Glenn James

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

 

The latest update to this website was at 1035am Friday morning HST


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

0.28  Common Ground, Kauai
1.05   Moanalua RG, Oahu
0.20  Puu Alii, Molokai
0.00  Lanai
0.66  Ulupalakua , Maui
0.37  Kulaimano, Big Island


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

15  Puu Lua, Kauai – NE
18  Kuaokala, Oahu – NE
16  Molokai AP, Molokai – NE
20  Lanai 1, Lanai – NE
22  Kealaloloa Rg, Maui – NNE
23  Kawaihae Rd, 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.


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Big Blue…click twice for largest version

 

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 Cold front far northwest…thunderstorms in the deeper tropics

 

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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 Aloha Friday comments:  I’m at my friend Bob’s in Bend, Oregon on a working vacation.

550am , it’s mostly clear here in Bend, Oregon, the low temperature was 29 degrees…with calm winds

1045am, still clear here in eastern Oregon, with the current temperature at Bob’s 54.1 degrees. We just got back from one of our favorite places, called The Commons,  where I got a dirty Chai, and talked sitting outside in the chilly air with warm sunshine.

 

Here’s the NOAA Climate Prediction Center’s Hawaii seasonal outlook: Hilo, Kahului, Honolulu and Lihue each a 75% probability of below-normal three-month rainfall totals for December 2026–February 2027

 

Hawaii’s Weather Highlights…as of Friday morning: Light to moderate trade winds are expected through the weekend. Brief passing showers will move into windward and mountain areas on the northeasterly trade winds, favoring the overnight to early morning hours. A more significant change to our weather pattern continues to evolve for next week. Deeply unstable tropical moisture moving across the state, will bring the potential for heavy rain and thunderstorms to most islands starting around Monday night or Tuesday, persisting through at least the middle of the week.

Short Term Update: Satellite and radar imagery show mostly sunny conditions across the smaller islands, with isolated showers moving in on the light to moderate northeasterly trade wind flow. Also evident on satellite imagery is a surface trough just east of the state, with the leading edge of its large plume of moisture moving into south- and east-facing portions of the Big Island. This feature is expected to bring increased cloud cover and scattered showers to windward portions of the Big Island and Maui through tonight, before the trough gradually pushes off to the east, pulling this moisture away from the state.

Weather Narrative…as of Friday morning: The trade winds have eased to become light to moderate in response to the weakening pressure gradient, as the surface high gets pushed farther northeast of the state, and a low pressure system sets up to the north. As this low continues to drift southeastward, high pressure will build behind, and will allow the northeasterly trades to gradually strengthen through the weekend.

Moderate trades are expected later today and could become locally breezy in a few areas this weekend, as the remnants of a dissipating frontal boundary moves into Kauai on Saturday and over Oahu on Sunday. An increase of trade wind showers should be expected as the old frontal boundary moves through this weekend. Also a weak trough southeast of the Big Island could bring an increase of moisture over windward Big Island this weekend. Brief downpours will be possible, especially over the windward slopes during the afternoons.

Starting next week, a very unusual weather pattern is expected to develop over the state. A surface low is expected to develop to the west-southwest this weekend. This low pressure system will gradually track eastward next week. While tracking eastward, a deep upper level trough will develop just west of the state, and will transport a broad area of deep tropical moisture (with precipitable water values of up to 2.5 inches) over the state around Tuesday and Wednesday of next week.

While there are still some timing differences, there is potential for significant heavy rain and flash flooding towards the middle of next week. Due to the broad band of deep moisture, it is going to be difficult to pinpoint what areas will be impacted the most, and will highly depend on where the clusters of thunderstorms develop. While, heavy rain and flash flooding will be the main concern, some damaging winds will be possible with any thunderstorms.

Fire Weather: Moderate trade winds with mostly dry conditions over leeward areas will continue to produce low to moderate fire weather conditions through the weekend. Ample tropical moisture will move in from the southwest sometime beginning Monday night or Tuesday, bringing a threat for heavy rain through the middle of next week. As a result, fire weather concerns will be low next week. Inversion heights will range from 6,000 to 8,000 feet today, and will be relatively weak over the eastern end of the state due to a weak trough southeast of the Big Island.

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

 

Marine Conditions…as of Friday morning: Easterly trade winds will be at gentle to moderate strength as surface low pressure far north of Hawaii, and a nearby surface trough, weaken the local pressure gradient. Trades are expected to hold at current strength and shift out of the northeast this weekend, as high pressure far northwest of Hawaii pushes the low eastward. The weaker trade winds should persist Monday, but uncertainty increases on Tuesday, hinging on the potential development of a low southwest of the islands.

A small, medium-period northwest swell will arrive overnight and provide a small boost to surf along north-facing shores. A moderate, medium-period north-northwest swell will build late Saturday and peak around seasonal average on Sunday. As this swell declines on Monday, a long-period west-northwest swell will arrive, maintaining small to moderate surf into the middle of next week.

Small background level surf will prevail along south-facing shores. A small to moderate south-southwest swell is expected to boost surf to around seasonal average this weekend into early next week. Along east-facing shores, trade-wind swell will continue to decrease, though a small, medium-period northeast swell may maintain small surf through Saturday. Aside from wrapping north-northwest swell in exposed areas, east shore surf should remain below seasonal average much of next week.

 

>>> Highest Temperature Thursday, October 22, 2026 – 92 degrees at Seguin, TX


>>>
Lowest Temperature Thursday, October 22, 2026 – 17 degrees Davis, WV

 

Hawaiian Islands | Hawaii Landscape Photography | Scott Smorra


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


Caribbean Sea:
There are no active tropical cyclones


Gulf of America:
There are no active tropical cyclones

 

Northeast Pacific:

Tropical Cyclone 22E (Vance)…is located 590 miles south-southeast of Manzanillo, Mexico

VANCE CONTINUING TO INTENSIFY

According to the NHC advisory number 9

Vance is moving toward the northwest near 5 mph. A slow motion toward the north-northwest or northwest is expected to continue through the weekend. Maximum sustained winds have increased to 90 mph with higher gusts. Steady to rapid strengthening is expected through Saturday morning, and Vance is forecast to become a major hurricane. After that, slow weakening is forecast on Saturday night and Sunday. Hurricane-force winds extend outward up to 35 miles from the center and tropical-storm-force winds extend outward up to 205 miles. The estimated minimum central pressure is 979 mb (28.91 inches). A NOAA drifting buoy reported a minimum pressure of 988.5 mb (29.19 inches) several hours ago as it passed not far from the center of Vance.

cone graphic

 

Central North Pacific: There are no active tropical cyclones

>>> Western Central Pacific:

An area of low pressure is forecast to form near the International Date Line, several hundred miles west of Johnston Atoll late this weekend or early next week. Environmental conditions could support some slow development thereafter while the system moves generally eastward to east-northeastward.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 percent

 

Northwest Pacific Ocean:

Tropical Cyclone 29W (Champi)…is located approximately 53 NM southeast of Taipei, Taiwan

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Tropical Cyclone 30W (In-fa)…is located approximately 144 NM northwest of Kwajalein

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Southwest Pacific Ocean: There are no active tropical cyclones

 

North and South Indian Oceans / Arabian Sea: 

South Indian Ocean

Tropical Cyclone 02S (Agueda)…is located approximately 505 NM east of Dar Es Salaam, Tanzania – Final Warning

 

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



Interesting: 
Study Finds Air Quality Warnings Had Only a Modest Impact on Montrealers’ Movements

When Environment and Climate Change Canada (ECCC) urged Montrealers to limit outdoor activity during Canada’s worst wildfire smoke episodes, the city’s travel patterns shifted – but far less than public health officials might have hoped, according to a new McGill University study.

Researchers at the University’s Platial Analysis Lab examined how Montrealers were moving during 27 days, in 2022 through 2025, when smoke-related air quality advisories were in effect. They found that, on those days, bikeshare (BIXI) trips fell by 5.8 per cent, while bus ridership rose by 6.7 per and metro ridership rose by 4.7 per cent.

“While people moved from open-air travel into enclosed modes, which is what the bulletins ask for, the size of the change was small,” said study co-author Daniel Romm, a PhD candidate in the Department of Geography.

Read more at: University of McGill