Hawaii Extended Forecast Discussion NWS Weather Prediction Center College Park MD 319 AM EDT Sun May 4 2025 Valid 00Z Mon 05 May 2025 - 00Z Mon 12 May 2025 Guidance continues to show a persistent easterly trade wind pattern over the next week or so featuring upper ridging over the main islands into at least the middle of next week. An upper low out of the Gulf of Alaska will extend troughing towards Hawaii around next Thursday, which may support higher moisture and some increase in windward/mountain-focused showers. Developing surface high pressure to the north of Hawaii will continue moderate to brisk wind speeds through next week. Santorelli