For a Caribbean holiday in 2026, the mantra is "Tropical Breathable." During the day, you should prioritize lightweight, natural fabrics like linen, cotton, and bamboo to manage the high humidity. Men typically wear linen shirts or high-quality moisture-wicking polos paired with tailored shorts, while women favor flowy sundresses, kaftans, and sarongs as versatile cover-ups. Footwear should include a pair of sturdy sandals for walking and flip-flops for the beach. For the evening, most resorts follow a "Resort Casual" dress code—think "smart" shorts or chinos for men and maxi dresses or jumpsuits for women. If you are on a cruise, remember to pack a few formal outfits for "Gala" nights. Crucially, don't forget a wide-brimmed hat and UV-protection sunglasses. Avoid heavy denim or synthetic fabrics that don't breathe, as the Caribbean heat can be unforgiving if your clothing traps moisture against your skin.