Surf along Oahu's south-facing shores is on the way up and could reach 4 to 6 feet today and continue building to the 8-foot advisory level by Friday, the National Weather Service said.

Elsewhere on Oahu look for surf of 2 to 4 feet along east-facing shores, 2 feet or less along north-facing shores and 3 feet or less along west-facing shores.

A new south swell will bump the surf up to near the 8 foot advisory level Friday.