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

 

The latest update to this website was at 106pm Thursday afternoon HST


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

0.77  Wailua, Kauai
0.59  Punaluu Stream, Oahu
0.84  Honolimaloo, Molokai
0.01  Lanai 1, Lanai
4.01  West Wailuaiki, Maui
2.50  Piihonua, Big Island


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

15  Puu Lua, Kauai – NE
31  Palehua, Oahu – NE
31  Makapulapai, Molokai – ESE
35  Lanai 1, Lanai – NE
46  Kealaloloa Rg, Maui – NNE
43  Puuloa, Big Island – NW


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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 Thunderstorms south in the deeper tropics


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Clear to variable cloudy over the island chain 

 

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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 Thursday comments:  I’m at home here in upper Kula, Maui, Hawaii

445am, it’s partly cloudy here at my place, the low temperature was 58 degrees, relative humidity is 81%…with calm winds

917am, clouds along the windward side of east Maui, mostly sunny elsewhere

 

Hawaii’s Weather Highlights…as of Thursday afternoon: A high pressure system far northwest of the Hawaiian Islands will slowly drift from west to east over the next few days. This passing system will increase easterly trade winds into the moderate to breezy range lasting into the middle of next week.

Brief pulses of showers are forecast with three passing easterly troughs during this time. Increasing showers will favor the windward mountain areas in the overnight to early morning hours starting Friday night and lingering into next Tuesday morning. The strongest of these three waves will pass through the islands from Sunday night into Tuesday morning.

Short Term Update: Isolated to scattered trade showers continue, mainly across windward and mauka areas, but a few are carrying over to leeward areas. These showers should diminish in coverage and intensity in most areas heading into the afternoon. The exception will be on the Big Island, where windward showers will continue, and Kona showers will develop this afternoon as a weak easterly wave moves through.

Weather Narrative…as of Thursday afternoon: Satellite imagery shows a lingering band of unstable showers riding into the windward mountain slopes of each island on the trade winds. Periods of windward and mountain showers should be expected for the typical areas, more isolated showers are possible for drier leeward locations. These enhanced trade wind showers will diminish in coverage a few hours after sunrise, due to the typical diurnal day time stability trends.

Farther to the east, the satellite imagery verifies three short waves moving towards the islands within the easterly trade winds. These easterly waves will bring pulses of showers to all islands, as they march across the island chain from Friday into early next week.

In the big picture, we continue to track a high pressure system currently located far northwest of the Hawaiian Islands drifting eastward over the next few days. This migratory high will increase easterly trade winds into the moderate to breezy range lasting into next week Tuesday. Periods of wet weather remain in the weather forecast for this weekend, as the three low level easterly waves will ride into the islands on the strengthening trade winds. Three pulses of higher shower coverage will favor Friday night, then late Saturday, and the last one unfolding from Sunday through Monday. The last of these easterly short wave troughs might be the strongest of the three, with enhanced showers extending over the typically drier leeward areas at times.

Forecasting rainfall amounts with these waves is always challenging due to variations in arrival timing and their intensity relative to each island. A larger degree of uncertainty remains in the long range forecast from next week Wednesday onward. Both the American (GFS) and European (ECMWF) global forecast models continue to show diverging solutions for a passing middle latitude trough, as the trough digs in and potentially approaches the islands from the northwest.

The GFS model solution deepens this trough into a large cut off low north of Kauai, and secondary upper low deepens northeast of the Big Island from Thursday into Saturday. The GFS shows a wetter solution for sure, as upper level cold temperatures and additional divergence aloft will lift inversion heights, and produce a surface trough likely prompting southeasterly to southerly winds near the islands at some point.

However, the ECMWF model presents a much more stable solution with two weaker upper lows north of the state. This european model solution will produce more stable conditions, as compared to the GFS model, with a typical trade wind shower pattern setup. We should continue to closely monitor this long range forecast time period for potential island by island weather impacts, as the model solutions begin to converge and the weather forecast becomes clearer over the next several days. Stay tuned.

Fire Weather:  A high pressure system far north of the islands drifting eastward, will produce moderate to breezy trade winds for the next few days. Minimum relative humidity levels will for most areas remain out of critical fire threshold ranges. The stronger trade winds will mainly impact higher elevation areas with even higher minimum humidity levels. Subsidence temperature inversion heights today near Maui and the Big Island will drop into the 6,000 to 7,000 foot elevation range this afternoon.

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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 Thursday afternoon: Surface high pressure far northwest of the islands will move closer today, then build as it shifts north and then northeast of Hawaii on Friday. As a result, trade winds will gradually increase to fresh to locally strong levels over the next couple of days. A Small Craft Advisory (SCA) is in effect for the typically windy waters around Big Island and Maui. A stronger surface high will arrive far north of the islands late Saturday and Sunday, likely increasing trade winds further, which may necessitate an expansion of the SCA to additional waters. Elevated trade winds will persist into early next week.

A small rise in the northwest swell will bring another peak of small surf to north and west-facing shores today, that will fade tonight before a moderate north-northwest swell arrives Friday and continues through the weekend. Surf along north and west-facing shores should top out around seasonal average during the peak of the swell Friday afternoon and Saturday, then slowly decline late Saturday and Sunday, as the dropping swell shifts more northerly, and a smaller overlapping northwest swell arrives. Both swells will fade early next week.

A new long-period south swell builds today and may push surf along south-facing shores back above seasonal average through Friday. The swell will slowly decline Saturday through early next week.

Surf along east-facing shores will begin to increase this afternoon into tonight as trade winds strengthen over the region. Rough trade wind swell will produce east shore surf above seasonal average Saturday through early next week.

 

>>> Highest Temperature Wednesday, October 14, 2026 – 102 degrees at Rio Grande Village, TX


>>> Lowest Temperature Wednesday, October 14, 2026 – 10 degrees at White Sulphur Springs, MT

 

Hawaii - Landscape pictures - Stefan Hefele 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 


Caribbean Sea: There are no active tropical cyclones


Gulf of America: There are no active tropical cyclones

 

Northeast Pacific

Tropical cyclone (Simon) is located about 180 miles west-southwest of Cabo Corrientes, Mexico

SMALL SIMON SLOWLY WEAKENING AS IT DRIFTS NORTHWESTWARD…NOW FORECAST TO BECOME A REMNANT LOW IN A COUPLE OF DAYS

According to the NHC advisory number 34 

Simon is moving toward the northwest near 1 mph. A faster northwestward motion is forecast to begin by Friday and continue through the weekend. Maximum sustained winds have decreased to near 50 mph with higher gusts. Gradual weakening is expected during the next few days, and Simon is forecast to become a post-tropical remnant low by this weekend. Simon is a small tropical cyclone. Tropical-storm-force winds extend outward up to 45 miles from the center. The estimated minimum central pressure is 999 mb (29.50 inches).

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Tropical cyclone 21E (Trudy) is located about 405 miles south-southeast of Manzanillo, Mexico

HURRICANE WATCH AND TROPICAL STORM WARNING ISSUED FOR PORTIONS OF THE COAST OF MEXICO…TRUDY EXPECTED TO RAPIDLY INTENSIFY

According to the NHC advisory number 10 

Trudy is moving toward the north-northwest near 6 mph. This motion is expected to continue through Friday, followed by a turn toward the northwest Friday night or Saturday. On the forecast track the center of Trudy will approach the coast of southwestern and west-central Mexico on Saturday. Trudy has changed little in strength during the past few hours, and maximum sustained winds are near 90 mph with higher gusts. Rapid intensification is forecast to resume tonight, and Trudy is forecast to become a major hurricane Friday or Friday night. Hurricane-force winds extend outward up to 25 miles from the center and tropical-storm-force winds extend outward up to 105 miles. The estimated minimum central pressure is 978 mb (28.88 inches).

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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 28W…is located approximately 164 NM south-southwest of Iwo To – Final Warning

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Tropical Cyclone 29W (Champi)…is located approximately 692 NM east of Andersen AFB

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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:  Daily Exercise May Be Key to Better Sleep, New Study Finds

New research from The University of Texas at Austin suggests that exercising more frequently — ideally every day — could improve sleep quality, particularly the kind of deep, restorative sleep that supports better mood and mental health.

The study, published in the Journal of Physical Activity & Health, analyzed data from UT students who wore Fitbits for several months. Unlike earlier research that focused on total exercise time, this study looked at how often people exercised.

“We wanted to know whether it matters if someone spreads out their exercise over the week versus doing it all at once, like a ‘weekend warrior,’” said Benjamin Baird, a research assistant professor of psychology in the College of Liberal Arts. “And for sleep health, frequency does seem to matter.”

Chris Corral, who recently earned a master’s degree in health behavior and health education from UT and co-led the study, explained the research builds on earlier findings linking exercise to non-REM, or deep sleep. This deep sleep, especially early in the night, is when the body does much of its physical and mental recovery.

Read More: University of Texas at Austin