Ahupua‘a ‘Ō Kahana State Park is located on the windward side of O’ahu, between Kane’ohe and Laʻie, and 26 miles from Honolulu. Kahana is a relatively unspoiled valley, and one of only a few publicly owned ahupuaʻa, or ancient Hawaiian land division, in the state.
An ahupuaʻa includes lands from the mountains to the sea (mauka-makai), encompassing all of the resource zones needed for subsistence. The ahupuaʻa of Kahana encompasses almost 5,300 acres, ranging from sea level at Kahana Bay to 2,670 feet at Puʻu Pauao on the crest of the Koʻolau mountains. Kahana is one of the wettest valleys on Oʻahu. Overcast skies and showers are frequent, with an average annual rainfall of 75″ along the coast to 300″ at the back of the valley. Temperatures can range from the mid-60s to the mid-80s.