Do you know why the sun and the beach create a combination guaranteed to cause sunburn? You definitely need to know if you intend to visit the 50th state. Sand and sun are a perfect couple, and you know what happens when you get between a perfect couple! And there’s plenty of opportunity on Hawaii’s many stunning beaches. You get an extra dose of UV rays on a sunny beach than elsewhere because sand reflects around 25% of the sun’s rays, making their effects more powerful.