Surfing
Surf at Waikiki Beach by Jason K. Chun
Surfing is one of the main sports that people want to learn in Hawaii, and Waikiki Beach and Diamond Head are great spots in Honolulu for you to try out the waves.
Snorkeling
You can head to Hanauma Bay in the Hawaii Kai area of Honolulu and rent snorkeling gear to see the marine life.
Wind Surfing and Kayaking
Kailua Beach by Jason K. Chun
According to Hawaiigaga.com, Kailua Beach, northeast of Honolulu, is one of Hawaii's best beaches, and windsurfing and ocean kayaking are some of the activities you can do here.
Hiking
You can go hiking to explore Hawaii's natural beauty at Honolulu's Manoa Falls.
Rock Climbing
According to Rockclimbinghawaii.com, Mokuleia, northwest of Honolulu, is the most developed area on the island for climbing.