April 15, 2018 Surf ForecastApril 15, 2018, 1:00 AM HST (Updated April 15, 2018, 1:00 AM)
Outlook through Saturday April 21: The current northwest swell will quickly drop Sunday. A small north swell will gradually build Wednesday night, with a moderate northwest swell expected Thursday night, but should remain below advisory level. Strengthening trade winds will produce advisory level rough surf along east facing shores through Sunday and remain elevated into early next week. Surf along south facing shores will get a slight bump late this weekend into early next week.
Surf heights are forecast heights of the face, or front, of waves. The surf forecast is based on the significant wave height, the average height of the one third largest waves, at the locations of the largest breakers. Some waves may be more than twice as high as the significant wave height. Expect to encounter rip currents in or near any surf zone.
Surf: Chest to head high mix of NNW ground swell and E wind swell with occasional slightly overhead sets.
Conditions: Fairly clean in the early morning with S winds 5-10mph. Choppy/sideshore current conditions move in during the morning hours with the winds shifting SE 15-20mph.
Surf: Ankle to knee high ground swell.
Conditions: Clean in the early morning with SE winds less than 5mph. Semi choppy conditions move in during the morning hours with the winds shifting WSW 5-10mph.
Surf: Knee high NW ground swell for the morning with occasional thigh sets. This builds a bit during the afternoon.
Conditions: Glassy in the morning with S winds less than 5mph. Semi glassy/semi bumpy conditions for the afternoon with the winds shifting WSW 5-10mph.
Surf: Chest to shoulder high E wind swell in the morning builds to chest to head high for the afternoon.
Conditions: Sideshore texture/chop with NE winds 5-10mph in the morning shifting ENE 10-15mph in the afternoon.
**Click directly on the images below to make them larger. Charts include: Hawaii County projected winds, tides, swell direction & period and expected wave heights.**