July 15, 2018 Surf Forecast

July 15, 2018, 5:00 AM HST
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Photo: James Grenz

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Swell Summary

Outlook through Sunday July 22: Fresh to locally strong trade winds will continue to produce rough and choppy surf along east facing shores for the next few days. A boost in the trades will come around Wednesday as a low pressure area passes to the south of the islands. This will cause a bump up in the surf along the east facing shores to near advisory level. A new long period southwest swell is expected to arrive this morning, peak tonight and slowly lower through Monday night. The next significant bump-up from the south is slated for Wednesday night, with a 2 foot 18 second period swell. A similar magnitude swell follows in on Friday night.
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.

North East


am        pm  


Surf: Stomach to shoulder high E wind swell.

Conditions: Sideshore texture/chop with SSE winds 10-15mph in the morning shifting SE 15-20mph in the afternoon.

North West


am        pm  

Surf: Knee high SW long period swell with occasional thigh high sets.

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.


am        pm  

Surf: Knee to waist high SW long period swell.

Conditions: Semi glassy in the morning with SSE winds less than 5mph. Semi glassy/semi bumpy conditions for the afternoon with the winds shifting W 5-10mph.

South East

am        pm  

Surf: Waist to chest high wind swell with occasional shoulder sets. The swell will be coming from the E in the morning and shift to the ESE during the day.

Conditions: Sideshore texture/chop with NE winds 5-10mph in the morning shifting ENE 10-15mph in the afternoon.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

**Click directly on the images below to make them larger. Charts include: Hawaii County projected winds, tides, swell direction & period and expected wave heights.**


Data Courtesy of and

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