Surfing- Rincon is known as the capital of Caribbean surfing and from November to April, waves can usually be found at one of it's famous beaches. Check out Paddle Diva for Standup Padleboard Lessons, Rentals and Tours.
Sailing- There are a number of local businesses that offer sailing excursions, sunset cruises and even classes to learn how to sail.
Snorkeling- Tres Palmas Marine Reserve is the only marine reserve on Puerto Rico and has amazing, easily accesible snorkeling with elk-horn coral and tropical fish just steps into the water.
Diving- Nearby Desecheo Island is a diver's dream and local dive shop Taino Divers has daily trips there for either beginners and more experienced divers.
Fishing- Deep-sea fishing is popular in Rincon, with many local outfits that will take you to Dorado, Billfish and Yellow Tail catches.
Whale Watching- From January to March Rincon is a popular whale watching area. Whales come through the Mona Pasage and the Rincon lighthouse is a great place to watch.
Horseback Riding- Pintos R Us offer guided beach horseback rides, beautiful sunset tours through Rincon's most amazing beaches.