Santa Monica, California

• The Santa Monica Pier is always bustling.Mike Powell/Lifesize/Getty Images
  
  Santa Monica is a bustling seaside city in the greater Los Angeles metropolitan area. The beach at Santa Monica is 3.5 miles long and offers activities such as biking, surfing and volleyball. This beach is home to the world-famous Santa Monica Pier that teens love. There, a Ferris wheel, roller-coaster, arcade, aquarium, food and beverage stands and a trapeze school are available. This beach is great for meeting other teens.
  
  

Bradenton Beach, Florida

• Bradenton Beach is a great place for teenagers to hang out.Jupiterimages/Comstock/Getty Images
  
  Bradenton Beach is a white-sand beach on the Gulf Coast of Florida. Local teens go to this beach to sunbathe, swim, have picnics with friends, ride bikes along the bike path and go snorkeling. Free parking is available for teens with cars, and a free shuttle bus for teens without a car or license. Ice cream shops and convenience stores are nearby, where you can grab a treat to cool off.
  
  

Santa Cruz, California

• The Boardwalk at Santa Cruz Main Beach is great in the summer.Jupiterimages/Creatas/Getty Images
  
  This beach in northern California is a favorite for teens because of the world-famous boardwalk. The Santa Cruz Beach Boardwalk is half a mile in length, and runs parallel to the main beach area. Admission is free unless you want to go on the amusement park rides which require ticket purchases. You can also play mini-golf, hit the arcade and chow down on ice cream. The best time to come here is from Memorial Day through Labor Day.
  
  

Myrtle Beach, South Carolina

• Myrtle Beach is popular with locals and visitors.Jupiterimages/Photos.com/Getty Images
  
  Myrtle Beach in South Carolina is always buzzing with activity. Local teens love to hang out here while cruising up and down the main drag. There are also lots of teens from out-of-town who visit this beach because of the many high school competitions in the region. At the center of Myrtle Beach is the 1.2-mile-long Boardwalk, which has many places to eat and loiter while soaking up the sun and staring at the water.
  
  

South Beach, Florida

• South Beach is always buzzing with energy.George Doyle/Stockbyte/Getty Images
  
  Located on the coast of the Atlantic Ocean, South Beach is world-famous for having beautiful weather and beautiful people. There are areas where you can sunbathe, walk, bike or Rollerblade as you check out the beach babes. South Beach is within walking distance of all the shops and restaurants in downtown Miami. Best of all, the water is warm enough to swim almost year-round, so you can body surf to your heart's content.