July 21, 2018 Surf Forecast
Photo: James Grenz
Swell Summary
Outlook through Saturday July 28: Forerunners from a new long period south swell are expected to begin filling in late this afternoon with the swell peaking on Sunday. A High Surf Advisory is now in effect from tonight through Monday for all south facing shores. This swell will fade during the first half of next week. No other significant swells are expected for 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.
North East
am 
pm 
Surf: Waist to stomach high ESE wind swell with occasional chest high sets.
Conditions: Light sideshore texture in the morning with SSE winds 5-10mph. Semi choppy conditions for the afternoon with the winds shifting ESE 10-15mph.
North West
am 
pm 
Surf: Ankle to knee high SSW ground swell for the morning going more during the day.
Conditions: Clean in the early morning with SSE winds less than 5mph. Sideshore texture/chop conditions move in during the morning hours with the winds shifting SW 5-10mph.
West
am pm 
Surf: Waist to stomach high S long period swell for the morning with occasional chest high sets. The swell builds in the afternoon with sets up to shoulder high.
Conditions: Semi glassy in the morning with SSE winds less than 5mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting SW 5-10mph.
South East
am 
pm
Surf: Stomach to shoulder high S extra long period swell.
Conditions: Light sideshore texture with NNE winds 5-10mph.
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 NOAA.gov and SwellInfo.com
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