Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
354 AM EDT Sun Jul 27 2025

Valid 00Z Mon 28 Jul 2025 - 00Z Mon 04 Aug 2025

Increased moisture is likely over Hawaii for the next couple of
days near a surface trough and under a weak trough aloft, leading
to muggy conditions and possibly increasing shower coverage.
Meanwhile trades should be light to moderate. But trades are
forecast to increase Tuesday-Wednesday to breezy levels and remain
there through the rest of the week. This is coincident with a
tightening pressure gradient as a tropical disturbance (that has a
high chance of development into a tropical cyclone per NHC) will
pass south of the state around midweek. Drier air is also likely
as this tropical low's moisture stays south of the state. Another
tropical low just behind the first one may have some increased
moisture come into the Big Island late week (though the low should
remain south), but the better consensus seems to be for continued
dry conditions with the breezy trades.

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