Oahu, also known as The Gathering Place, is the third-largest of the Hawaiian Islands, measuring about 596 square miles (1,545 square kilometers). It is the most visited island in Hawaii, welcoming over 4 million visitors every year. The wonderful weather, stunning landscape, and the multitude of activities that can take place here make Oahu a must-see for tourists of all ages and interests.
Oahu has over 40 sites to offer divers of all levels of experience that come here to explore its waters. Reefs, an abundance of species and fish, and impressive wrecks all await divers in this idyllic destination.
Diving with the turtles in Oahu. Photo by Ian Kennedy
The south shore of Oahu is diveable all year round, but the northern and western shores are often not accessible during the winter months because of the high surf.
The water temperatures in Oahu range from 75° F/24° C in January to up to 81° F/27° C in August and September.
It depends on where you plan on diving because it is highly possible to experience strong and unpredictable currents on many dive sites in Oahu.
About 25 percent of the species of fish inhabiting the waters of the Hawaiian Islands are endemic. About 680 species of fish, 18 different species of toothed dolphins, and 8 species of baleen whales can be found in the Hawaii region. Consequently, diving in Oahu offers an amazing experience for those interested in sharing the water with sea creatures of all shapes, color, and sizes.
Some of the species of animals divers can spot here include the spinner dolphin, monk seals, manta rays, bandit angelfish, longnose butterflyfish, raccoon butterflyfish, bluestripe snappers, tangs, Moorish idols, yellowfin goatfish, parrotfish, and Hawaii’s state fish - the humuhumunukunukuapuaa.
Wreck diving in Oahu. Photo by Ian Kennedy
There are over 10 accessible wrecks around the island of Oahu, teeming with all kinds of sea life. They’re usually the best places to spot the Hawaiian stingray, white-tip reef sharks, and pelagic fish. Many of the wrecks offer swim-throughs, and advanced divers can penetrate the ships or planes.