Glenn James

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

 

The latest update to this website was at 1251pm Monday afternoon HST


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

0.58  Kilohana, Kauai
1.28  Schofield East, Oahu
0.45  Puu Alii, Molokai
0.00  Lanai
4.12  Puu Kukui, Maui
5.34  Kawainui Stream, Big Island


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

29  Lihue, Kauai – ENE
32  Kuaokala, Oahu – NE
35  Molokai AP, Molokai – NE
35  Lanai 1, Lanai – NE
35  Na Kula, Maui – E 
40  Lalamilo, Big Island – NE


Hawaii’s Mountains – Here’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.


https://weather.gc.ca/data/satellite/goes_gwdisk11_1070_100.jpg

Big Blue…click twice for largest version

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

 Cold front far northwest…thunderstorms in the deeper tropics

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/GOES18-HI-GEOCOLOR-600x600.gif

Clear to variable cloudy over the island chain…high clouds to the south

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

Localized Showers 

 

https://www.weather.gov/wwamap/png/hfo.png

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




~~~
Hawaii Weather Narrative
~~~

 

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

515am, it’s mostly clear here at my place, the low temperature was 54.5 degrees, relative humidity is 80%…with calm winds

920am, sunny to partly sunny…with partly to mostly cloudy windward coasts and slopes.

 

Hawaii’s Weather Highlights…as of Monday afternoon: A high pressure system will remain far north of the Hawaiian Islands, keeping trade winds in the moderate to locally windy range through Tuesday. A low level trough passing through the islands tonight will keep enhanced showers favoring the windward mountain slopes of Maui and the Big Island. Medium range model solutions are showing a deepening low setting up just north of the island chain from Thursday onward, potentially increasing shower activity from Friday into the weekend.

Weather Narrative…as of afternoon: Satellite imagery shows deeper low level clouds banking up against the windward mountains of each of the larger islands in the chain. These unstable clouds are driven up the mountain slopes by the trade winds, producing periods of showers for communities near or just leeward of these windward island mountains.

Traditionally drier leeward areas will still see some brief passing showers, just less frequent and lower rainfall amounts. Any showers that develop will favor the early morning hours, with the typical diurnal drying trends for the late morning and afternoon periods.

In the big picture, a strong high pressure system will linger just north of the Hawaiian Islands through Wednesday, keeping moderate to locally windy trade winds blowing through Tuesday. Trade wind speeds will show weakening trends from Wednesday to Thursday, as a cut off low pressure system deepens and drifts eastward just north of the islands. The latest track of this cold core low has shifted farther northeast of the islands, decreasing chances for southerly winds and more significant rainfall activity for Friday into next weekend.

Trade wind speeds will weaken from Friday onward as the low’s passage north of the islands disrupts the large scale high pressure gradient over the Hawaii region. This system, both the track and intensity will evolve over time. Bottom line: The closer the low tracks relative to the islands, the wetter the weather pattern will become.

Fire Weather:  Fire weather will remain below critical levels for the next several days. The subsidence temperature inversion near Maui and the Big Island today will drop into the 7,000 to 8,000 foot range.

https://www.weather.gov/images/hfo/graphics/npac.gif


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 Map / Looping Surface Precipitation…through the next 8-days / Vog Map

 

Marine Conditions…as of Monday afternoon: Robust surface high pressure centered far north of Hawaii will maintain fresh to strong trade winds at current strength for the next couple of days, and a Small Craft Advisory (SCA) remains in effect for all waters, except windward Big Island through early Tuesday. Trades will steadily decrease late Tuesday and Wednesday as the high weakens, and is displaced eastward by an approaching low far northwest of the islands. The SCA will likely be trimmed back to the typically windy waters around Big Island and Maui at that time. Trade winds will lower to gentle strength, or may become disrupted, as the low passes to the north Thursday and Friday.

A north-northwest swell and a smaller overlapping west-northwest swell will slowly decline today and fade on Tuesday. A very small northwest swell may arrive Thursday, followed by a moderate north-northwest swell by the weekend.

The current south swell will continue a slow decline today. South shore surf will drop below seasonal average and will remain relatively small through much of the week. A moderate south-southwest swell is expected by the weekend.

Rough trade wind swell will produce east shore surf just above seasonal average through Tuesday, then decline later in the week as trade winds decrease.

 

>>> Highest Temperature Sunday, October 18, 2026 – 94 degrees at Bradley, CA


>>>
Lowest Temperature Sunday, October 18, 2026 – 11 degrees at Angel Fire, NM

 

Discover the Endless Beauty of Hawaii Landscape Photography


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 

>>> Off the East Coast of the United States:

A storm-force non-tropical low pressure area is located along a frontal boundary a few hundred miles off the southeast coast of the United States. This low is likely to move slowly and erratically over the next couple of days. If the low remains over the Gulf Stream and becomes detached from the front, it could briefly acquire some subtropical cyclone characteristics during the middle to latter portions of the week. The system is expected to begin to move northeastward away from the the eastern United States later this week, and environmental conditions are expected to become unfavorable for development by the weekend. Regardless of the status of the system, high winds, coastal flooding, and dangerous surf are expected along portions of the U.S. East Coast during the next few days.

* Formation chance through 48 hours…low…near 0 percent.
* Formation chance through 7 days…medium…40 percent


Caribbean Sea:
There are no active tropical cyclones


Gulf of America:
There are no active tropical cyclones

 

Northeast Pacific

Tropical cyclone 21E (Trudy) is located about 160 miles west-southwest of Cabo Corrientes, Mexico 

TRUDY NEARLY STATIONARY AS IT WEAKENS

According to the NHC advisory number 26 

Trudy is nearly stationary, but is forecast to begin moving to the northwest over the next 24 hours. Maximum sustained winds have decreased to 40 mph with higher gusts. Further weakening is forecast during the next 48 hours, and Trudy is forecast to become post-tropical by tomorrow. Tropical-storm-force winds extend outward up to 45 miles from the center. The estimated minimum central pressure is 1004 mb (29.65 inches).

cone graphic

 

>>> South of Southern Mexico:

Invest 94E

Showers and thunderstorms, associated with a trough of low pressure located several hundred miles south-southwest of Guatemala, remain disorganized. Environmental conditions appear conducive for development, and a tropical depression is expected to form around the middle of this week as the system moves westward to west-northwestward at around 10 mph, well to the south of the coast of southern Mexico.

* Formation chance through 48 hours…medium…60 percent
* Formation chance through 7 days…high…90 percent

 

Central North Pacific: There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7 days.

 

Northwest Pacific Ocean:

Tropical Cyclone 29W (Champi)…is located approximately 766 NM south-southwest of Chichi Jima                                                                                     

https://www.metoc.navy.mil/jtwc/products/wp2926.gif

 

Southwest Pacific Ocean: There are no active tropical cyclones

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

 

https://www.metoc.navy.mil/jtwc/products/abpwsair.jpg

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



Interesting: 
Forests Are Dying Along North Carolina’s Coast – And It’s Speeding Up

A new study finds that coastal forest loss in North Carolina’s Albermarle-Pamlico Peninsula began accelerating after 2010 and may still be speeding up.  The study also found that N.C. lost more than 20% of its coastal forest between 1985 and 2021.

Researchers used satellite imagery to track coastal forest loss in N.C. from 1985 through 2021 and found the state experienced a 21% loss of coastal forests, or approximately 64,220 hectares. Just over 40,000 ha of that land was lost to marsh, ghost forest and shrub, specifically.

That loss did not happen linearly, said Titilayo Tajudeen, lead author of a paper on the study and graduate researcher at North Carolina State University.

“Between 2010 and 2021, we saw 23,876 ha of forest were converted to marsh, ghost forest, and shrub,” Tajudeen said. “That is 1.5 times higher than the 16,968 ha lost to marsh, ghost forest, and shrub between 1985 and 2010.”

Read More: North Carolina State University