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Wailuku, Hawaii 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Wailuku HI
National Weather Service Forecast for: Wailuku HI
Issued by: National Weather Service Honolulu, HI
Updated: 6:08 am HST Jul 10, 2025
 
Tonight

Tonight: Mostly clear, with a low around 71. Breezy, with a north northeast wind 10 to 16 mph, with gusts as high as 22 mph.
Partly Cloudy
and Breezy
then Mostly
Clear
Friday

Friday: Sunny, with a high near 84. Breezy, with a northeast wind 10 to 16 mph, with gusts as high as 22 mph.
Sunny and
Breezy

Friday
Night
Friday Night: Scattered showers, mainly before midnight.  Partly cloudy, with a low around 72. Breezy, with an east northeast wind 11 to 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 40%.
Scattered
Showers and
Breezy
Saturday

Saturday: Isolated showers before noon.  Sunny, with a high near 85. Breezy, with an east northeast wind 11 to 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.
Breezy.
Isolated
Showers then
Sunny
Saturday
Night
Saturday Night: Mostly clear, with a low around 72. Breezy, with an east northeast wind 13 to 15 mph, with gusts as high as 21 mph.
Mostly Clear
and Breezy
then Mostly
Clear
Sunday

Sunday: Sunny, with a high near 84. Breezy, with an east northeast wind 13 to 15 mph, with gusts as high as 21 mph.
Sunny and
Breezy

Sunday
Night
Sunday Night: Mostly clear, with a low around 72. Breezy, with an east northeast wind 10 to 15 mph, with gusts as high as 21 mph.
Mostly Clear
and Breezy
then Mostly
Clear
Monday

Monday: Isolated showers after noon.  Mostly sunny, with a high near 85. East northeast wind 10 to 13 mph.  Chance of precipitation is 20%.
Sunny then
Isolated
Showers
Monday
Night
Monday Night: Partly cloudy, with a low around 72. East northeast wind 11 to 13 mph.
Partly Cloudy

Lo 71 °F Hi 84 °F Lo 72 °F Hi 85 °F Lo 72 °F Hi 84 °F Lo 72 °F Hi 85 °F Lo 72 °F

 

Tonight
 
Mostly clear, with a low around 71. Breezy, with a north northeast wind 10 to 16 mph, with gusts as high as 22 mph.
Friday
 
Sunny, with a high near 84. Breezy, with a northeast wind 10 to 16 mph, with gusts as high as 22 mph.
Friday Night
 
Scattered showers, mainly before midnight. Partly cloudy, with a low around 72. Breezy, with an east northeast wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Saturday
 
Isolated showers before noon. Sunny, with a high near 85. Breezy, with an east northeast wind 11 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday Night
 
Mostly clear, with a low around 72. Breezy, with an east northeast wind 13 to 15 mph, with gusts as high as 21 mph.
Sunday
 
Sunny, with a high near 84. Breezy, with an east northeast wind 13 to 15 mph, with gusts as high as 21 mph.
Sunday Night
 
Mostly clear, with a low around 72. Breezy, with an east northeast wind 10 to 15 mph, with gusts as high as 21 mph.
Monday
 
Isolated showers after noon. Mostly sunny, with a high near 85. East northeast wind 10 to 13 mph. Chance of precipitation is 20%.
Monday Night
 
Partly cloudy, with a low around 72. East northeast wind 11 to 13 mph.
Tuesday
 
Sunny, with a high near 85. Breezy, with an east northeast wind 13 to 15 mph, with gusts as high as 21 mph.
Tuesday Night
 
Mostly clear, with a low around 72. Breezy, with an east northeast wind around 16 mph, with gusts as high as 22 mph.
Wednesday
 
Sunny, with a high near 85. Breezy, with a northeast wind 16 to 22 mph, with gusts as high as 31 mph.
Wednesday Night
 
Mostly clear, with a low around 72. Breezy, with an east northeast wind 16 to 21 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 29 mph.
Thursday
 
Sunny, with a high near 85. Breezy, with an east northeast wind 14 to 20 mph, with gusts as high as 28 mph.

 

Forecast from NOAA-NWS for Wailuku HI.

Weather Forecast Discussion
679
FXHW60 PHFO 101313
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
313 AM HST Thu Jul 10 2025

.SYNOPSIS...

High pressure far northeast of the state will maintain moderate
to locally breezy trades through the week. Expect fairly typical
summertime weather with clouds and showers favoring windward and
mauka areas.

&&

.DISCUSSION...

Currently, satellite imagery shows small bands of moisture
embedded in the trades with clouds moving into windward and mauka
areas. Radar imagery shows showers across the area which are
expected to continue into the early morning hours.

A high pressure is parked well to the northeast of the state.
This high is expected to be in place until Sunday when it will
drift off to the north. Due to this high, moderate to breezy
trades should continue through Saturday. Once the high starts
drifting away trades should weaken a bit.

While an organized source of moisture upstream is lacking with a
dry and stable airmass overhead we can expect typical summertime
showers and clouds to favor windward and mauka slopes through the
forecast period.


&&

.AVIATION...

Moderate to locally breezy trades will persist for the next
couple of days. Low cigs and SHRA should mainly be focused over
windward and mauka locations. MVFR conds possible in SHRA,
otherwise VFR prevails.

AIRMET Sierra is in effect for mtn obsc for windward portions of
all of the smaller islands.

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

&&

.MARINE...

High pressure far northeast of the waters will drive moderate to
locally strong trade winds. The Small Craft Advisory that is in
effect for the typical windy waters around Maui County and Big
Island has been extended through Friday afternoon. Trades may
slightly weaken early next week as the high moves further away to
the north.

The recent small, long period south swell will continue its
decline through the day. A reinforcing longer period south swell
is scheduled to arrive Friday night. This little boost, in tandem
with another small, long period south swell arriving Sunday night
into Monday, will hold south-facing shore surf to summer averages
(~5 to 6 ft in higher sets). East-facing shore surf will remain
rough as moderate to fresh trades blow the remainder of the week.
A very small northwest swell originating behind a front hanging up
far northwest of the islands may pass through early next week.

&&

.FIRE WEATHER...

Moderate to locally breezy trade winds will continue through the
next several days. Afternoon relative humidity should be near
summertime normals. Expect typical summertime fire weather
conditions into next week.


&&

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


&&

$$


DISCUSSION...Walsh
AVIATION...Walsh
MARINE...Blood
FIRE WEATHER...Walsh
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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