Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 319 AM EDT Mon Jun 9 2025 Valid 00Z Tue 10 Jun 2025 - 00Z Tue 17 Jun 2025 Early week upper ridging over Hawaii and surface high pressure well to the north will keep trade winds generally weak with just the typical light showers for windward facing slopes. An upper trough will establish to the west of the state by mid week allowing for an increase in trade speeds and shifting to a more southeasterly direction. Breezy trade winds will continue into early next week as surface high pressure and upper ridging fills in north of the state again. Santorelli