Glenn James

Hawaii Weather Today
Creator, Author, and Administrator for 30 years

 

The latest update to this website was at 707am Monday morning HST


Here are the latest 24-hour precipitation totals (inches) for each of the island Monday morning: 

0.34  N Wailua Ditch, Kauai 
0.11  Olomana FS, Oahu
0.00  Molokai
0.00  Lanai
0.14  West Wailuaiki, Maui
0.64  Kealakekua, Big Island


The following numbers represent the strongest wind gusts (mph) Monday morning:

15  Lawai, Kauai – NE
22  Oahu Forest NWR, Oahu – ENE
21  Makapulapai, Molokai – E 
29  Kealaloloa Rg, Maui – NNE 
27  Kealakomo, Big Island – NW


Hawaii’s MountainsHere’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the (~10,023 feet high) Haleakala Crater on Maui. These webcams are available during the daylight hours here in the islands, and at night whenever there’s a big moon shining down. Also, at night you will be able to see the stars, and the sunrise and sunset too…depending upon weather conditions.


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Big Blue…click twice for largest version

 

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  Tropical Storm 14E (Norbert) and Tropical Cyclone 15E (further east than Norbert) moving westward…Norbert steadily weakening with no wind threat to Hawaii from either system, although there will be locally heavy rain later in the week from Norbert


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Variable clouds across the state and over the offshore waters…especially to the east which will bring increasing windward biased showers for the most part 

 

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Localized Showers 

 

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Please open this link to see details on any current Watches, Warnings and Advisories noted above




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Hawaii Weather Narrative
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Glenn’s Monday comments:  I’m at home here in upper Kula, Maui, Hawaii

455am, it’s clear here at my place. My low temperature here in upper Kula was 54 degrees, relative humidity 78%…and calm winds

 

Wondering whether this autumn and winter will be drier or wetter than normal here in Hawaii? Well, it looks like it could be markedly drier than normal. This doesn’t mean that there won’t be any cold fronts or upper level lows, that will bring some good moisture, just fewer than we’d likely prefer.

 

Tropical Storm 14E (Norbert) remains active far east 

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Hawaii’s Weather Highlights…as of Monday morning: An increase of moisture from the remnants of Norbert will bring a wet trade wind pattern from late Wednesday through Friday. Deep tropical moisture combined with some instability, will bring an increase of heavy rain especially over windward and mauka areas. In areas that see less rainfall such as leeward areas, hot and muggy conditions are expected by the middle of the week. Improving weather conditions are generally expected by next weekend, but some scattered showers will likely persist.

Weather Narrative…as of Monday morning: Satellite imagery shows a band of moisture east of the Big Island, which will be moving east to west across the state today. Atmospheric soundings from Lihue and Hilo show a stable trade wind inversion at around 5,000 to 6,500 ft. While stable conditions are expected to persist over the next few days, the increase of moisture will bring an increase of humidity and some light to moderate showers over windward and mountain areas. Dew points are expected to get into the 70’s later today into Tuesday, which will bring some muggy weather across the state.

Starting Wednesday and continuing through Friday, the weather pattern will change, as the remnants of Norbert moves east to west across the state. Deep tropical moisture from Norbert combined with a weak upper level trough, will bring an increase of heavy showers especially by Thursday. With trades picking up to moderate to breezy speeds by late Wednesday into Thursday, the focus of these heavy rain will be over windward and mauka areas. A Flood Watch may be warranted especially for Thursday into Thursday night.

So overall we are expecting a wet, trade wind pattern during the second half of the week, with the focus of the heavier showers over windward and mauka areas. While leeward areas should see some frequent showers, in areas with less shower activity can expect hot and muggy weather.

Over the weekend, while the bulk of the deep tropical moisture should have moved west of the state, showery weather could linger through at least parts of Saturday. But generally improving weather conditions are expected this weekend with moderate to breezy trade winds.

Fire Weather:  Fire weather risk will remain low throughout this week, due to light to moderate trade winds the next few days, followed by a wet trade wind pattern during the second half of the week. Inversion heights should be around 5,000 to 7,000 ft through Tuesday due to stable conditions.

 

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Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Here’s the latest Weather MapLooping Surface Precipitation…through the next 8-days / Vog Map

 

Marine Conditions…as of Monday morning: Moderate to locally fresh trades will continue through Tuesday before strengthening through the latter half of the week. Moisture associated with a weak trough moving in on the trade wind flow may bring a slight uptick in shower activity today into Tuesday. Wednesday night, the remnants of Tropical Storm Norbert enter the offshore waters and are forecast to bring a more significant increase in moisture and stronger trade winds Thursday into the weekend.

Surf along south-facing shores will be slightly below seasonal average through Tuesday. A series of long-period swells are expected during the second half of the week. The first pulse will gradually fill in tonight into Wednesday out of the southwest, followed by larger south-southwest swells Friday into the weekend. Surf gradually trends upward through the week beginning Wednesday and will approach advisory thresholds by the weekend.

Surf along east-facing shores should see an increase during the second half of the week as the trades strengthen and the remnants of Tropical Storm Norbert move through the islands. Flat to tiny surf along north facing shores is expected through the forecast period.

 

>>> Highest Temperature Sunday, September 13, 2026 – 113 degrees at Death Valley, CA


>>>
Lowest Temperature Sunday, September 13, 2026 – 26 degrees near McCloud, CA

 

The Top Things to Do in Oahu, Hawaii | Condé Nast Traveler


World-wide Tropical Cyclone Activity

 



>>>
Here’s a link to the latest Pacific Disaster Center’s
Weather Wall


Atlantic Ocean: There are no active tropical cyclones

>>> Central Subtropical Atlantic:

A trough of low pressure located a little more than 1000 miles east-southeast of Bermuda continues to produce disorganized showers and thunderstorms. Environmental conditions over the system are currently unfavorable for development due to strong upper-level winds. However, as the system moves west-northwestward across the central part of the Subtropical Atlantic, it is forecast to enter a more conducive environment for

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…30 percent 

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Caribbean Sea: There are no active tropical cyclones


Gulf of America:
There are no active tropical cyclones

 

 Northeast Pacific:

Tropical Cyclone 14E (Norbert)…is located about 1125 miles east of Hilo, Hawaii

NORBERT HOLDING STEADY

According to the NHC advisory number 20…

Norbert is moving toward the west near 15 mph and is expected to maintain this general motion during the next couple of days. Maximum sustained winds are near 40 mph with higher gusts. A gradual weakening trend is forecast during the next couple of days, and Norbert could become a post-tropical cyclone tomorrow. Tropical-storm-force winds extend outward up to 80 miles from the center. The estimated minimum central pressure is 1005 mb (29.68 inches).

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Tropical Cyclone 15E…is located about 785 miles southwest of the southern tip of Baja, CA

DEPRESSION CONTINUES TO MOVE WEST-SOUTHWESTWARD OVER THE EASTERN PACIFIC

According to the NHC advisory number 4…

The depression is moving toward the west-southwest near 9 mph and this motion is expected to continue for the next several days with some gradual acceleration. Maximum sustained winds are near 35 mph with higher gusts. Some slight strengthening is forecast during the next 24 hours, and the depression could become a tropical storm later today. The system is expected to weaken beginning Tuesday night or Wednesday. The estimated minimum central pressure is 1006 mb (29.71 inches).

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Central North Pacific: There are no active tropical cyclones

 

Northwest Pacific Ocean: There are no active tropical cyclones

>>> There’s an area of disturbed weather being referred to as Invest 90W, which is located approximately 342 NM north of Chuuk

 

Southwest Pacific Ocean: There are no active tropical cyclones

North and South Indian Oceans / Arabian Sea: There are no active tropical cyclones

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Here’s the link to the Joint Typhoon Warning Center (JTWC)



Interesting: 
Coyote Density Is 9 Times Higher in Seattle Than in Washington’s Wild Lands

Once coyotes get a taste for city living, the call of the wild fades to a whisper. Food is abundant and predators are few. Research indicates that coyotes enjoy the benefits of urban areas enough to put up with all the people, and Seattle is no exception.

Over the past century, coyotes have colonized every major metropolitan area in North America. Chicago is home to an estimated 4,000 coyotes, and in Los Angeles, urban coyote density is at least seven times higher than in wild areas. Coyotes are often spotted in parks and neighborhoods throughout Seattle, but the lack of formal data makes it difficult for researchers to track trends.

“We observed a ninefold increase in coyote density in Seattle compared to more natural and wild areas of the state,” said lead author Laura Prugh, a UW professor of environmental and forest sciences. “That might surprise people who think of coyotes as afraid of humans, but I think it just shows how ideal the urban setting is for coyotes.”

The results were published Sept. 10 in Environmental Research: Ecology.

Read More: University of Washington

Image: This coyote was photographed by a game camera in the Union Bay Natural Area in Seattle, Wash., near the University of Washington campus in 2017 during a course on wildlife techniques taught by Laura Prugh, a UW professor of environmental and forest sciences.