A slow-moving storm near New Zealand is generating a south-southwest swell that will bring advisory level surf to the islands through Sunday, the National Weather Service said.

The south shores of all islands are under a high surf advisory until 6 p.m. Sunday.

Surf is expected to be about 6 to 8 feet with locally higher sets along south facing shores, officials said.

The swell will build through Saturday and peak overnight and advisory level surf will persist into Sunday afternoon, forecasters said.

Beachgoers should heed all advice by Ocean Safety officials and exercise caution.