Things to do at the beach and in the water.
Snorkeling
Okinawa's coral reefs around Miyako Island and Kerama Islands offer world-class snorkeling with visibility over 20 meters and abundant tropical fish and sea turtles. Gear rental is available at most Okinawan beach resorts.
Best at: Kerama Islands near Naha, Miyako Island, Iriomote Island
Surfing
Japan has a dedicated surf culture centered on the Shonan coast near Tokyo, Chiba's eastern coast, and the Izu Islands. Surfboard rental and lessons are available at most surf beaches from April through November.
Best at: Katase-Enoshima (Kanagawa), Chiba beaches, Niijima Island
Sea Kayaking
Kayaking through Okinawa's mangrove-lined estuaries on Iriomote Island combines wildlife spotting with water adventure. Guided tours navigate to secluded beaches inaccessible by foot, taking 2-4 hours.
Best at: Iriomote Island, Miyako Island lagoons
Beach BBQ
Summer beach barbecue is a beloved Japanese tradition. Many beaches in the Shonan area and near Tokyo offer BBQ equipment rental and prepared grills with charcoal for self-organized beach parties.
Best at: Yuigahama (Kamakura), Zushi Beach (Kanagawa)