July 18, 2018 Surf Forecast
Photo: James Grenz
Swell Summary
Outlook through Wednesday July 25: With rough, and rising, surf caused by strengthening trade winds, a High Surf Advisory has been issued for east facing shores through tonight. Surf along these shores is expected to gradually lower Thursday through this weekend as the trade winds weaken. A series of reinforcing south and southwest swells will maintain small to moderate surf along south facing shores through Friday. Slightly larger and longer period south-southwest swells may cause surf to approach the High Surf Advisory along south facing shores from Saturday into Monday.
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: Head high E medium period swell.
Conditions: Sideshore texture/chop with ESE winds 10-15mph in the morning shifting SE 15-20mph in the afternoon.
North West
am 
pm 
Surf: Ankle to knee high SW ground swell for the morning going more SSW during the day.
Conditions: Glassy in the morning with ENE winds less than 5mph. Sideshore texture/chop conditions for the afternoon with the winds shifting SW 10-15mph.
West
am 
pm 
Surf: Knee to waist high SSW ground swell in the morning builds in the afternoon with occasional sets up to shoulder high.
Conditions: Semi glassy in the morning with NNW winds less than 5mph. Bumpy/semi bumpy conditions for the afternoon with the winds shifting SSW 5-10mph.
South East
am pm 
Surf: Head high E medium period swell in the morning builds in the afternoon with occasional sets up to 1-2′ overhead high.
Conditions: Sideshore texture/chop with NE winds 5-10mph in the morning increasing to 10-15mph in the afternoon.
Image: NOAA
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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