Light to moderate trade winds will prevail today, followed by increasing trade wind speeds Friday through this weekend. Most shower activity will occur during the nights and early mornings and affect windward and mauka locations. From Saturday afternoon through Monday, an area of tropical moisture will move over portions of the state from east to west and bring enhanced shower activity to mainly Maui County and the Big Island. A typical stable trade wind pattern will return by Tuesday of next week.
Moderate trade winds will persist today and strengthen to become breezy tomorrow. Isolated showers are possible tonight for mainly windward and mountain areas.
AIRMET Sierra in effect for mountain obscurations above 2500 ft. across north thru east sections of Oahu and Maui.
Issued at 356 AM HST Thu Aug 6 2026 Moderate trades persist as surface troughing to the northeast maintains a rather weak pressure gradient over the state. Dissipation of the trough to the northeast combined with renewed trough development south of the islands and strengthening high pressure to the northeast will favor fresh to locally strong trades by week's end.
Background medium and long period energy will produce small surf for south facing shores through Friday. A series of larger, medium to long period south swells arrive beginning on Saturday, causing surf to trend up for south and west facing shores this weekend into early next week. Surf may peak close to the High Surf Advisory threshold by the middle of next week.
Along east facing shores, trade wind swell and moderate trades will support surf slightly below seasonal averages. Surf will build this weekend in response to strengthening trade winds. Surf along north shores remains flat to tiny through the period.
None.
