The National Weather Service has issued a high surf advisory for northern shores this weekend.

Surf is expected to climb to 10 to 15 feet along north- and west-facing shores of Niihau and Kauai, and northern shores of Oahu, Molokai, Maui and Hawaii island. The advisory is in effect from 6 a.m. Saturday to 6 p.m. Sunday. 

The large north-northwest swell will arrive late Friday night, peak Saturday night, and gradually subside Sunday, forecasters said Friday afternoon.

Beachgoers are warned of possible strong breaking waves, shore breaks, and rip currents that will make swimming dangerous. 

“Anyone entering the water could face significant injury or death,” the advisory said. “Boaters should be aware of an increased number of surfers and body boarders utilizing the harbor channel to access surfing areas.”