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

 

The latest update to this website was at 941am Tuesday morning HST


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

1.65  Kilohana, Kauai
2.28  Lyon, Oahu
3.55  Puu Alii, Molokai
0.14  Lanai City, Lanai
2.75  Puu Kukui, Maui
2.21  Kawainui Stream, Big Island


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

22  Lihue, Kauai – NE
42  Kuaokala, Oahu – WNW 
20  Makapulapai, Molokai – E 
01  Lanai 1, Lanai – NE
30  Kealaloloa Rg, Maui – NNE
22  Upolu AP, 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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  Tropical Storm 06E (Fausto) will move by just to our north…Category 3 Hurricane Genevieve moving away from Mexico 

 

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 TS Fausto’s northeast of the Big Island

 

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

451am, it’s mostly clear here in upper Kula with calm winds, and a low temperature at my place of 60.5 degrees…with the relative humidity 84%

>>> For more information about Tropical Storm 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

 

>>> Highest Temperature Monday, July 27, 2026 – 119 at Death Valley, CA

>>> Lowest Temperature Monday, July 27, 2026 – 32 degrees at Truckee, OR

 

Hawaii’s Weather Highlights…as of Tuesday morning: Moderate to breezy trade winds produced by strong high pressure far northwest of the state, will back northeast ahead of approaching Tropical Storm Fausto into Tuesday. Shower activity will experience an increase.

As Fausto passes north of the Hawaiian Islands through Wednesday, diminishing winds for the islands could allow for sea breezes and heavy showers. A stable and drier, breezy trade wind weather pattern will return across the state from Thursday onward, as Fausto drifts westward away from the islands.

Weather Narrative..as of Tuesday morning: Satellite and radar imagery reveals low clouds and showers along windward and mountain locations, with some showers reaching leeward areas. As Tropical Storm Fausto passes north of the state the trades will be diminished, prompting the development of a sea breeze regime for the Big Island and possibly Maui County today.

Backed northeast trade winds are more likely to persist ahead of the cyclone for Oahu and Kauai, which will keep a more typical windward and mountain shower pattern. With the more saturated air, heavy rain showers will be possible in the afternoon/evening, for locations where the winds weaken enough to give way to the sea breeze.

On Wednesday, another day of relatively weak winds will lead to further potential for sea breezes and heavy rain showers, this time including Oahu and Kauai.

Subtle shifts in the forecast track are still possible which would affect the specific island by island impacts from Fausto. It is strongly encouraged that the public pay close attention to this passing storm system, as weather impacts over the Hawaiian Islands will evolve as Fausto gets closer.

High confidence Fausto impacts include: high surf warning for east facing shores through Wednesday. Lesser confidence impacts include: heavy rain threats through Wednesday.

By Wednesday night, Fausto continues on a west-northwest track and begins to gain distance from the islands, which will reintroduce moderate to breezy southeast to easterly winds into the forecast. From Thursday onward, a drier and more stable breezy trade wind pattern will return.

 

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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 Tuesday morning: Moderate to fresh NNE winds will be in place today as TS Fausto enters the far northeast offshore waters. Winds will become more north and decrease tonight as Fausto moves through the northeast and northern offshore waters. As Fausto passes by, winds will be light and variable over the coastal waters, followed by south, then southeast immediately in its wake.

As Fausto moves off to the northwest and high pressure builds to the north, east-northeast trades will build back in on Thursday, then strengthen to fresh to locally strong levels on Friday into the weekend. A Small Craft Advisory (SCA) is now in effect for the windward waters due to the east swell through tonight.

Nearshore buoys on the eastern side of the islands have shown a considerable increase with the medium and long period energy from Fausto. The surf is expected to peak today before dropping off Wednesday. A High Surf Warning for east facing shores is currently in effect through Wednesday afternoon. East shore surf will then 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.

A series of south swells will keep south shore surf near the summertime average through the week.

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

 

Rainbow Over Hawaii Skyline Stock Illustration - Illustration of view, beautiful: 367509812


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 530 miles southwest of the southern tip of Baja California

GENEVIEVE SLOWLY WEAKENING

According to the NHC Advisory number 17 

Genevieve is moving toward the west-northwest near 9 mph. A west-northwestward motion is expected during the next few days. Maximum sustained winds have decreased to near 125 mph with higher gusts. Genevieve is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Steady weakening is forecast over the next several days. Hurricane-force winds extend outward up to 45 miles from the center and tropical-storm-force winds extend outward up to 140 miles . During the night, the Mexican Navy automated weather station on Clarion Island reported sustained winds of 63 mph and a wind gust of 86 mph. The estimated minimum central pressure is 950 mb (28.06 inches).

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

 

Central North Pacific: 

Tropical cyclone 06E (Fausto)…is located about 265 miles northeast of Hilo, Hawaii

FAUSTO TO PASS NORTH OF THE HAWAIIAN ISLANDS TONIGHT THROUGH LATE WEDNESDAY …SIGNIFICANT SURF EXPECTED FOR THE HAWAIIAN ISLANDS OVER THE NEXT FEW DAYS

According to the NHC Advisory number 39 

Fausto is moving toward the west near 14 mph, and a generally west-northwestward motion is expected to continue for the next several days. On the forecast track, Fausto should pass north of the Hawaiian Islands tonight through late Wednesday. Maximum sustained winds are now near 60 mph with higher gusts. Weakening is forecast during the next couple of days, although Fausto is expected to remain a tropical storm as it passes north of the Hawaiian Islands. Tropical-storm-force winds extend outward up to 140 miles mainly to the northeast of the center. The estimated minimum central pressure is 1004 mb (29.65 inches).

 

>>> Northwest Pacific Ocean:  

Tropical cyclone 12W (Dolphin)…is located approximately 425 NM 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:  Nanoplastics Found in Antarctic Soils for the First Time

Scientists have found evidence of microplastics and nanoplastics in remote soils of Antarctica.

Sampling by an international team of researchers led by scientists at Lancaster University uncovered the presence of nanoplastics (less than a micrometer in diameter) in the soils of the McMurdo Dry Valleys – a particularly remote and ice-free region of Antarctica.

The study, published in the journal Nature Scientific Reports, shows plastics including polypropylene, polyethylene, PET, polystyrene, polyvinyl chloride and tire wear particles, were all found in McMurdo Dry Valleys soils during sampling in January 2023.

Read More at: Lancaster University