Swell Matrix

Area Forecast Discussion

National Weather Service Honolulu Hi

849 pm hst Wed jul 15 2026

Synopsis

High pressure far northeast of the state will return locally breezy trades through the weekend. Winds will ease a bit early next week. Fairly typical summertime weather is expected the next several days, with a few showers favoring windward and mauka areas during the night and morning hours.

Aviation

Moderate trades expected for next few days. Low cigs and SHRA will impact windward and mauka locations. MVFR conds possible in SHRA, otherwise VFR prevails.

No AIRMETs in effect.

Marine

Issued at 350 PM HST Wed Jul 15 2026 High pressure far north of the islands and very broad weak troughing to the west will continue to lead to a slightly veered and lighter trade wind flow across the coastal waters through tonight. Then the pressure gradient between the high to the north sagging south and a couple of lows developing to our south and southwest will strengthen across the area, causing an uptick in trade wind speeds Thursday night into the weekend. As the trades gradually strengthen to fresh to strong levels, a Small Craft Advisory will likely be needed for the typical windier channels and waters around Maui and the Big Island.

A small, long-period west-northwest (280 to 290 degrees) swell from former Super Typhoon Bavi has arrived, peaking through Thursday before gradually subsiding into the weekend. This swell is overlapping for some west-facing shores with a gradually fading small, medium-period southwest (210 to 220 degrees) Tasman swell that is currently bringing near-average surf to south-facing shores. A series of small, long- to medium-period south-southwest (190-200 degrees) swells will arrive starting Thursday night into the weekend, keeping surf slightly below summer average. Then an overlapping moderate, long-period south swell (180 degrees) will arrive early next week, bringing the potential for above-average (though sub-advisory) surf.

As mentioned previously, the west-northwest swell from former Super Typhoon Bavi has arrived and is bringing a slight uptick in surf along exposed north-facing shores this afternoon. This surf will hold into Thursday before gradually fading and returning north shores to flat to tiny status for the weekend.

Surf along east-facing shores will be slightly below seasonal averages through Thursday with lighter trade winds. Surf may then climb back up a notch as trades strengthen through the weekend. Then early to midweek next week, there's potential for a small, long- to medium-period swell to arrive, generated from Tropical Storm Elida.

The Coastal Flood Statement for peak monthly tides has been cancelled.

Watches, Warnings, Advisories

None.

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