Travel tips · Kauaʻi · United States
Kauaʻi travel tips: what to know before you go
The etiquette, money and practical details that make the first day easier.
Updated By the AMZBooking editorial team
Photo: The original uploader was Ulfl at German Wikipedia ., Public domain
Quick answer
Kauaʻi was the only Hawaiian island that never fell to Kamehameha I by conquest; it joined his kingdom by agreement in 1810. The island keeps a rural, small-town identity shaped by Hawaiian culture and the plantation communities of Japanese, Filipino, Portuguese and Chinese workers. Residents value the island's slower pace, and respect for the land (mālama ʻāina) is a strong local ethic.
Key facts
- Language
- English and Hawaiian
- Currency
- USD
- Plugs
- Type A and B sockets, 120 V, 60 Hz
- Tap water
- Tap water is safe to drink; stream water on trails is not, because of the risk…
- Emergency
- 911 (police, fire, ambulance)
Plan a trip to Kauaʻi
Compare flights, places to stay and rental cars, then book with the provider you choose.
Things to know
- Stay at least 3 metres from sea turtles and at least 15 metres from Hawaiian monk seals, following federal wildlife guidance.
- Respect closed trails, private property and signs at sacred sites such as heiau.
- Use reef-safe sunscreen and do not stand on coral.
- On one-lane bridges on the North Shore, cars cross in groups of about five to seven, alternating directions; follow the locals' lead.
- Do not stack rocks or take lava rocks and sand as souvenirs.
- Book Nā Pali Coast ahead: Boat and helicopter tours fill up in peak seasons; book a week or more ahead.
- Book Waimea Canyon State Park ahead: Non-residents pay entry and parking fees at state park lookouts; check the state parks website.
- Book Hāʻena State Park and Kēʻē Beach ahead: Non-residents need an advance reservation for entry and parking or the shuttle, which often sells out weeks ahead.
- Choose a condo with a kitchen and shop at supermarkets and farmers markets.
Tipping
Tipping follows US norms: about 18–20% in restaurants, a few dollars per drink at bars, and tips for boat crews, tour guides and hotel staff.
Language
| Phrase | Meaning |
|---|---|
| Aloha | Hello, goodbye, love |
| Mahalo | Thank you |
| Mālama ʻāina | Care for the land |
| Pau hana | After work; happy hour |
| Makai / mauka | Towards the sea / towards the mountain |
What to wear
Casual, beachy clothes are worn everywhere. Bring a rain jacket, sturdy shoes for muddy trails and a warm layer for Kōkeʻe, which is much cooler than the coast.
Practical details
- Plugs and voltage
- Type A and B sockets, 120 V, 60 Hz
- Drinking water
- Tap water is safe to drink; stream water on trails is not, because of the risk of leptospirosis.
- Emergency number
- 911 (police, fire, ambulance)
- Phone and internet
- Mobile coverage is good in towns, but patchy on the North Shore beyond Hanalei, at Kōkeʻe and on trails.
- Time zone
- Pacific/Honolulu
The main risks are the ocean and the trails: strong currents and shorebreak, especially on the North Shore in winter, slippery muddy paths, and streams that rise fast in heavy rain. Swim at lifeguarded beaches, heed warning signs and do not leave valuables in parked cars.
Entry requirements
Visa and passport rules depend on your nationality and change often. Check United States's official government guidance and your own government's travel advice before booking.
Plan the trip
Questions travellers ask
+Do you tip in Kauaʻi?
Tipping follows US norms: about 18–20% in restaurants, a few dollars per drink at bars, and tips for boat crews, tour guides and hotel staff.
+Can you drink the tap water in Kauaʻi?
Tap water is safe to drink; stream water on trails is not, because of the risk of leptospirosis.
+What plugs are used in Kauaʻi?
Type A and B sockets, 120 V, 60 Hz
+What language is spoken in Kauaʻi?
English and Hawaiian.