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

 

The latest update to this website was at 511am Monday morning HST


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

0.61  Mount Waialeale, Kauai
0.74  Lyon, Oahu
0.92  Puu Alii, Molokai
0.03  Lanai City, Lanai
1.38  Puu Kukui, Maui
1.56  Kawainui Stream, Big Island


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

16  Port Allen, Kauai – NE
29  Kuaokala, Oahu – NE 
24  Makapulapai, Molokai – ENE 
01  Lanai 1, Lanai – NE
40  Kealaloloa Rg, Maui – NE
32  Puuloa, 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 (out of operation). 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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  Hurricane 06E (Fausto) east, heading in our direction…although will weaken along the way / Category 4 Hurricane Genevieve moving away from Mexico 

 

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Variable low clouds…the leading edge of Fausto’s outer cloud/wind field, approaching from the east 

 

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

449am, it’s mostly clear here in upper Kula with calm winds, and a low temperature at my place of 53.5 degrees…with the relative humidity 801%

 

>>> Interesting weather web blog: Mauka Showers…Hurricane Fausto Heading Towards the Hawaiian Islands

 

We have Hurricane Fausto to the east of the Hawaiian Islands. It’s looking more and more likely that this system will move by just to our north. If this were to occur, we might see the associated cloud field bring some flooding showers our way Tuesday/Wednesday…along with variable winds later Tuesday into Wednesday. Additionally, we will see rising surf along the east facing shores…generated by Fausto. As we know, things often change going forward, so that I’ll keep abreast of these changes and make updates often.

In sum: Fausto should pass north of the Hawaiian Islands on Tuesday night into Wednesday, with the bulk of the strongest winds and heaviest rainfall remaining north of the islands.

>>> For more information about Hurricane Fausto and Hurricane Genevieve, please scroll down this page to the World-wide Tropical Cyclone Activity section

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time of arrival graphic

IR Satellite Image

 

>>> Highest Temperature Sunday, July 26, 2026 – 121 at Death Valley, CA

>>> Lowest Temperature Sunday, July 26, 2026 – 32 degrees near Kirk, OR

 

Hawaii’s Weather Highlights…as of Monday morning: A strong high pressure system far north of the Hawaiian Islands will continue to produce moderate to breezy trade winds, with periods of showers favoring windward mountain areas in the overnight and early morning hours. Hurricane Fausto remains on track to pass north of the Hawaiian Islands on Tuesday and Wednesday as a tropical storm. A drier and breezy trade wind weather pattern will return across the state from Thursday onward, as Fausto drifts westward away from the Hawaiian Islands.

Weather Commentary…as of Monday morning: Satellite and radar imagery shows low clouds and scattered showers moving in on the trades. Showers are primarily impacting windward and mountain spots with a few showers making it into leeward locations. High pressure northwest of the state will maintain trades today.

East of the state Hurricane Fausto continues moving west-northwest. Fausto is expected to track north of the state Tuesday into Wednesday. The environment ahead of Fausto grows more unfavorable on approach to the islands, and it will weaken into a tropical storm before arrival in the vicinity of the Hawaiian Islands.

That said, we should remain cautious at this stage, as even subtle southern shifts in the track or delayed weakening trends, may still produce changes to our island by island impacts. It is strongly encouraged that the public pay close attention to this passing storm system, as weather impacts over the Hawaiian Islands will evolve the closer Fausto gets.

High confidence Fausto impacts include: high surf possibly above warning thresholds for east facing shores today through Tuesday. A High Surf Advisory is already in effect for east facing shores through Wednesday, with the possibility of an upgrade to a warning. Lesser confidence impacts include: strong winds to around 40 mph may develop near and north of the low center, and possible heavy rain threats from Tuesday through Wednesday.

No time like the present to review your family hurricane preparedness plans, and ensure every household has at least a 14 day supply of food and water available if needed during this years active hurricane season.

As Fausto continues to move away from the state, a drier and more stable breezy trade wind pattern will fill in from Thursday onward.

 

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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 Monday morning: Locally breezy trade winds continue to prevail over the region, especially in the typically winder waters and channels around Maui County and the Big Island. Therefore, a Small Craft Advisory remains in effect for these areas through this afternoon. The fresh to locally breezy trades will gradually shift to the NNE and diminish through the middle of the week in response to what is currently Hurricane Fausto passing north of the islands. However, it is likely that the Small Craft Advisory will need to be expanded due to seas greater than 10 feet for windward waters. The trades will then return to fresh and strong levels late this week into the weekend as the remnants of Fausto continue off to the west-northwest away from the state and strong high pressure builds to the north.

The current long-period south swell will slowly decline for the next couple of days. The High Surf Advisory has been cancelled for south facing shores based on the latest buoy trends and guidance, though some borderline advisory-level surf cannot be ruled out at select top spots along south shores early this morning.

East facing shores will continue to support rough, choppy surf due to the locally breezy trade winds. Additionally, nearshore buoys on the eastern side of the islands have begun to show the long period forerunners of the new easterly swell. A High Surf Advisory for east facing shores is currently in effect through Wednesday afternoon. However, as energy from Hurricane Fausto builds, surf along east facing shores could reach warning levels by tonight through early Wednesday. A Coastal Flood statement may be also be needed during the peak of the large surf for vulnerable low-lying coastal roadways, docks, boat ramps, and other coastal infrastructure exposed to the large east swell. After a brief lull late Wednesday through Thursday, east shore surf will trend back up Friday into the weekend due to a combination of rising trade wind swell and a new long period east swell generated by Hurricane Genevieve.

Surf along N shores could also see some brief increase as Fausto (or its remnants) pass near the region Tuesday and Wednesday, then return to typical flat to tiny levels late Wednesday into the weekend.

 

Which Hawaii island is the best? They Are All Unique but Here's a litt – Wai?kea Hawaiian Volcanic Water | Store


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

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

>>> Caribbean Sea: There are no active tropical cyclones

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

>>> Gulf of America: There are no active tropical cyclones

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

 

Northeast Pacific:

Hurricane 07E (Genevieve)…is located about 520 miles south-southwest of the southern tip of Baja California

GENEVIEVE MOVING TOWARD THE NORTHWEST AS A POWERFUL CATEGORY 4 HURRICANE

According to the NHC Advisory number 13 

Genevieve is moving toward the northwest near 13 mph. A west-northwestward to northwestward motion with some decrease in forward speed is expected during the next couple of days. Maximum sustained winds have decreased to near 155 mph with higher gusts. Genevieve is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are likely today. Steady weakening is forecast tonight through the remainder of the week. Hurricane-force winds extend outward up to 45 miles from the center and tropical-storm-force winds extend outward up to 150 miles. The estimated minimum central pressure is 929 mb (27.44 inches).

Here’s the link to the National Hurricane Center (NHC)

 

Central North Pacific: 

Tropical cyclone 06E (Fausto)…is located about 580 miles east of Hilo, Hawaii

FAUSTO STILL A CATEGORY ONE HURRICANE…SIGNIFICANT SURF EXPECTED FOR THE HAWAIIAN ISLANDS OVER THE NEXT FEW DAYS

According to the NHC Advisory number 35 

Fausto is moving toward the west-northwest near 14 mph, and a general westward to west-northwestward motion is expected to continue for the next several days. Maximum sustained winds remain near 80 mph with higher gusts. Gradual weakening is forecast during the next several days. Hurricane-force winds extend outward up to 35 miles from the center and tropical-storm-force winds extend outward up to 140 miles. The estimated minimum central pressure is 986 mb (29.12 inches).

 

>>> Northwest Pacific Ocean:  

Tropical cyclone 12W (Dolphin)…is located approximately 601 NM east-southeast of Wake Island  

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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

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



Interesting:  Hawaii’s Mantle Plume Is Getting Hotter over Time

New research shows the Hawaiian mantle plume has gotten hotter by about 250°C (480°F) over the past 47 million years. Led by Earth scientists at the University of Hawaii at M?noa, the study published in Earth and Planetary Science Letters, reverses the long-held idea that hotspots start out very hot and progressively cool with time. Researchers also found that heat surges produced the two largest volcanoes along the Northwestern and Main Hawaiian Island chain.

The Hawaiian Ridge consists of 65 volcanoes spread over 3,500 km (2,179 miles) that were formed during the past 47 million years as the Pacific plate slowly moved over the Hawaiian hotspot, where a plume of molten material flows out of Earth’s crust. A team of researchers, led by Michael Garcia, Emeritus Professor of Earth Sciences in the UH M?noa School of Ocean and Earth Science and Technology, set out to evaluate hypotheses that might explain the 100-fold fluctuation in lava volume along this ridge. By examining olivine basalts from 16 volcanoes, the researchers assessed four testable causes, including changes in lithosphere thickness, magma source composition, rate of the Pacific plate movement and plume temperature.

“It was a major surprise to find such a strong, direct correlation between mantle temperatures and volcano size,” said Garcia. “Other potential explanations simply failed to explain the data.”

Read More: University of Hawaii