Swell Matrix

Area Forecast Discussion

National Weather Service Honolulu Hi

833 pm hst Fri Jun 19 2026

Synopsis

Light to moderate east-southeasterly winds will persist through Saturday before taking on a slight northeasterly component on Sunday. This lighter flow will allow for a daily sea and land breeze cycle that will bring clouds and a few showers to leeward and interior areas each afternoon and clearing overnight. Monday through midweek, trade winds will strengthen to moderate to breezy levels, bringing a return to more consistent windward showers.

Aviation

Issued at 315 PM HST Fri Jun 19 2026 A rather stable, gentle to moderate easterly trade wind flow will prevail through the weekend. MVFR ceilings will periodically develop along windward slopes, while afternoon sea breezes produce higher ceilings and isolated SHRA over terrain. VFR should dominate at the terminals, and no AIRMETs are in effect.

Marine

Light to moderate trades will hold for the next couple of days as a weak surface ridge remains northeast of the area and front passes north. Trade winds will begin to increase Monday and trend upward through next week as the front dissipates and the ridge strengthens north of island chain.

A small, medium period south swell will continue to steadily fade into Saturday, allowing surf along south and west-facing shores to drop a notch. A series of small, medium to long period south and southeast swells will fill in Saturday into the first half of next week, which will boost surf heights back near seasonal averages through next week.

Tiny surf will prevail along north-facing shores through most of the coming week as only some limited short-period energy reaches the islands from the north and northwest. Trade winds remain lighter than normal through the weekend, keeping surf along east- facing shores below average. East shore surf will begin to trend up early next week as trade winds increase across and upstream of the region.

Watches, Warnings, Advisories

None.

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