Trip readiness checklist for Hawaii
Hawaii runs on aloha and respect — for the ocean, the culture, and the wildlife. Here's the trip-readiness checklist for Hawaii: what to pack, when to go, entry rules for your passport, and the official sources to confirm before you fly.
Build my checklistWhat to pack
Hawaii is sunscreen law, sudden rainbows, and one bag doing beach-to-trail double duty. Pack reef-safe or buy reef-safe there — the other kind is illegal to sell in the islands.
Reef-safe sunscreen
Hawaii banned the sale of sunscreens with oxybenzone and octinoxate to protect the reefs. Mineral (zinc/titanium) formulas are the safe bet — for coral and for checked-bag customs of conscience.
A rash guard and water shoes
Snorkeling, surfing lessons, and lava-rock entries are all easier with skin and soles protected.
A light rain layer
Windward showers arrive fast and leave faster — that's where the rainbows come from.
Trail shoes if you hike
Muddy ridge trails and lava fields are genuinely rough; flip-flops ('slippahs') are for everywhere else.
When to go
Mid-December through March is peak (whales included — they take winter here too), and June–August brings summer families. April–May and September–November are the shoulder gems: same beaches, calmer everything, better prices.
Money & getting around
US dollars, US cards, US tipping (15–20%) — plus island prices: expect groceries and gas noticeably above mainland rates. Book rental cars early (especially Maui); some parks and beaches now require advance reservations (Diamond Head, Hanauma Bay, Haleakalā sunrise) — check before you drive out.
Local quirks worth knowing
Hawaii runs on aloha and respect — for the ocean, the culture, and the wildlife. A few rules are written into law; the rest are written into how you'll be treated.
Keep your distance from sea life — it's the law
Sea turtles (honu), monk seals, and dolphins are federally protected: no touching, no crowding, no matter how calm they seem. Fines are real.
Don't take lava rocks or sand
It's prohibited in the parks and considered disrespectful everywhere (legend says Pele takes it personally). Take photos; leave the islands where they live.
Drive with aloha
Nobody honks, everybody lets you merge, and a shaka (thumb-and-pinky wave) says thanks. Being visibly in a hurry marks you faster than the rental plates.
Respect sacred sites
Heiau (temple ruins), certain valleys, and marked cultural sites deserve quiet and distance — read the signs, mind the kapu markers, and don't stack rocks.
A week in Hawaii, the list starts here
Quantities scale with your dates, the weather groups arrive once we have your travel days, and your own plans add their gear on Trip Pass.
- Passport & travel documents1
- Phone charger & adapter1
- Wallet, cards & some local cash1
- Toiletries bag1
- Any daily medicationsenough for the trip
- Underwear7
- Socks7
- T-shirts / tops5
What am I forgetting?
A real answer from Trip Happens for a sample week in Hawaii, departing in five weeks with a checked bag and nothing packed yet. Yours is built from your own trip.
Five weeks to Honolulu. Here's what tends to get missed.
- 1.
Reef-safe sunscreen
Hawaii bans the sale of non-reef-safe sunscreen, so the tube in your bathroom cabinet may not be legal there. Buy reef-safe before you fly or plan to pick it up on the island.
- 2.
Advance park reservations
Diamond Head and Hanauma Bay near Honolulu now need reservations booked ahead, and a week is easy to fill with turned-away mornings. Check the official booking sites before you lock in your days.
- 3.
One bag, beach to trail
Seven nights in October means swimming, hiking and sudden rain in the same afternoon, and nothing is packed yet. Pick shoes and a daypack that handle sand and a wet trail, not just one of them.
Entry, advisories & health
These change. Confirm at the official source before you book.
Hawaii is a US state: US citizens fly domestic (REAL ID-compliant license or passport required at TSA). International visitors need the same visa or ESTA as any US entry. One extra step for everyone: an agriculture declaration form on arrival — Hawaii protects its ecosystem seriously.
No travel advisory applies to domestic Hawaii travel. The real things to monitor are natural: surf and weather warnings from the National Weather Service, and volcanic activity from the USGS Hawaiian Volcano Observatory.
No special vaccinations for Hawaii — it's the US. The health notes that matter are environmental: intense UV, dehydration on hikes, and freshwater streams can carry leptospirosis (don't swim with open cuts). US healthcare prices apply; visitors from abroad want insurance.
Get the full Hawaii checklist
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