Cape Kumukahi Light, Maritime beacon at Cape Kumukahi, easternmost point of Hawaii, United States.

Cape Kumukahi Light is a steel tower on a concrete base at the easternmost point of Hawaii, near Kapoho. Its DCB-224 lens, made by Carlisle & Finch, has a nominal range of 24 nautical miles and shows a white flash every 15 seconds at a focal height of 48 metres.

Requests for a light at Hawaii's easternmost cape began in 1905, but only in 1928 was a 32-foot wooden tower with an automatic acetylene beacon erected. The 1933-1934 station added two wooden keeper's houses and a steel tower on two stacked concrete blocks separated by a layer of sand, meant to insulate it from the area's minor earthquakes. Joe Pestrella kept the light from 1938 until its automation after the 1960 Kilauea eruption.

The cape marks the easternmost point of the Hawaiian island chain, and its name is shared with the light station that has guided landfall there since 1928. The surrounding land was reshaped by the 1960 Kilauea eruption, which buried the town of Kapoho and left the tower standing.

The site is accessible by a local road and provides views of the surrounding volcanic coastline and ocean. Visitors should prepare for strong winds and intense sun exposure at this exposed headland location.

During the 1960 Kilauea eruption, approaching lava streams split and flowed around the tower, leaving it completely undamaged. This remarkable survival remains memorable in local history.