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

 

The latest update to this website was at 1110am Sunday morning HST


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

1.60  Kilohana, Kauai
0.67  Lyon, Oahu
1.818  Puu Alii, Molokai
0.07  Lanai 1, Lanai
2.18  West Wailuaiki, Maui
2.75  Kawainui Stream, Big Island


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

21  Port Allen, Kauai – E
25  Kuaokala, Oahu – NE 
30  Makapulapai Molokai – E 
31  Lanai 1, Lanai – NE
33  Kealaloloa Rg, Maui – NE
27  Pali 2, Big Island – N 


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 / strengthening Hurricane Genevieve closer to Mexico 

 

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Variable low clouds 

 

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

615am, it’s mostly clear here in upper Kula with calm winds, and a low temperature at my place of 53 degrees…with the relative humidity 80%

 

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

 

We have Hurricane Fausto has crossed into our central Pacific now, 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 some localized winds. 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

cone graphic

time of arrival graphic

IR Satellite Image

 

>>> Highest Temperature Saturday, July 25, 2026 – 123 at Stovepipe Wells, CA

>>> Lowest Temperature Sunday, July 26, 2026 – 34 degrees near Old Station, CA

 

Hawaii’s Weather Highlights…as of Sunday morning: A strong high pressure system far north of the Hawaiian Islands will continue to produce moderate to breezy trade winds through Monday, with periods of showers favoring windward mountain areas in the overnight to early morning hours.

Hurricane Fausto remains on track to pass near the Hawaiian Islands on Tuesday and Wednesday. The latest forecast for Fausto shows a weakening trend to tropical storm strength, as it moves closer to the island chain. A drier and breezy trade wind weather pattern will return across the state Thursday onward, as Fausto drifts westward away from the Hawaiian Islands.

Weather Commentary…as of Sunday morning: A few bands of clouds will continue to drift into the islands on the trade winds today, producing brief showers mainly along windward mountain slopes.

East of the state Hurricane Fausto continues to move westward towards the Hawaiian Islands. Fausto remains on a high confidence track, keeping the center of the storm and the highest impacts passing north of the state. Additionally, the environment ahead of Fausto grows more unfavorable on approach to the islands, and so Fausto will weaken into a tropical storm before arrival in the Hawaii region.

That said, we should remain cautious at this stage, because even a subtle southern shift in the track or delayed weakening trends, may still produce changes to our island by island impacts. We should pay close attention to this passing storm system, as weather impacts over the Hawaiian Islands early in the upcoming week will likely evolve over time.

High confidence Fausto impacts…High surf possibly above warning thresholds for east facing shores from Monday through Tuesday. 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.

A drier and more stable breezy trade wind pattern will fill in across the state from Thursday onward, as Fausto continues to journey westward away from the Hawaiian Islands.

 

https://www.weather.gov/images/hfo/graphics/npac.gif


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 Sunday morning: Fresh to locally strong trades will persist today then gradually shift to the NNE and diminish through the middle of the week, in response to Hurricane Fausto passing north of the islands. The trades will then ramp back up to fresh and strong levels later in the week into next weekend, as Fausto continues off to the west-northwest away from the state, while strong high pressure builds north of the islands. A Small Craft Advisory remains in effect for the windier waters around Maui and the Big Island through 6pm this evening.

The current long-period south swell will hold steady at advisory levels, then begin a slow decline. South shore surf will remain elevated above the summertime average through the middle of the week, before trending closer to or perhaps a bit below normal by next weekend. A High Surf Advisory is now in effect for south facing shores through 6pm this evening.

Locally strong trade winds will continue to support rough surf above the seasonal average along east facing shores today. Trade wind swell will then decline, due to diminishing trades tonight through the middle of the upcoming week. A long period swell from Hurricane Fausto will build today and Monday, then peak Tuesday into early Wednesday. This swell is forecast to produce advisory level surf along east facing shores as early as Monday, followed by potential for warning level surf as it peaks on Tuesday into early Wednesday.

After a brief lull late Wednesday through Thursday, east shore surf will trend back up Friday into next weekend, due to a combination of rising trade wind swell, and a new long period east swell associated with Tropical Storm Genevieve moving in.

Surf along north shores remains flat to tiny today. Some increase is expected as Fausto or its remnants pass near the region Tuesday and Wednesday, with north shore surf returning to typical flat to tiny levels late Wednesday into next weekend.

 

The best Hawaiian Islands and where to stay in 2025


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 Manzanillo, Mexico

MAJOR HURRICANE GENEVIEVE CONTINUING TO RAPIDLY STRENGTHEN

According to the NHC Advisory number 10 

Genevieve is moving toward the west-northwest near 14 mph. A west-northwestward to northwestward motion with some decrease in forward speed is expected during the next few days. Maximum sustained winds have increased to near 140 mph with higher gusts. Genevieve is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Continued strengthening is expected during the next day or so. Genevieve is then forecast to start weakening by the middle of this week. Hurricane-force winds extend outward up to 45 miles from the center and tropical-storm-force winds extend outward up to 195 miles (315 km). The estimated minimum central pressure is 947 mb (27.97 inches).

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

 

Central North Pacific: 

Tropical cyclone 06E (Fausto)…is located about 910 miles east of Hilo, Hawaii

RECON FINDS FAUSTO STILL A HURRICANE WITH 85 MPH WINDS

According to the NHC Advisory number 32 

Fausto is moving toward the west 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 85 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 150 miles. The minimum central pressure estimated by aircraft dropsonde data is 984 mb (29.06 inches).

 

>>> Well West-southwest of Hawaii:

Invest 92C

Showers and thunderstorms associated with a broad area of low pressure located well west-southwest of the Hawaiian Islands continue to show signs of organization. Environmental conditions appear conducive for additional development and a tropical depression is expected to form over the next day or so as this system moves generally westward at 10-15 mph. This system is crossing the International Date Line and entering the western Pacific basin. Therefore, this is the last Tropical Weather Outlook issued by the National Hurricane Center on this system. Future information of this system can be found in products issued by the Joint Typhoon Warning Center and the Japan Meteorological Agency.

* Formation chance through 48 hours…high…90 percent
* Formation chance through 7 days…high…90 percent

 

>>> Northwest Pacific Ocean:  

Tropical cyclone 11W (Noul)…is located approximately 40 NM north-northeast of Hong Kong – Final Warning

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https://www.metoc.navy.mil/jtwc/products/11W_251800sair.jpg

 

>>> There’s an area of disturbed weather being referred to as Invest 92C, which is located approximately 597 NM northeast of Majuro.

Animated enhanced infrared satellite imagery (eir) depicts an area of consolidating deep convection in the northern and eastern peripheries, with curved flaring convective bands to the west-northwest of the low-level circulation center (llcc). The strongest winds are primarily confined to the northern semicircle with relatively weaker winds to the south.

Environmental analysis reveals favorable conditions for development with low vertical wind shear (15 knots or less), strong upper-level outflow aloft, and warm (28-29c) sea surface temperatures.

Global models depict 92C continuing to consolidate over the next 12-24 hours with guidance showing a generally westward track.

Current wind speeds are listed at 25 knots with the system beginning to move over a more conducive environment for tropical cyclone development.

Maximum sustained surface winds are estimated at 23 to 28 knots.

The potential for the development of a significant tropical cyclone within the next 24 hours remains high.

 

>>> 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:  Predicting Where Wildfire Smoke Will Go Next

In recent summers, wildfire smoke has been inescapable across Wisconsin, drifting south from Canada and leading to long stretches of poor air quality. Whether that smoke clears or lingers is often influenced in part by the atmospheric boundary layer — the lowest part of the atmosphere, where airborne particles mix and move.

At night or during cooler weather, the boundary layer compresses toward the ground, sometimes to heights below 100 meters above the surface. Under these conditions, pollutants, including smoke, can become trapped near the surface, increasing exposure and health risks. During the day, as the ground warms, the boundary layer rises and can reach heights of 2,000 meters, enhancing vertical mixing and the dispersion of pollutants. Tracking these changes in near real time is critical for predicting how pollution levels shift and how they may affect public health.

In a new study, University of Wisconsin–Madison statistics professor Chris Geoga and atmospheric scientist Paytsar Muradyan of Argonne National Laboratory are tackling this challenge using machine learning and high-resolution data. Using data from the Department of Energy’s CROCUS Urban Integrated Field Laboratory — a large-scale collaboration led by Argonne — the team developed a model that can estimate boundary layer height in near real time. The work is an important step toward helping public health officials better anticipate how air quality conditions, including smoke impacts, may change — and provide earlier warnings to the public.

Read more at: University of Wisconsin-Madison