Pearl City, Hawaii 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

479
FXHW60 PHFO 231311
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
311 AM HST Mon Jun 23 2025

.SYNOPSIS...

Strong trade winds will gradually weaken over the next several
days with moderate trades expected by the middle of the week.
Showers will increase and will mainly be focused over windward
and mauka areas with light rainfall amounts.

&&

.DISCUSSION...

Currently, looking at radar and satellite we have clouds showers
moving across the islands with some upper level clouds streaming
overhead during to a upper level low to the west.

Trades will gradually weaken over the next few days. A weak upper
level trough will pass near the state late Monday into Tuesday.
This could enhance showers particularly near Kauai through late
Tuesday and maybe Wednesday. Some weak instability will be
greatest near Kauai, which should allow for some periods of
moderate rain. For rest of the state, the shower activity is not
expected to be as frequent as Kauai, but some passing showers are
expected through at least the middle of the week with windward and
mauka locations getting most of the showers.

The aforementioned upper level trough should move westward and
away from Kauai by Thursday with an upper level ridge building in
from east. Drier conditions will be possible towards the end of
the week and into the weekend. However some passing showers riding
in on the moderate trades can`t be ruled out.

&&

.AVIATION...

Breezy trades through today and will gradually decline through
midweek. Windward and mauka showers expected with some limited
spillover so some leeward areas. MVFR conds in heavier SHRA
otherwise VFR prevails.

AIRMET Sierra is in effect for windward portions of all islands.
Conds should improve in the morning hours.

AIRMET Tango is in effect for mod turb downwind of island
terrain.

&&

.MARINE...

High pressure far northeast of the islands will drive moderate to
locally strong trade winds through tonight before weakening
during the remainder of the week. The Small Craft Advisory has
been scaled back to the windier waters and channels around Maui
County and the Big Island through tonight.

Surf along south shores will remain small through the early
afternoon today until a moderate, long period south swell starts
filling in slowly. This swell is expected to peak just below High
Surf Advisory criteria on Tuesday before declining Wednesday.

Surf along east facing shores will remain rough and choppy through
the week. Surf along north facing shores will remain tiny with
mainly background energy through the forecast period.

Peak high tides associated with the lunar cycle will lead to
minor coastal flooding along shorelines and low lying coastal
areas through Thursday. A Coastal Flood Statement has been issued
for the daily peak tide each afternoon and may be exacerbated by
the ongoing south swell as it peaks on Tuesday.


&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 AM HST Tuesday for Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.

&&

$$


DISCUSSION...Walsh
AVIATION...Walsh
MARINE...Shigesato