On Kauai, roosters wander the parking lots, and the morning light slides down green cliffs that look like folded velvet. Rain showers drift across a taro field, and a rainbow appears over the water as if on cue. This is the quietest and most rugged of the main Hawaiian islands, a place for hikers, beach walkers and anyone who would rather watch a waterfall than a nightclub.
Where is Kauai and what is it like?
Kauai is the northernmost of the main Hawaiian islands, a round green island northwest of Oahu, with Lihue on the east side as its main town and the Napali cliffs closing off the northwest corner. It feels slower and more rural than its neighbors, with few high-rises, one main highway that does not quite circle the island, and chickens everywhere.
Each side has its own character. The north shore, around Princeville and Hanalei, is lush and wet, with mountains that drop straight into bays. The south, around Poipu, is sunnier and drier. The west is red earth and canyon country, ending where roads run out at the dunes of Polihale.
Hikers, beach lovers and families who like a relaxed pace tend to fall for it. Travelers who want shopping streets, late nights and a long list of restaurants will find Kauai small, and rain can reshape a day on the wet side.
What is there to do in Kauai?
Kauai’s draw is scenery you can walk into: sea cliffs, a canyon, river valleys and beaches with no hotel towers behind them. Where Maui and Oahu lean on resorts and nightlife, Kauai leans on trails, viewpoints and open water.
Napali Coast and Haena
The Napali Coast is the island’s best-known landscape, a wall of fluted green cliffs and hidden valleys that you see from a boat, from the air or on foot. On the north shore, Haena State Park holds the start of the Kalalau Trail, which runs 11 miles along the coast. Most day hikers walk the first stretch toward Hanakapiai Valley, 2 miles in.
Going farther than Hanakapiai takes a camping permit for Napali Coast State Wilderness Park, available 90 days ahead. Visitors from outside Hawaii also need a day-use reservation for Haena itself, released 30 days ahead, so plan this stop early. The trail is muddy and slippery after rain, so wear shoes with grip.
Waimea Canyon and Kokee
Waimea Canyon is about 10 miles long and roughly 3,600 feet deep, a red, orange and green gash often called the Grand Canyon of the Pacific. You drive up the west side and stop at lookouts as the colors change with the light. Higher up, Kokee State Park has cool forest air and the Kalalau Lookout, at 4,000 feet, over Kalalau Valley.
Kokee has seven named trails, from the Alakai Swamp to Awaawapuhi and Nualolo Cliffs. Clouds can fill the valley in minutes, so go early when the view is clearest. It is much cooler up here than at the beach, and a jacket helps.
Hanalei and the north shore
Hanalei is a small town facing a wide bay, with a historic pier, taro fields and a river that runs about 16 miles down from Mount Waialeale. It was named an American Heritage River, one of just 14 in the country. You spend your day on the sand at Black Pot Beach Park, paddling, or strolling the pier and the shops.
Nearby, the Hanalei National Wildlife Refuge protects wetland birds, and its overlook along Kuhio Highway in Princeville gives a view across the valley. In winter, surf on north-facing beaches can be big, so read the posted warnings and the day’s surf and currents before you go in, and swim near a lifeguard only where one is on duty.
Wailua, waterfalls and Poipu wildlife
On the east side, Wailua River State Park centers on the river, where a boat cruise goes to the Fern Grotto, a fern-covered cave in a tropical garden (the cruise carries a fee). Wailua Falls, with a sheer drop of 200 feet, is an easy roadside stop for photos.
On the sunnier south shore around Poipu, sea turtles and Hawaiian monk seals come ashore to rest. Seals are endangered, and visitors should stay at least 50 feet away from them and at least 10 feet from turtles. A seal sleeping on the sand is a sight worth a long look from a respectful distance.
| Site | Admission |
|---|---|
| Waimea Canyon State Park (non-Hawaii residents) | $5 per person (age 3 and under free), plus $10 per vehicle for parking |
| Haena State Park (non-Hawaii residents) | $5 per person Park Entry Reservation or $10 per vehicle Parking Reservation |
How many days do you need in Kauai?
A week is the comfortable answer, since the island is small on a map but roads are slow and the sights sit on opposite sides. A long weekend covers a single base well, say the north shore with Hanalei and the Haena trail, or Poipu with a half day up to the canyon.
With a full week you can slow down and split the island: Waimea Canyon and Kokee on one day, the Napali Coast by boat or on foot on another, then beach days, a waterfall stop at Wailua and a wander through Hanalei. With extra time, add the dunes and long beach of Polihale, a rougher outing, and a second base on the other side of the island.
The road to Polihale is five miles of unpaved dirt that may flood during rains, and four-wheel drive is recommended. It is a sunset place, wide and open, for travelers who like a bit of adventure.
Where to stay in Kauai
The north shore around Princeville and Hanalei suits travelers who want green mountains outside the window and the island’s most dramatic beaches nearby, with the trade-off of more rain. Poipu on the south side is the classic beach-resort choice, sunnier and drier, with calm stretches of sand, snorkeling and the chance to see turtles and monk seals.
The east side, from Lihue up through Wailua and Kapaa, is central and practical, close to the airport, to waterfalls and to everyday restaurants. The west is quiet and mostly small, a base for the canyon, and Kokee has campsites for those who like the cool upland air.
How do you get to Kauai and get around?
You arrive at Lihue Airport, the island’s main gateway, with flights from the mainland and other islands. It is a small-hub airport, so arrivals are relaxed and the island starts almost as soon as you step outside.
Most visitors drive, because the sights are spread along a single main road and a short hop between coasts can still take time. The highway does not circle the island, which is why the north shore and the west feel like separate worlds. Allow for slow traffic and one-lane stretches near Hanalei, and note that in rain some roads and trails can change quickly.
When is the best time to visit Kauai?
May through October is the sunniest stretch, with warm days, mostly dry skies on the east and south, and a north shore sea that tends to be gentler in summer. April and May are good shoulder months, and September and October are still warm and fairly quiet. Rain days run at a handful per month through the year, rising a little in November and December.
November to April is the wetter, cooler half. Showers can be heavy on the north shore and up at the canyon rim, where Kokee is cool and often cloudy, and winter surf can be big on north-facing beaches. Many travelers still come then for the whales, the lush waterfalls and the green hills.
The crowded weeks are summer family vacations and the winter holidays, when rooms and rental cars fill up early. The Central Pacific hurricane season runs from June 1 to November 30.
In September 2026, Hurricane Lowell passed just west of Kauai with damaging winds, heavy rain and high surf, and it damaged roads, trails and parks across the island. For the current state of any park, the Hawaii Division of State Parks posts its Important Park Notices page, and a reservation for a day when a park is closed is refunded.
Good to know before you go
Kauai is part of the United States, so there is no passport or visa to think about and no currency to change. Treat the ocean with respect, read the posted warnings and the day’s surf and currents before you go in, swim near a lifeguard where one is on duty, and keep off the reef. Much of the land is sacred to Native Hawaiians, so stay on marked trails and leave stones and temples as you find them. Lodging bills carry taxes on top of the nightly rate.
| Fee | Amount | Who pays |
|---|---|---|
| State Transient Accommodations Tax | 11.00% | Guests of hotels and vacation rentals |
| Kauai County Transient Accommodations Tax | 3% | Guests of hotels and vacation rentals |
| General Excise Tax passed on to customers (maximum) | 4.7120% | Customers of Kauai businesses |
Sources
- Hawaii Department of Taxation, Tax Announcement No. 2025-03 (Transient Accommodations Tax Law Changes from 2025 Legislative Session), files.hawaii.gov/tax/news/announce/ann25-03.pdf, checked September 24, 2026
- County of Kauai, Department of Finance, Transient Accommodations Tax page, kauai.gov/Government/Departments-Agencies/Finance/Transient-Accommodations-Tax, checked September 25, 2026
- Hawaii Department of Taxation, County Surcharge on General Excise and Use Tax page, tax.hawaii.gov/geninfo/countysurcharge/, checked September 25, 2026
- Federal Aviation Administration, CY2024 Commercial Service Enplanements (xlsx), faa.gov/airports/planning_capacity/passenger_allcargo_stats/passenger/arp-cy2024-commercial-service-enplanements.xlsx, checked September 24, 2026
- NASA Earth Observatory, "Waimea Canyon, Kauai", science.nasa.gov/earth/earth-observatory/waimea-canyon-kauai-4067, read September 25, 2026
- DLNR Division of State Parks, "Waimea Canyon State Park", dlnr.hawaii.gov/dsp/parks/kauai/waimea-canyon-state-park/, read September 25, 2026
- DLNR Division of State Parks, "Kokee State Park", dlnr.hawaii.gov/dsp/parks/kauai/kokee-state-park/, read September 25, 2026
- DLNR Division of State Parks, "Haena State Park", dlnr.hawaii.gov/dsp/parks/kauai/haena-state-park/, read September 25, 2026
- DLNR Division of State Parks, "Napali Coast State Wilderness Park", dlnr.hawaii.gov/dsp/parks/kauai/napali-coast-state-wilderness-park/, read September 25, 2026
- DLNR Division of State Parks, "Wailua River State Park", dlnr.hawaii.gov/dsp/parks/kauai/wailua-river-state-park/, read September 25, 2026
- State of Hawaii Data Book 2015, Table 5.14 "Major Named Waterfalls, By Island" (sourced to U.S. Geological Survey and Hawaii DLNR Commission on Water Resource Management records), files.hawaii.gov/dbedt/economic/databook/2015-individual/05/051415.pdf, read September 25, 2026
- DLNR Division of State Parks, "Polihale State Park", dlnr.hawaii.gov/dsp/parks/kauai/polihale-state-park/, read September 25, 2026
- County of Kauai Department of Parks and Recreation, "Black Pot Beach Park Master Plan", May 2021, kauai.gov (blackpotplan-final-may-2021.pdf), read September 25, 2026
- NOAA Fisheries, "Hawaiian Monk Seal", fisheries.noaa.gov/species/hawaiian-monk-seal, read September 25, 2026
- U.S. Fish and Wildlife Service, "Hanalei National Wildlife Refuge", fws.gov/refuge/hanalei, read September 25, 2026
- NOAA Fisheries, "Viewing Marine Wildlife in Hawaiʻi", fisheries.noaa.gov/pacific-islands/marine-life-viewing-guidelines/viewing-marine-wildlife-hawaii, read September 25, 2026
- NOAA NCEI, monthly normals 1991-2020, station USW00022536
- NOAA NCEI, monthly normals 1991-2020, station USC00518165
- NOAA NCEI, monthly normals 1991-2020, station USC00513099
- County of Kauai, press release « Hurricane Lowell Update », September 8, 2026, kauai.gov ; DLNR news release of September 16, 2026
- Hawaii DLNR Division of State Parks, dlnr.hawaii.gov/dsp (home page, avis of October 5, 2026)
- NWS Honolulu / Central Pacific Hurricane Center, « 2026 Central Pacific Hurricane Season Outlook », weather.gov/hfo/hurricaneOutlook2026, checked September 24, 2026
All our pages
When to go
- Best Time to Visit Kauai: Weather by Month, Crowds, Swimming Seasons and Events
- Kauai in January: Weather, Winter Surf, Waterfalls and What to Do
- Kauai in February: Weather, Winter Surf, Whale Season and What to Do
- Kauai in March: Weather, Whales, Beaches and What to Do
- Kauai in April: Weather, Beaches and What to Do
- Kauai in May: Weather, Swimming, Things to Do and a Two-Day Plan
- Kauai in June: Weather, Beaches, What to Do and a Two-Day Plan
- Kauai in July: Weather, Beaches and What to Do
- Kauai in August: Weather, Beaches, Things to Do and a Two-Day Plan
- Kauai in September: Weather, Beaches, Things to Do and a Two-Day Plan
- Kauai in October: Weather, Beaches, Waimea Canyon and Island Life After the Storm
- Kauai in November: Weather, Winter Surf, Beaches and What to Do
- Kauai in December: Weather, Winter Surf, Waimea Canyon and a Two-Day Plan
Things to do
- Things to Do in Kauai: Na Pali Views, Waimea Canyon, North Shore Beaches and Local Food
- Day Trips from Kauai: Waimea Canyon, Haena and the Na Pali Coast, Wailua and Polihale