, lookouts, and water you can walk into — no tour, no ticket, no booking. Here are four on each island worth building a day around.

Free things to do on Kauai#

Kauaʻi is small enough to drive end to end in a morning, and the road stops at both ends, which means everything below sits on one loop. Rain moves through fast on the north shore; wait it out rather than rearranging your day.

Hanalei Bay and the pier#

A two-mile crescent of sand under green mountains with waterfalls running down them after rain. The old pier at the east end is the shot everybody knows, and walking out on it costs nothing.

Summer is the calm season here and winter brings serious surf — in big swell this is a watching beach, not a swimming beach. Park in town and walk down; the lots near the beach fill early on clear days.

Poʻipū Beach on the south shore#

Sunnier and drier than the north, with a protected pocket that's good for a lazy float. Hawaiian monk seals haul out on this sand regularly, and green sea turtles come in close.

Keep your distance from both. If a seal is resting, stay well back and don't crowd it for a photo — volunteers often rope off an area, and that rope is there for a reason. Never touch or feed a turtle.

Spouting Horn#

A lava tube on the south shore that fires a plume of seawater into the air every time a set rolls in, with a groaning sound underneath it. There's a paved overlook, a rail, and usually a few craft vendors in the lot.

Ten minutes, no cost, and it's genuinely loud. Stay behind the barrier — the rocks below are wet, sharp, and washed by surge.

The Kalalau lookout in Kōkeʻe#

Drive up past Waimea Canyon and the road ends near a viewpoint that looks straight down a valley into the Nāpali Coast. It's the single best view on the island you can reach in a car.

The viewpoint itself is the thing, but note that state park entry and parking fees apply for non-residents at these sites, so check current fees before you go. Get there in the morning — clouds fill the valley by midday and you'll be looking at white.

Also free and worth a stop: the ʻŌpaekaʻa Falls roadside lookout and the Wailua River viewpoints on the east side, and a walk or ride on Ke Ala Hele Makalae, the Kauaʻi coastal path along the east shore.

Free things to do on Hawaiʻi Island#

The Big Island earns its name — Kona to Hilo is a real drive across a real mountain range. Pick a side per day instead of trying to do both.

Kahaluʻu Beach Park and a Kona sunset#

Kahaluʻu is the easiest snorkeling on the island: you walk in from shore into a sheltered bay full of fish and turtles. Bring your own gear and it's free.

Then drive up the coast for sunset at Magic Sands, where the sand genuinely comes and goes with the swell. Mineral sunscreen only, don't stand on coral, and give turtles a wide berth in the water.

Rainbow Falls in Hilo#

An 80-foot waterfall a few minutes from downtown Hilo with a paved overlook and no admission. Mornings are best — that's when the light angles in and gives the falls their name.

Go after rain for volume. Stay on the paved paths and behind the rails; the rock above the falls is slick and people have gotten hurt there.

Punaluʻu Black Sand Beach#

Jet-black sand on the Kaʻū coast, made of lava, with green sea turtles that regularly haul out to rest on it. It's a strange and beautiful place to stand.

Look, don't touch. Stay back from resting turtles, don't get between a turtle and the water, and don't take the sand — it's illegal and locals will tell you so.

Mauna Kea sunset from the visitor station#

The visitor information station sits partway up the mountain, and watching the sun drop below the cloud layer from there is unforgettable. It's high, it's genuinely cold after dark, and altitude affects people fast.

Bring layers, take it slow, and don't go higher without the right vehicle. Access and hours change, so check current conditions and rules before you drive up.

Two more worth your time: the Hilo Farmers Market, and the national historical parks at Kaloko-Honokōhau and Puʻuhonua o Hōnaunau — those carry a modest entry fee and are often free on fee-free days, so check before you go.

Island-hopping?#

If Maui's next, free things to do in Maui covers that side. And when you're back home, free things to do on Oʻahu has the same list for the island you actually live on.

Make it a plan#

Neighbor-island days are better with company, and so are the ones between trips. YKnot is where people open the spare seats on plans they're already doing — a snorkel, a lookout drive, a sunset. Join someone's line, or open your own and see who's nearby.

Go see the other islands. 🌅