Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
402 AM EDT Sat Jun 13 2026

Valid 00Z Sun 14 Jun 2026 - 00Z Sun 21 Jun 2026

The weekend starts with generally light trade winds and below
normal precipitable water (PW) anomalies. As a frontal boundary to
the north weakens, the pressure gradient across the Central
Pacific will restrengthen and trade winds will strengthen to close
out the weekend and continue into the first half of next week.
The rejuvenated trade wind regime will also re-introduce inflated
PW anomalies. In turn, expect daily episodes of showers and
occasional thunderstorms over the higher terrain of the island
chain through the first half of the week. As a nearby cut-off
upper low northeast of Hawaii moves north and east by mid-week,
upper level ridging will build in aloft in its place. Lighter
trade winds, drier conditions, and slightly hotter temperatures
underneath the strengthening ridge aloft are anticipated for the
second half of next week.


Mullinax