The National Weather Service in Honolulu has extended a high surf advisory for portions of Kaua‘i and Ni‘ihau.
The advisory will remain in effect through 6 p.m. today.
Surf heights along north-facing shores of both islands are expected to range from 18-24 feet today. Surf heights along west-facing shores of Ni‘ihau and Kaua‘i are expected to range from 12-16 feet.
The NWS says to expect strong breaking waves, shore break and strong longshore and rip currents, which will make swimming difficult and dangerous.
Beachgoers, swimmers and surfers should heed all advice given by ocean safety officials and exercise caution.