The Packing Philosophy
Hawaii is one of the easiest destinations to pack for because the weather is consistent and the dress code is relaxed. Temperatures stay between 75-88°F year-round, the vibe is casual everywhere (even at nice restaurants), and you’ll spend most of your time in swimwear and sandals. The biggest mistake people make is overpacking — you don’t need as much as you think.
Here’s what actually matters, based on multiple trips across all four major islands.
The Essentials
Swimwear
Pack 2-3 swimsuits. You’ll be in the water almost every day, and nothing is worse than pulling on a still-damp swimsuit in the morning. Quick-dry board shorts double as regular shorts for most activities.
Reef-Safe Sunscreen
Hawaii law bans sunscreens containing oxybenzone and octinoxate because they damage coral reefs. You need reef-safe (mineral) sunscreen with zinc oxide or titanium dioxide. Brands like Sun Bum Mineral, Raw Elements, and Thinksport are widely available. Bring at least two bottles — you’ll go through sunscreen fast.
You can buy reef-safe sunscreen in Hawaii at ABC Stores, Longs Drugs, and Walmart, but prices are 20-30% higher on-island. Buy before you go. Budget $10-15 per bottle on the mainland versus $14-20 in Hawaii.
Rash Guard or Swim Shirt
The tropical sun is no joke — SPF 50 sunscreen wears off in the water, and the UV index in Hawaii regularly hits 11-12 (extreme). A UPF 50+ rash guard provides reliable sun protection without reapplication and is essential for snorkeling days when you’re face-down in the water for hours. A good one runs $20-35 on Amazon and will last years.
Comfortable Walking Shoes
You need one pair of proper shoes for hiking. Diamond Head, Koko Head, the Pipiwai Trail, and trails in Volcanoes National Park require shoes with grip — not sandals. Trail runners or lightweight hiking shoes are ideal. Waterproof is a plus if you’re hiking in Kauai or the Hilo side of the Big Island where trails get muddy.
Sandals / Flip-Flops
Your primary footwear. Locals call them “slippers” or “slippahs.” Reef, OluKai, or any comfortable flip-flop with arch support will cover 80% of your Hawaii shoe needs. Bring a pair you don’t mind getting wet and sandy.
Light Rain Jacket or Windbreaker
Hawaii gets brief tropical rain showers, especially on the windward (east/north) sides of the islands. A packable rain jacket takes up almost no space and keeps you dry during a passing shower or on a boat tour. Essential for Kauai and the Hilo side of the Big Island.
Daypack
A small backpack (20-30L) for hiking, beach supplies, and day trips. Waterproof or water-resistant is ideal for beach days and boat tours. This is where you’ll carry your sunscreen, water, snacks, and towel.
Snorkel Gear — Buy or Rent?
Buy your own mask and snorkel. A quality set costs $30-50 at Costco or Amazon and pays for itself in one trip. Rental gear runs $10-25/day and is often scratched, ill-fitting, and questionable in the hygiene department. Having your own mask that fits your face perfectly makes a huge difference in comfort and visibility.
Rent fins if needed. Fins are bulky to pack. If you snorkel frequently, it’s worth buying a pair of travel fins that fit in your suitcase ($30-50). Otherwise, rent fins on-island for $5-10/day when you need them. Most good snorkel spots are accessible without fins.
Clothing — Keep It Simple
Hawaii is casual. Even the nicest restaurants in Maui and Waikiki are “resort casual” — a clean shirt and shorts is fine almost everywhere. Here’s a 7-day clothing list:
- 3-4 t-shirts or casual shirts (moisture-wicking fabrics dry faster)
- 2-3 pairs of shorts (quick-dry are best — they double as swim trunks)
- 1 light long-sleeve shirt (for sun protection on boat tours and evenings)
- 1 pair of long pants or jeans (for Haleakala sunrise, Mauna Kea, or a nicer dinner)
- 1 light hoodie or sweater (Haleakala summit is 30-40°F at sunrise; Mauna Kea visitor center gets cold at night)
- 7 pairs of underwear and socks
- 1 swimsuit coverup or sarong (optional, for walking from pool/beach to restaurant)
That’s it. Laundry is easy to find in Hawaii — most vacation rentals have washers, and laundromats charge $3-5 per load. Pack light and wash mid-trip if needed.
Electronics
- Waterproof phone case or pouch: $10-15 and essential for beach days and boat tours. Nothing ruins a Hawaii trip faster than dropping your phone in the ocean.
- Portable battery pack: Long beach and hiking days drain your phone. A 10,000mAh battery ($20-30) gives you 2-3 full charges.
- GoPro or waterproof camera: If you want underwater photos. Phone cameras in waterproof pouches work too, but a GoPro produces significantly better underwater footage.
- Car phone mount: Essential for navigation on the Road to Hana and other scenic drives. A $10 mount saves you from fumbling with your phone while driving narrow coastal roads.
What NOT to Pack
Formal clothes: You won’t need them. A collared shirt is the dressiest you’ll ever need to be.
Jeans (more than one pair): Heavy, slow to dry, and too warm for daytime. One pair max for cool evenings.
Bulky towels: Hotels and vacation rentals provide towels. If you want a beach towel, buy a cheap one at Walmart or ABC Store for $8-12 on-island.
Expensive jewelry: Leave it at home. You’ll be in the ocean, on the beach, and hiking — it’s just something to worry about losing.
An umbrella: Rain showers are brief and warm. A light rain jacket is more practical and packable.
Too many shoes: Sandals, one pair of hiking/walking shoes, and maybe one pair of casual sneakers. That’s the max.
What to Buy in Hawaii
Some things are better purchased on-island:
- Beach chairs and boogie boards: ABC Stores sell cheap beach chairs ($15-25) and boogie boards ($15-30). Not worth the luggage space to bring from home.
- Aloe vera gel: In case of sunburn. $5-8 at any store.
- Macadamia nuts and Kona coffee: Buy these as gifts and souvenirs. Costco has the best prices — a large bag of chocolate-covered macadamia nuts is $12-15 versus $20+ at tourist shops.
- Reusable water bottle: Hawaii’s tap water is excellent. Bring a refillable bottle and skip buying plastic water bottles at $3-4 each.
The Packing Checklist Summary
Carry-on bag: Electronics, medications, swimsuit, change of clothes (in case checked luggage is delayed), snorkel mask, and valuables.
Checked bag: Everything else. Aim for one checked bag per person. Southwest gives you two free checked bags — take advantage if you’re flying with them.
The goal is to arrive in Hawaii with everything you need and nothing you don’t. Every extra item is weight you’re hauling through airports, rental car counters, and hotel lobbies. Pack light, buy cheap stuff on-island if needed, and spend your energy on the beach instead of managing luggage.