Most people land on Kauai wondering what to do first — and the answer usually surprises them. It’s not just a beach vacation. What to do in Kauai comes down to one big draw (the Na Pali Coast) and a long list of smaller ones that add up to a real trip.
Quick answer: The best things to do in Kauai are seeing the Na Pali Coast by boat or helicopter, hiking or driving to Waimea Canyon, swimming at Poipu or Hanalei Bay, and exploring small towns like Hanalei and Hanapepe. If you’re mapping out what to do in Kauai over multiple days, plan at least 5–7 to cover the North Shore, South Shore, and interior without rushing.
Kauai is the oldest of the main Hawaiian islands, and it looks it. There’s no direct road around the island, so figuring out what to do in Kauai really means figuring out which side — north or south — you’ll base yourself on.
What to Do in Kauai First — See the Na Pali Coast
If you only decide one thing about what to do in Kauai, decide this. The Na Pali Coast is a 17-mile stretch of sea cliffs on the northwest shore, and there’s no road to it — you get there by water, air, or foot.
Boat tour. A catamaran or raft tour along the coastline is the most popular way to experience what to do in Kauai for most first-timers. You get close to sea caves, waterfalls, and often dolphins or, in winter, humpback whales.
Helicopter tour. This is the only way to see Waimea Canyon, the Na Pali Coast, and the interior waterfalls in one trip — often called the single best splurge on any Kauai itinerary.
Hiking the Kalalau Trail. The full 11-mile trail requires a permit and serious fitness. Most visitors hike the first two miles to Hanakapiai Beach instead — no permit needed, and still a real Na Pali experience.
| Option | Cost | Time | Best for |
|---|---|---|---|
| Catamaran/boat tour | $$ | 3–5 hrs | Most travelers, wildlife viewing |
| Helicopter tour | $$$ | 45–90 min | Seeing the whole island |
| Kalalau Trail (partial) | Free (permit for full trail) | 4 hrs round trip | Hikers, budget travelers |
What to Do in Kauai’s Interior — Waimea Canyon and Hiking
A big part of what to do in Kauai happens away from the ocean entirely. Waimea Canyon, sometimes called the “Grand Canyon of the Pacific,” cuts 3,600 feet into the island’s west side.
Drive up Waimea Canyon Drive and you’ll pass several lookouts before reaching Koke’e State Park, where the road dead-ends at the Kalalau Lookout — a Na Pali view from above that most boat and helicopter passengers never see. It’s one of the best free things to do in Kauai, and one of the highest-value stops on any list of what to do in Kauai on a budget.
Beyond the canyon, hiking rounds out what to do in Kauai for outdoor travelers: the Awa’awapuhi Trail for canyon views without crowds, the Sleeping Giant Trail for a shorter workout with ocean views, and the Kuilau Ridge Trail as an easier family option.
Quick Takeaway: If you’re short on time, the drive-up lookouts at Waimea Canyon deliver most of the visual payoff of the full hikes with a fraction of the effort — a smart move if you’re narrowing down what to do in Kauai in just one day.
What to Do in Kauai for Beach Days — Best Beaches by Region
Beach choice is one of the most location-dependent parts of what to do in Kauai, since driving across the island for a swim eats your day.
South Shore (Poipu): Poipu Beach Park is the safest bet for families — protected water, lifeguards, and a decent chance of spotting a Hawaiian monk seal.
North Shore: Hanalei Bay is the classic Kauai postcard beach — wide and calm in summer, with real surf in winter. Tunnels Beach and Ke’e Beach both offer strong snorkeling.
East Side: Lydgate Beach Park’s rock-walled lagoon is close to foolproof for young kids, with a playground on the sand.
Off the beaten path: Polihale State Park, reachable mainly by 4WD, is one of the wildest, least crowded answers to what to do in Kauai if you want to skip the crowds entirely.
What to Do in Kauai Beyond the Beach — Adventure Activities
Kauai’s activity list goes well past hiking and swimming, and this section covers what to do in Kauai for travelers chasing something different.
- Mountain tubing — floating down old sugar plantation irrigation tunnels near Lihue; one of the most underrated answers to what to do in Kauai.
- Kayaking the Wailua River — Hawaii’s only navigable river, leading to the Fern Grotto and waterfalls.
- Ziplining — courses through the island’s interior valleys.
- ATV tours — off-road routes through former plantation land on the east side.
- Snorkeling and surfing — conditions rotate by season and coast.
What to Do in Kauai’s Small Towns
Kauai rewards people who get out of the car, and the small towns are an underrated piece of what to do in Kauai.
Hanalei on the North Shore is the easiest place for a slow morning — shave ice, coffee, and taro fields as a backdrop.
Hanapepe, on the west side, is Kauai’s “art town,” with a Friday night art walk and a swinging footbridge.
Limahuli Garden and Preserve is the best cultural stop if you want context on native Hawaiian agriculture rather than just scenery.
What to Do in Kauai — Planning Your Trip
The last piece of what to do in Kauai is logistics: where to stay, when to go, and how long to spend.
Where to stay: Poipu (south) and Princeville (north) have the most resort and rental options; Lihue, near the airport, is more budget-friendly but has fewer choices.
Best time to go: Kauai stays warm year-round (79–86°F), so crowds and price — not weather — drive the best timing. Christmas/New Year and summer are busiest and priciest.
How many days: Give yourself at least 5–7 days to properly cover what to do in Kauai across both coasts. Shorter trips work if you pick one region and accept you’ll miss the other.
Rainy day plan: The North Shore gets more rain than the South. If a wet day hits, head south or check out Kapa’a’s food trucks.
If you’re planning another destination too, check out our Alaska and Hawaii travel guides for more trip ideas.
FAQ Section
How many days do you need in Kauai?
Most visitors need at least 5–7 days to see both the North and South Shores without rushing. Shorter trips work if you focus on one region, since there’s no direct road connecting the two sides of the island.
Is Kauai worth visiting?
Yes — it’s known for the Na Pali Coast, Waimea Canyon, and a slower pace than Oahu or Maui. It suits travelers who want dramatic scenery and outdoor activity over nightlife or shopping.
What’s the best way to see the Na Pali Coast?
Boat tours are the most popular and affordable option; helicopter tours show you the canyon and interior too, at a higher price; hiking the Kalalau Trail (or its first two miles to Hanakapiai) is the free but physically demanding route.
What is Kauai known for?
Kauai is known as the “Garden Isle” for its lush, rainy interior, plus the Na Pali Coast, Waimea Canyon, and being a filming location for more than 60 movies and TV shows.
Do you need a car in Kauai?
Yes, in almost all cases. Public transit is limited, and the island’s main attractions are spread across both coasts with no rideshare density outside of the resort areas.
Is Kauai good for families?
Yes — Poipu Beach Park and Lydgate Beach Park both have protected swimming areas, and mountain tubing and kayaking work well for kids old enough to swim.
What’s the best time of year to visit Kauai?
Temperatures stay warm year-round (roughly 79–86°F), so timing is more about avoiding crowds and high prices around Christmas/New Year and summer than avoiding bad weather.
Is Kauai expensive?
It can be, especially resorts in Poipu and Princeville and premium tours like helicopter flights. Budget-conscious travelers can stick to free lookouts at Waimea Canyon, hiking, and beach days, and save the big-ticket tour for one splurge.
