If you get cold on flights like I do, you can wear leggings and a t-shirt on your plane to Hawaii. If you’re bringing a rain jacket or packable puffer, keep it in your carry-on for an extra layer.
Hawaii weather is gorgeous year-round ... for holding everything you might need on a boating excursion. Be sure to wear sunscreen! This sunscreen is 50 SPF and coral safe, as well as biodegradable.