map showing mean annual precipitation (ranging from less than 800 mm to greater than 6,000 mm) for the Island of Oahu

Parameter-elevation Regressions on Independent Slopes Model (PRISM) 1961-1990 mean annual precipitation of O‘ahu, Hawai‘i. Created by Spatial Climate Analysis Service at Oregon State University in 2000.

Source: Climate Source, Inc. 2002.