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

 

The latest update to this website was at 536pm Friday evening HST


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

0.16  Waiahi RG, Kauai
1.06   Moanalua RG, Oahu
0.20  Puu Alii, Molokai
0.00  Lanai
0.66  Ulupalakua , Maui
0.12  Lower Kahuku, Big Island


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

15  Puu Lua, Kauai – NE
23  Kuaokala, Oahu – NE
25  Molokai AP, Molokai – NE
31  Lanai 1, Lanai – NE
22  Kealaloloa Rg, Maui – NNE
30  Kealia Pond, Big Island – NNE


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




~~~ Hawaii Weather Narrative ~~~

 

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 an interesting weather web blog, Mauka Showers…Hawaii’s Upcoming Drought of 2027?

 

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

Weather Narrative…as of Friday evening: A surface trough just east of the state is visible on satellite imagery, with peripheral clouds and showers tracking into east-facing slopes of the Big Island. This feature will maintain enhanced cloud cover and isolated to scattered showers across windward Big Island and Maui through tonight, before drifting eastward and pulling its deeper moisture away from the state.

Across the broader region, the surface pressure gradient remains relaxed as a broad low to the north splits two highs, one anchored to its east and the other to its west. Consequently, light to moderate trades will persist through Monday, allowing a hybrid trade wind and localized land/sea breeze pattern to take hold. A relatively dry air mass will keep skies mostly clear to partly cloudy over the smaller islands, with only isolated windward showers moving in on the northeasterly flow. Meanwhile, high-level cirrus will continue streaming overhead from the west-southwest within a strong subtropical jet streak.

Remnants of a dissipating frontal boundary trailing from the northern low as it dips southeastward, will brush the western islands Saturday into Saturday night, providing a minor boost to the northeasterly trade wind speeds and windward showers across Kauai and Oahu. Farther west, a low will attempt to organize well west-southwest this weekend. The National Hurricane Center currently assigns this feature a low (20 percent) chance of developing into a tropical cyclone over the next 7-days.

Regardless of tropical development, the primary concern for Hawaii is an increasing risk of heavy rainfall leading to flash flooding, and isolated thunderstorms next week. This developing low and a large convergent band of deep tropical moisture to its east are expected to get swept up by a passing mid- to upper-level trough, and drawn across the island chain. Weather models continue to depict precipitable water (PW) values exceeding 2.5 inches over portions of the state late Tuesday through Wednesday, aligning with the strongest upper-level jet stream support for ascent.

However, significant forecast uncertainty remains regarding exact timing, rainfall amounts, and which locations will experience the heaviest totals. Current guidance leans toward heavy rain arriving as early as Tuesday and potentially lingering through Thursday. While large-scale winds are not expected to be hazardous, gusty winds may be possible within these heavy showers, or in any thunderstorms that may develop.

Fire Weather: Light to 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 at least Thursday. As a result, fire weather concerns will be low through most of next week. Inversion heights will range from 6,000 to 8,000 feet Saturday, and will be relatively weak over the eastern end of the state, due to a weak trough just east 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 evening: A surface low centered about 1000 NM north of islands will move to the southeast through Saturday and will stall roughly 800 to 900 NM northeast of Oahu late Saturday through Monday, keeping the subtropical ridge just north of the area rather weak. Trade winds will be at gentle to moderate strength during much of this time, though a brief period of fresh northeast winds may accompany a shallow band of showers moving over Kauai and Oahu late Saturday. An area of low pressure is expected to move over the islands from the southwest Tuesday and Wednesday, bringing variable winds and the potential for heavy showers and thunderstorms.

Small surf will persist along north shores through early Saturday. A moderate, medium-period north-northwest swell will build late Saturday and produce surf around seasonal average during its peak on Sunday. As this swell declines on Monday, a long-period northwest swell will arrive. This swell will generate moderate surf along north- and west-facing shores through Wednesday. A small north- northeast swell will be possible during the second half of next week.

Small background level surf will prevail along south-facing shores into early Saturday. A series of small overlapping south- southwest swells will push surf back to around seasonal average late Saturday into early next week. A larger south-southwest swell is possible Thursday and next Friday.

Along east-facing shores, wind swell energy will be low through much of the week, but a small medium-period northeast swell will maintain small surf through tonight. Surf along most east facing shores will be small through early next week, but areas exposed to wrapping northerly swells will experience periods of moderate surf late Saturday through Monday and again during the second half of next week.

 

>>> Highest Temperature Friday, October 23, 2026 – 91 degrees at Laredo, TX


>>> Lowest Temperature Friday, October 23, 2026 – 18 degrees at Mount Washington, NH

 

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 495 miles south-southeast of Manzanillo, Mexico

VANCE NEAR MAJOR HURRICANE STRENGTH

According to the NHC advisory number 11

Vance is moving toward the north-northwest near 7 mph, and this motion is expected to continue through the weekend. Maximum sustained winds are near 110 mph with higher gusts. Some additional strengthening is possible through tonight. However, gradual weakening is forecast to begin by Saturday. 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 965 mb (28.50 inches).

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 100 NM east of Taipei, Taiwan

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Tropical Cyclone 30W (In-fa)…is located approximately 139 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