Hawi (Hawaiian: Hāwī; Hawaiian pronunciation: [həˈvi]) is a census-designated place (CDP) in Hawaiʻi County, Hawaii, United States. The population was 1081 at the 2010 United States Census.
Hawi is situated to the west of the community of Kapaau. Together they comprise the most densely populated region in the district of North Kohala. Historically this part of Kohala is significant as the birthplace of Kamehameha I and the location of the Moʻokini heiau in the Kohala Historical Sites State Monument. The two communities were once busy commercial centers during the operation of the Kohala Sugar plantation.
Hawi is the turnaround point for the Ironman World Championship Triathlon. It is the northernmost point on the bicycle leg, where athletes return to the finish line at Kamakahonu in Kailua-Kona.
Hawi is located at 20°14′31″N 155°50′2″W (20.241917, -155.834013).
According to the United States Census Bureau, the CDP has a total area of 1.2 square miles (3.1 km2), all of it land. The climate of the city is tropical with temperatures staying between the 60's an 80's in all seasons.
As of the census of 2000, there were 938 people, 298 households, and 224 families residing in the CDP. The population density was 773.1 people per square mile (299.3/km²).