Halawa, Hawaii 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

405
FXHW60 PHFO 111311
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
311 AM HST Wed Jun 11 2025

.SYNOPSIS...
A trough to the west and a ridge to the northeast will drive
moderate east-southeast winds through today, then strengthen
through the end of the week. Trade winds will focus clouds and a
few showers across windward and mauka areas.

&&

.DISCUSSION...
Currently, this morning looking at radar a few showers are
scattered across the island chain. A few plumes are ongoing to the
south and west of the islands but these shouldn`t be a long term
feature. Satellite shows typical easterly trade clouds with some
high level cirrus streaming in from a decaying system far to the
southwest.

A surface trough to the west and a ridge to the northeast will
drive moderate east-northeast winds across the state today.
Clouds and scattered showers will impact windward and mauka areas.
A hybrid sea breeze pattern is possible along western slopes with
some clouds developing. Stable, zonal flow aloft will keep
showers relatively light this week.

The aforementioned trough will gradually weaken Wednesday through
Friday with high pressure filling in north of the area. Trade
winds across the islands will strengthen around midweek as the
trough weakens. Trades will increase even further this weekend.
Any showers and isolated pockets of rain should follow typical
trends for this time of year with more showers in the overnight
and early morning hours. With the increase in trades expected
showers to favor windward and mauka locations across the chain as
we head through this weekend.

&&

.AVIATION...
Moderate to locally breezy trades will continue across the island
chain through this evening, then strengthen slightly tomorrow.
Clouds and showers will tend to favor windward and mauka areas as
pockets of moisture roll in on the trades, particularly during the
overnight to early morning hours. Outside of any brief showers,
VFR conditions will generally prevail through tomorrow.

No AIRMETs are currently in effect this afternoon. Overnight,
AIRMET Sierra for mountain obscuration may be needed for windward
areas if shower coverage expands and persists.

&&

.MARINE...
High pressure remains nearly stationary far northeast of the
islands through the week re-centering to north and strengthening
this weekend. As a result, fresh to locally strong trades will
become strong on a more widespread basis during the weekend into
early next week. The Small Craft Advisory is in effect for the
windier waters and channels around Maui County and the Big Island
through Thursday.

Surf along south facing shores will slowly decline over the next
couple of days before a small, moderate period south swell fills
in Friday into the weekend.
Surf along east facing shores will remain moderate and choppy
due to moderate trade wind swell, and surf along north facing
shores will remain tiny through the forecast period.

&&

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

&&

$$

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