Moderate to locally breezy trade winds will continue through Monday before gradually decreasing by midweek. Another round of moisture will move in from the east by next Tuesday, increasing shower activity across the state.
Issued at 317 PM HST Sat Sep 19 2026 Breezy trades will persist through the weekend and continue to focus clouds and isolated to scattered showers over windward and mountain areas. In addition to the windward shower activity, isolated to scattered showers have developed over the Kona slopes of the Big Island this afternoon and are expected to develop again tomorrow, though coverage may be less due to slightly drier conditions.
AIRMET Tango remains in effect for moderate low-level turbulence downwind of island terrain due to the breezy trade winds. This AIRMET will likely be needed through much of the weekend.
Issued at 317 PM HST Sat Sep 19 2026 A weak axis of high pressure is anchored along 35N while surface pressure falls remain prominent S/SE of the islands. The resulting gradient maintains locally strong trades through at least the first half of next week. The Small Craft Advisory for the typical windy waters around Maui County and Big Island is now in effect through Monday afternoon. A weak tropical disturbance potentially brings strengthening trades, a greater coverage showers, and isolated thunderstorms, during the middle of next week.
Surf along S shores remains above average through the weekend as long period SSW swell holds steady. This swell then fades during the middle of the week only to be followed by a small S swell shortly thereafter.
Trades maintain moderate surf along E shores well into next week. Surf along N shores remains flat to tiny with a minor bump possible Tuesday into Wednesday of next week. A small long period WNW swell then builds late next week.
Small Craft Advisory until 6 PM HST Monday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Maalaea Bay-Pailolo Channel.
