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

 

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


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

2.95  Mount Waialeale, Kauai 
1.41  Kahana, Oahu
0.02  Puu Alii, Molokai
0.00  Lanai
0.06  Hanaula, Maui
0.63  Kealakekua, Big Island


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

13  Lawai, Kauai – ENE
21  Oahu Forest NWR, Oahu – E
20  Anapuka, Molokai – NE
24  Kealaloloa Rg, Maui – NNE 
24  Waikoloa 2, 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. 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 Nolo west-northwest of Hawaii…Hurricane Rachel near Mexico


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Variable clouds are present 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 Saturday comments:  I’m at home here in upper Kula, Maui, Hawaii

446am, it’s mostly clear here at my place, the low temperature 53 degrees, relative humidity is 84%…with calm conditions

610am, it’s partly cloudy with a mix of high and low level clouds, and the vog is mostly all gone thank goodness! If the winds turn southeast, as expected, again later next week, we could see the volcanic haze returning then.

708am, it’s turned mostly clear, which should lead the way into a very nice, early autumn weekend.

1256pm, sunny to partly sunny here in Maui County, with the returning trade winds having ventilated the vog out to sea southwest


Hawaii’s Weather Highlights…as of Saturday afternoon: As Hurricane Nolo continues to pull farther west of the state, a subtropical ridge will gradually build back across the Islands from the north through early next week. This will result in the more typical east-northeasterly trades with a drier, more stable airmass this weekend through Tuesday. Shower activity (coverage) during this time will become more limited, confined to favored windward and mountain areas.

Short Term Update: The long lasting period of moist southeast wind flow has finally ended, and the mild mannered moderate to breezy trades will continue through Tuesday. Winds will increase Sunday into early Monday, as a weak tropical disturbance advances westward south of the area. However, nothing more than a modest coverage of windward and mauka showers is expected.

Attention for mid-week turns to a quick change from active tropics, to a very early wet season type of system. A deep trough extending from the mid-latitudes into the subtropics, is forecast to develop during the first half of the week. Deep layer flow veers to the south-southeast in advance of this trough, drawing deep tropical moisture northward as early as Wednesday. A surface low will develop around 30N latitude northwest of Kauai, with the western half of the island chain most likely to receive meaningful rainfall. While guidance varies on important details, such as the position of the developing low and how long it persists, the end result seems to be an emerging threat for heavy rain and flash flooding one way or another during the second half of the upcoming week.

The GFS model allows trades to build in considerably faster, seemingly in response to its development of a suspiciously compact and intense surface low which wraps westward under the upper low. The EC model appears more realistic at this time, and favors a flooding threat that could persist for a few days over Kauai and potentially Oahu. Forecast soundings suggest that while the dry slot will likely become established west of the islands, dry air entrainment within mid-level SW wind flow may be a limiting factor.

Weather Narrative…as of Saturday afternoon: Looking at satellite and radar imagery, we see that isolated showers are occurring along windward and mauka spots across the state. High pressure is expected to build back over the state now, dropping humidity levels and ushering in generally fair weather through Sunday.

Early next week, trade winds will weaken in response to an approaching surface trough, and then will weaken further heading into mid-week, as broad troughing develops northwest of the state. In this lighter wind flow, land and sea breezes will develop with clearing expected overnight, and clouds and a few showers over leeward and interior areas each afternoon.

Fire Weather:  Drier air is expected over the weekend as light to moderate east-northeasterly trades return. Winds are expected to decrease early to mid-week next week. Isolated showers will favor windward and mauka areas overnight into the early morning hours. Fire weather conditions will remain below critical threshold for both wind and humidity levels. Temperature inversion heights are around 5,000-7,000ft.

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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 Saturday afternoon: Gentle to fresh east to northeast trade winds fill back in today as Hurricane Nolo accelerates westward away from the Hawaiian Islands, and high pressure strengthens gradually to the north. A Small Craft Advisory has been issued, in effect beginning tonight, when locally strong trades are forecast to develop for the typically windy waters and channels.

Locally strong trades may persist into early next week before high pressure to the north weakens again, and winds start to diminish. By the middle of next week, troughing developing northwest of the islands may cause winds to veer out of the southeast once again.

A small background south swell will keep surf mostly steady along south facing shores through this weekend. A new small, long-period south swell, originating from a large fetch of gale force winds southeast of New Zealand earlier this week, is forecast to arrive beginning Sunday, and peak Monday through Wednesday. This will push surf to slightly above seasonal averages for the first half of next week.

A small rise in surf along north-facing shores will decrease today as a small, short period north swell fades. Another small rise in north shore surf is possible early next week as a small, medium-period northwest swell arrives late Sunday and peaks on Monday. This will be followed by a slightly larger long-period northwest swell peaking on Wednesday, giving a good boost to north shore surf for mid-week. Surf along east facing shores will increase and become more choppy through tonight, as easterly trades build back into the region.

 

>>> Highest Temperature Friday, October 2, 2026 – 111 degrees near Tecopa, CA


>>> Lowest Temperature Friday, October 2, 2026 – 22 degrees at Peter Sinks, UT

 

Hawaii Flowers Beach Images – Browse 127,834 Stock Photos, Vectors, and Video | Adobe Stock


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 cyclone


Caribbean Sea: There are no active tropical cyclones


Gulf of America: There are no active tropical cyclones

 

Northeast Pacific

Tropical cyclone 18E (Rachel) is located about 270 miles southwest of the southern tip of Baja CA

RACHEL CONTINUES MOVING SLOWLY WEST-NORTHWEST

According to the NHC advisory number 27 

Rachel is moving toward the west-northwest near 5 mph (7 km/h), and this slow motion is expected to continue through tonight. A west to west-northwest motion is then expected Sunday through the middle of next week, with a gradual increase in forward speed. Maximum sustained winds are near 80 mph (130 km/h) with higher gusts. Some weakening is forecast during the next day or so, with some slight restrengthening possible on Monday. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure is 977 mb (28.85 inches).

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>>> South of Southern Mexico:

An area of low pressure is forecast to form late this weekend or early next week south of the southern coast of Mexico. Thereafter, environmental conditions appear favorable for gradual development, and a tropical depression is likely to form during the middle to latter portion of next week while the system moves slowly west-northwestward to northwestward.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…high…80 percent

 

Central North Pacific:

Tropical Cyclone 15E (Nolo) is located about 220 miles southwest of Maro Reef

NOLO CONTINUES TO ACCELERATE TOWARD THE WEST AS A MAJOR HURRICANE …EXPECTED TO CROSS THE INTERNATIONAL DATE LINE ON SUNDAY

According to the NHC advisory number 52

Nolo is moving faster toward the west near 17 mph (28 km/h). A mainly westward motion with some additional increase in forward speed is expected during the next few days. On the forecast track, the center of Nolo will continue to move through the Papahanaumokuakea Marine National Monument but remain just south of the Northwestern Hawaiian Islands west of Maro Reef. Nolo is expected to cross the International Date Line by Sunday midday Hawaiian Time. Maximum sustained winds are near 115 mph (185 km/h) with higher gusts. Nolo is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Fluctuations in intensity are possible today, but Nolo could still strengthen through Sunday. Gradual weakening is likely to begin on Monday. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure is 959 mb (28.32 inches).

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Northwest Pacific Ocean:

Tropical Cyclone 26W(Choi-Wan)…is located approximately 340 NM north of Saipan

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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:  Digging Deep, Researchers Find High-Altitude Glacier Endured Last Ice Age

Ancient ice trapped within an ice cap in Northwestern Tibet appears to preserve fragments from the last ice age, extending Earth’s glacial record by over 100,000 years and making them the oldest ice cores ever recovered from the region, according to a new study.

The analysis, comparing ice cores drilled from the Guliya Plateau in 1992 and 2015, shows that both samples contained similar oxygen isotope patterns, suggesting that the environmental signals they contain are consistent and reproducible.

“Reproducibility of the records within a given ice cap is extremely important,” said Lonnie Thompson, lead author of the study, professor of earth sciences and senior research scientist at the Byrd Polar Research Center at The Ohio State University. “If you get an identical record a quarter of a century later, it can tell you a lot about the behavior of the ice over time.”

Read More: Ohio State University