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Waimalu, Hawaii 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Aiea HI
National Weather Service Forecast for: Aiea HI
Issued by: National Weather Service Honolulu, HI
Updated: 4:01 pm HST Aug 8, 2025
 
Tonight

Tonight: Isolated showers before midnight.  Partly cloudy, with a low around 76. Breezy, with an east northeast wind 13 to 18 mph becoming light north northeast  after midnight. Winds could gust as high as 25 mph.  Chance of precipitation is 20%.
Breezy.
Isolated
Showers then
Mostly Clear
Saturday

Saturday: Sunny, with a high near 88. Light north northeast wind becoming east northeast 9 to 14 mph in the morning. Winds could gust as high as 18 mph.
Sunny

Saturday
Night
Saturday Night: Isolated showers.  Mostly cloudy, with a low around 76. East northeast wind 5 to 10 mph.  Chance of precipitation is 20%.
Isolated
Showers

Sunday

Sunday: Mostly sunny, with a high near 87. Southeast wind around 6 mph.
Mostly Sunny

Sunday
Night
Sunday Night: Scattered showers before midnight.  Partly cloudy, with a low around 76. East southeast wind around 6 mph.  Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Scattered
Showers then
Mostly Clear
Monday

Monday: Scattered showers.  Partly sunny, with a high near 88. East southeast wind 5 to 7 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Scattered
Showers

Monday
Night
Monday Night: Scattered showers, mainly before midnight.  Partly cloudy, with a low around 77. East northeast wind 7 to 13 mph.  Chance of precipitation is 30%.
Scattered
Showers

Tuesday

Tuesday: Isolated showers before noon.  Sunny, with a high near 88. Breezy, with an east northeast wind 13 to 16 mph, with gusts as high as 22 mph.  Chance of precipitation is 20%.
Breezy.
Isolated
Showers then
Sunny
Tuesday
Night
Tuesday Night: Isolated showers.  Partly cloudy, with a low around 77. East northeast wind 11 to 13 mph.  Chance of precipitation is 20%.
Isolated
Showers

Lo 76 °F Hi 88 °F Lo 76 °F Hi 87 °F Lo 76 °F Hi 88 °F Lo 77 °F Hi 88 °F Lo 77 °F

 

Tonight
 
Isolated showers before midnight. Partly cloudy, with a low around 76. Breezy, with an east northeast wind 13 to 18 mph becoming light north northeast after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Saturday
 
Sunny, with a high near 88. Light north northeast wind becoming east northeast 9 to 14 mph in the morning. Winds could gust as high as 18 mph.
Saturday Night
 
Isolated showers. Mostly cloudy, with a low around 76. East northeast wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday
 
Mostly sunny, with a high near 87. Southeast wind around 6 mph.
Sunday Night
 
Scattered showers before midnight. Partly cloudy, with a low around 76. East southeast wind around 6 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
 
Scattered showers. Partly sunny, with a high near 88. East southeast wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
 
Scattered showers, mainly before midnight. Partly cloudy, with a low around 77. East northeast wind 7 to 13 mph. Chance of precipitation is 30%.
Tuesday
 
Isolated showers before noon. Sunny, with a high near 88. Breezy, with an east northeast wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tuesday Night
 
Isolated showers. Partly cloudy, with a low around 77. East northeast wind 11 to 13 mph. Chance of precipitation is 20%.
Wednesday
 
Sunny, with a high near 87. East northeast wind 10 to 14 mph, with gusts as high as 18 mph.
Wednesday Night
 
Isolated showers. Partly cloudy, with a low around 76. Northeast wind 8 to 10 mph. Chance of precipitation is 20%.
Thursday
 
Isolated showers. Mostly sunny, with a high near 89. East wind around 9 mph. Chance of precipitation is 20%.
Thursday Night
 
Isolated showers. Partly cloudy, with a low around 76. East wind around 9 mph. Chance of precipitation is 20%.
Friday
 
Scattered showers. Mostly sunny, with a high near 88. East wind 8 to 10 mph. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Aiea HI.

Weather Forecast Discussion
081
FXHW60 PHFO 090101
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
301 PM HST Fri Aug 8 2025

.SYNOPSIS...
Trades diminish by Saturday afternoon resulting in a return of
hot and humid conditions as humidity gradually creeps up through
the weekend. Moderate trades return by the middle of next week.


&&

.DISCUSSION...

Locally breezy trades are poised to diminish as quickly as they
returned as Henriette passes north of the islands and wipes out
the local pressure gradient as early as Saturday afternoon. A land
and sea breeze pattern is then favored through at least Monday.
Hot and humid conditions gradually return during this time,
particularly as low level winds veer to SE in response to
developing upper troughing and advect dewpoints in the 70s back
into the area early next week. Gradual weakening of the inversion
as this occurs will favor increasing odds for afternoon clouds and
showers over island interiors, especially by Monday when low-
level moisture will be maximized and stability at a relative
minimum. Henriette advances north of 30N by Tuesday relinquishing
the islands from any of its effects, but a general pattern of mid-
level height falls over the central and east Pacific continue
well into next week which will generally keep trades moderate as
stable weather returns for remainder of the forecast period.




&&

.AVIATION...

Breezy trades continue through the near term then gradually
diminish during Saturday as a tropical system passing north of the
islands wipes out the local pressure gradient. Limited clouds and
showers windward and mauka will produce patchy MVFR but VFR is
forecast to prevail.

AIRMET Tango for lee turb will be allowed to expire this evening.



&&

.MARINE...

Moderate to locally strong trade winds will decrease tonight
through tomorrow as Post Tropical Cyclone Henriette approaches
the area and passes northeast of the offshore waters. Winds will
become light and variable tomorrow through Monday morning due to
the weakening ridge from Henriette. Then as Henriette exits the
region to the north, the ridge will build back in by Monday
afternoon through the remainder of next week, increasing trade
winds into the fresh range by Tuesday. Global models indicate a
trough approaching the area and weakening the winds again by the
later part of next week.

Elevated surf heights can be observed today across the south
facing shores. This is from a swell that arrived earlier today
and will continue supporting advisory level surf before another
reinforcing pulse arrives tonight into tomorrow. Surf heights are
expected to border on warning levels later tonight and hold
through tomorrow. A High Surf Advisory for all south-facing shores
is in effect through Sunday night and could be upgraded to a
warning if the swell comes in larger. The swell will gradually
fade through next week.

Surf for east facing shores should remain choppy tonight and
should decrease slightly tomorrow as trade winds decrease. A
medium period east swell from Tropical Storm Henriette may arrive
around Sunday and briefly increase the east facing shores.

A small, medium northwest swell passing through today and tomorrow
will keep north shore surf from going completely flat. Another
tiny northwest swell is expected to arrive by Monday.

Peak afternoon high tides, combined with elevated water levels
running about a half a foot higher than predicted and a large
south swell, will lead to minor flooding along many south-facing
shorelines and low lying coastal areas through Sunday afternoon.

&&

.FIRE WEATHER...
Breezy trades gradually diminish through Saturday with light
winds then continuing into next week. After bottoming out in the
upper 60s today, dewpoints will gradually rise back into the 70s
for Sunday and Monday. Minimal fire weather concerns during this
time.



&&

.HFO WATCHES/WARNINGS/ADVISORIES...
High Surf Advisory until 6 AM HST Monday for Niihau-Kauai
Leeward-Waianae Coast-Kahoolawe-Maui Leeward West-Kona-Kohala-
Kauai South-East Honolulu-Honolulu Metro-Ewa Plain-Molokai
Southeast-Molokai Leeward South-Lanai Leeward-Lanai South-Maui
Central Valley South-South Maui/Upcountry-South Haleakala-Big
Island South-Big Island Southeast.


&&

$$


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






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