You don't need much in Maui
Luggage and bags: Small carryon
Clothing/Shoes/Weather Gear: Shorts and T-shirts and a sundress for evenings out are all that you need. Add 2 bathing suits, sandals, flipflops.
Toiletries and Medical Supplies: Must have sunscreen! You'll burn without it. Neosporin helps with coral burn and comes in individual foil packs that you can carry with you.
Camping/Beach/Outdoor Gear: Coiled strecth wrist strap for keys. Wear it in the water rather than risk someone finding your keys and breaking into your car.
Miscellaneous: I found a great printable packing list on website of the condo that we rented. It covers everything.
- Budget Travel
Clothing/Shoes/Weather Gear: During the summer, Lahaina is pretty warm. Shorts, short sleeve shirt and sandals will do. From Dec.-Apr., the days are warm, but the evenings can get chilly (for Hawaiian standards around 70 F). So, a light jacket may not be a bad idea.
Camping/Beach/Outdoor Gear: Swimsuit.