High surf advisory in effect for Kauaʻi, Niʻihau from noon Sunday to Monday evening

Updated at 4:27 p.m. at Jan. 29: The National Weather Service’s forecast now calls for waves of 18 to 22 feet along north-facing shores and 14 to 18 feet along west-facing shores of Kaua’i and Ni’ihau.

Original post: A large northwest (310 degrees) swell will build down the island chain through the evening, peak overnight and early Monday, then decline Monday night.

Wind waves from fresh to strong northeasterly winds will combine with the northwest swell to produce very rough conditions, especially on Kauaʻi and Oʻahu through tonight, the National Weather Service said.

A high surf advisory will be in effect from noon Sunday to 6 p.m. Monday.

The forecast is for large breaking waves of 12 to 16 feet along north-facing shores and waves of 8 to 12 feet for west-facing shores.

Strong breaking waves and strong currents will make swimming dangerous. Head all advice from ocean safety officials. When in doubt, don’t go out.