Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
440 AM EDT Fri Sep 26 2025

Valid 00Z Sat 27 Sep 2025 - 00Z Sat 04 Oct 2025

Over the next week surface high pressure will be weakening to the
north of the island while a cutoff low weakens and drifts
westward. This will allow an increase in moisture to the region
which should support some areas of locally heavy rainfall.
Easterly trades will return early next week as upper riding and 
surface high pressure rebuilds to the north.

Campbell