Waipahu, Hawaii 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Waipahu HI
National Weather Service Forecast for:
Waipahu HI
Issued by: National Weather Service Honolulu, HI |
Updated: 6:01 pm HST Jul 8, 2025 |
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Overnight
 Partly Cloudy
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Wednesday
 Mostly Sunny
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Wednesday Night
 Partly Cloudy then Scattered Showers
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Thursday
 Breezy. Scattered Showers then Mostly Sunny
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Thursday Night
 Scattered Showers
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Friday
 Breezy. Isolated Showers then Sunny
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Friday Night
 Scattered Showers and Breezy
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Saturday
 Breezy. Isolated Showers then Mostly Sunny
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Saturday Night
 Isolated Showers and Breezy
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Lo 73 °F |
Hi 86 °F |
Lo 73 °F |
Hi 86 °F |
Lo 73 °F |
Hi 86 °F |
Lo 72 °F |
Hi 86 °F |
Lo 73 °F |
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Overnight
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Partly cloudy, with a low around 73. East northeast wind 8 to 10 mph. |
Wednesday
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Mostly sunny, with a high near 86. East northeast wind 10 to 14 mph, with gusts as high as 18 mph. |
Wednesday Night
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Scattered showers after midnight. Partly cloudy, with a low around 73. East northeast wind 9 to 11 mph. Chance of precipitation is 30%. |
Thursday
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Scattered showers before noon. Mostly sunny, with a high near 86. Breezy, with an east northeast wind 10 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. |
Thursday Night
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Scattered showers, mainly after midnight. Mostly cloudy, with a low around 73. East northeast wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible. |
Friday
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Isolated showers before noon. Mostly sunny, with a high near 86. Breezy, with an east northeast wind 10 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 20%. |
Friday Night
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Scattered showers, mainly after midnight. Partly cloudy, with a low around 72. Breezy, with an east northeast wind 13 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. |
Saturday
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Isolated showers before noon. Mostly sunny, with a high near 86. Breezy, with an east northeast wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 20%. |
Saturday Night
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Isolated showers. Partly cloudy, with a low around 73. Breezy, with an east northeast wind 14 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 20%. |
Sunday
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Mostly sunny, with a high near 87. Breezy, with an east wind 14 to 16 mph, with gusts as high as 22 mph. |
Sunday Night
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Partly cloudy, with a low around 73. Breezy, with an east northeast wind 13 to 16 mph, with gusts as high as 22 mph. |
Monday
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Isolated showers. Mostly sunny, with a high near 87. Breezy, with an east northeast wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. |
Monday Night
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Isolated showers. Partly cloudy, with a low around 73. Breezy, with an east northeast wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. |
Tuesday
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Isolated showers. Mostly sunny, with a high near 87. Breezy, with an east wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 20%. |
Forecast from NOAA-NWS
for Waipahu HI.
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Weather Forecast Discussion
988
FXHW60 PHFO 090339
AFDHFO
Area Forecast Discussion
National Weather Service Honolulu HI
539 PM HST Tue Jul 8 2025
.UPDATE...
Based on recent observations across Maui County and the Big
Island and given the latest guidance will let the Wind Advisory
expire on time as winds continue to weaken. However, may continue
to see some isolated advisory winds in the most wind prone areas
tonight, but widespread advisory winds are not anticipated.
&&
.SYNOPSIS...
A strong high pressure ridge north of the Hawaiian Islands will
continue to produce breezy to windy trade winds through this
evening, with the strongest winds focused across Maui County and
the Big Island. Dry weather conditions will combine with these
strong gusty winds to keep elevated fire danger across the state
through this evening, mainly over the drier leeward slopes. Winds
will ease starting Wednesday, with a ridge aloft confining brief
passing showers to mainly windward and mauka areas.
&&
.DISCUSSION...
Strong high pressure north of the Hawaiian Islands will maintain
breezy to windy easterly trade winds across the state. A Wind
Advisory remains in effect through this evening for the windier
areas of Maui and Hawaii Counties; including the summits of Mauna
Kea and Mauna Loa on the Big Island. Given the latest trends and
model guidance will likely let the Wind Advisory expire at 6 PM
this evening, but would not be surprised to see isolated advisory
gusts continue into tonight.
In addition, the relatively dry humidity levels will combine with
the strong winds to keep elevated fire weather conditions across
the state, mainly over drier and windier leeward areas. Please
refer to the Fire Weather section below for more details.
Satellite imagery this afternoon continue to show bands of fairly
stable clouds moving into windward and mauka areas, with radar
imagery showing light passing showers moving across the islands.
The ridge aloft continue to keep inversion heights around 5,000 to
6,000 feet this afternoon based on soundings at Hilo and Lihue.
The pattern will begin to change tonight into Wednesday as high
pressure north of the state weakens. This will allow our strong
winds to gradually weaken overnight, with moderate to breezy
trades expected for the rest of the week. As the high weakens will
also see the inversion lift back to around 7,000 to 8,000 feet.
This will allow clouds to grow higher, with a return towards
typical summer time trade wind weather expected. An upper level
low just southwest of the islands will help to enhance sunrise and
sunsets as cirrus clouds stream across the region.
&&
.AVIATION...
Strong and gusty trades continue through this afternoon and then
ease on Wednesday. High stability favors continued scattered light
showers with a high coverage of overnight cloud cover windward
and mauka where the occasional MVFR condition will be possible.
Otherwise, VFR prevails.
AIRMET Tango remains for lee turb remains in effect.
&&
.MARINE...
High pressure far northeast of the islands will support fresh to
strong trades across the area. A Small Craft Advisory (SCA) is now
in effect for all Hawaiian coastal waters through 6 AM HST Wednesday.
The surface high will move eastward and weaken slightly during the
second half of the week, but winds are likely to remain breezy to
locally strong in the windier channels and waters of Maui County
and the Big Island through the rest of the week.
A small mid-period south swell will continue through Thursday. A
slight boost to the period expected on Saturday. Another small, long-
period swell expected next Sunday night into Monday. Surf along south
facing shores will boost along with the arrival of the mentioned
swells. Surf along east-facing shores will be rough and choppy due to
the breezy trade winds that will persist the rest of the week.
&&
.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 AM HST Wednesday for all Hawaiian
waters-
&&
$$
UPDATE...Ahue
DISCUSSION...Ahue
AVIATION...JVC
MARINE...Foster
FIRE WEATHER...Ahue
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