There are a number of good spots across the United States where scuba divers can dive in wintertime. Most involve using a dry suit, something many open water divers are not certified for. Dry suit diving can be uncomfortable and expensive by the time you buy all the gear needed and take the course. You can dive in a variety of places in the United States with only a six mil wetsuit.  The Florida Keys is destination number on for scuba divers who wish to stay in the U.S.  Besides the Florida Keys there are numerous freshwater springs in Florida, Texas and other states where the winter and summer water temperature are the same. Here are some of the very best winter scuba diving locations in the country. See Winter Scuba Places