898
FXHW01 KWNH 200736
PMDHI

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
336 AM EDT Wed Aug 20 2025

Valid 00Z Thu 21 Aug 2025 - 00Z Thu 28 Aug 2025

A typical trade wind pattern, moderately breezy at times, will
prevail with upper ridging over Hawaii for the next week. By the
weekend, troughing from the north may begin to drop south towards
the islands, but the associated front should stay well north.
Winds may weaken some and shift more east- southeasterly. The
overall pattern supports a typical summertime pattern over Hawaii
with drier conditions and not much in the way of rainfall except
for typical windward and mauka areas. Guidance shows good
agreement on the overall setup, but increased uncertainty mid to
late period with the strength of the trough to the north and how
close it may approach the islands.

Santorelli


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