12. The Caribbean
Not all of the Caribbean belong to the United States, but some of the are part of it and if because of the nice weather conditions the Caribbean found its place on our list. For those who are not fans of the cold weather and snow, they should definitely put the Caribbean as one of their must-visit places. The Caribbean is offering you to enjoy in one of their long sand beaches while the temperature here averages around 81 degrees Fahrenheit, in most of the islands in May. You can fly from Los Angeles to San Juan for about $390 in May.