Update at 4:18 p.m. Nov. 12, 2026: National Weather Service forecasters in Honolulu report that advisory level surf now impacting northern and western shorelines of Kaua‘i and Ni‘ihau is expected to decline tonight as a large northwest swell slowly subsides, but likely won’t fall below advisory thresholds until early Friday.
Therefore, a high surf advisory previously issued until 6 p.m. today for those shorelines was extended through 6 a.m. Friday, with surf of 12 to 16 feet forecast to continue along north-facing shores and 9 to 12 feet along west-facing shores until the swell diminishes.
Story originally published 3:42 p.m. Nov. 10, 2026: A high surf advisory will be in effect from 6 a.m. Wednesday through 6 p.m. Thursday for north and west shorelines of Kaua‘i and Ni‘ihau.
National Weather Service forecasters in Honolulu report surf heights will build through Wednesday, peak Wednesday night and maintain advisory level heights Thursday.
Surf of 15 to 20 feet along north-facing shores, peaking at 18 to 24 feet, as well as 10 to 15 feet along west-facing shores, peaking at 14 to 18 feet, are forecast Wednesday and Thursday.
Moderate impacts are expected, with strong breaking waves and strong currents making swimming and other ocean recreation activities dangerous in waters along the advised shorelines.
The public should heed all advice from ocean safety officials; when in doubt, don’t go out.
