Glenn James

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

 

The latest update to this website was at 520am Monday morning HST


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

0.10  Mount Waialeale, Kauai
0.03  Kahuku TA, Oahu
0.00  Molokai
0.00  Lanai
0.03  Kula AG, Maui
1.30  Waiaha Stream, Big Island


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

10  Lawai, Kauai – E
12  Palehua, Oahu – NE
10  Molokai 1, Molokai – SE
24  Kamehamenui 1, Maui – NE
14  Lalamilo, 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 (currently out of service). 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 far 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




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Hawaii Weather Narrative
~~~

 

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

441am, it’s clear here at my place, the low temperature was a cool 53 degrees, relative humidity is 79%…with calm winds

 

Hawaii’s Weather Highlights…as of Monday morning: Light to moderate trade winds will prevail, allowing sea breezes to develop in sheltered leeward areas today. A brief increase in windward showers is expected tonight into Tuesday, especially for the easternmost islands. Moderate trade winds will begin building back in during the second half of the week, becoming locally breezy again by the weekend.

Weather Narrative…as of Monday morning: Radar and satellite imagery shows a mostly to partly cloudy sky with a few isolated light showers going on across the state. A weak low in the mid and upper levels is located just east of the Big Island. Over the next few days, this feature will linger and then move off to the northeast, with little effect on island weather.

However, an area of enhanced moisture associated with a trough east of the islands will make its way westward, reaching the eastern end of the state later today. As this feature quickly moves through, windward showers are anticipated to increase, especially for the Big Island and Maui. The remaining islands may see a slight increase in windward and mauka showers as well.

By Wednesday, moderate trades will build back into the area, strengthening to become locally breezy by the end of the week. Showers will generally favor windward and mauka areas throughout the rest of the week, especially during the overnight and morning hours. An additional band of moisture approaching from the east could bring another increase in showers late this week into the weekend.

Fire Weather:  Light to moderate trade winds will continue for the first half of the week. Dry air will bring relative humidity levels down to near-critical values for parts of the state through this afternoon, but winds will be light. Inversion heights range from 4,000-11,000 feet.

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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: Moderate to locally fresh trade winds continue through Tuesday, before decreasing by mid-week into the light to moderate range. Slight day to day fluctuations are expected, then trades are expected to strengthen towards the end of the week, as high pressure builds north of the area.

A long-period south swell will hold, producing elevated surf along south and west-facing shores, but it will remain below advisory levels. South shore surf will decline gradually Tuesday into Wednesday, but a new long-period south swell arriving late Wednesday will provide another rise in surf for Thursday and Friday.

A small, long-period northwest swell will arrive this afternoon and peak Tuesday into Wednesday. This swell is expected to boost north shore surf to moderate levels. A moderate mid period north-northwest swell is possible by the end of the week into the weekend, depending on the evolution of a projected low in the north Pacific. However, confidence is low given differences in model solutions with this feature.

Surf along east-facing shores will remain small, as local winds remain fairly weak with only slight variations each day. Small, moderate-period west and east swells generated by multiple Pacific tropical cyclones, continue to move through the islands through the day.

 

>>> Highest Temperature Sunday, October 11, 2026 – 98 degrees at Rio Grande Village, TX


>>>
Lowest Temperature Sunday, October 11, 2026 – 11 degrees near Kirk, OR

 

Hawaii Vibes ?? >>> for some epic landscapes from low to high around the island of Oahu ? • • • • • #landscape #hawaii #oahu #photography #nature


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

>>> Eastern Tropical Atlantic:

An elongated area of low pressure centered a few hundred miles west of the Cabo Verde Islands continues to produce a large but disorganized area of showers and thunderstorms, which are occurring on the east side of the low, extending toward the westernmost Cabo Verde Islands. Environmental conditions appear, at best, marginally conducive for any development of this system during the next day or two before upper-level winds become too strong for any further development. Regardless, heavy rainfall is expected to continue for the next day or two across western portions of the Cabo Verde Islands, and some flooding is possible there as the system moves slowly northward to north-northwestward.

* Formation chance through 48 hours…low…20 percent
* Formation chance through 7 days…low…20 percent 


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 215 miles south of Mazatlan, Mexico

SIMON CONTINUES MOVING SLOWLY NORTHWESTWARD OFFSHORE OF MEXICO…DANGEROUS WINDS EXPECTED FOR A FEW MORE HOURS WITH FLOODING RAINS TO CONTINUE ALONG THE COAST

According to the NHC advisory number 21 

Simon is moving toward the northwest near 3 mph and this general motion is expected to continue into early Tuesday. A gradual turn toward the northeast is forecast thereafter, and Simon is expected to approach the west-central Mexico coastline on Wednesday into Thursday. Maximum sustained winds have decreased to near 110 mph with higher gusts. Some additional weakening is forecast today, but Simon could re-intensify some on Tuesday and Wednesday and is expected to remain a hurricane through mid-week. Rapid weakening is likely after Simon moves inland late this week. Hurricane-force winds extend outward up to 15 miles from the center and tropical-storm-force winds extend outward up to 60 miles. The estimated minimum central pressure is 962 mb (28.41 inches).

 

>>> South of southern Mexico:

Invest 93E

A broad area of low pressure located several hundred miles south-southwest of the coast of Guatemala continues to produce disorganized showers and thunderstorms. This system is gradually becoming better defined, and environmental conditions are forecast to be conducive for further development. A tropical depression is expected to form well south of southern Mexico in the next two days while the system moves generally west-northwestward at around 10 mph.

* Formation chance through 48 hours…high…80 percent
* Formation chance through 7 days…high…90 percent

 

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 27W (Koguma)…is located approximately 503 NM east-southeast of Yokosuka, Jpan

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Tropical Cyclone 28W…is located approximately 317 NM northeast 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: 
New Framework Developed for Moving Endangered Species to Safer Locations

A new framework designed to guide one of the hardest decisions in conservation—whether to move a species outside its historical range to save it from extinction—has been published in Conservation Science and Practice, capping a multi-year, Pacific-wide effort in which the University of Hawaii at M?noa played a central supporting role.

The framework helps managers to decide whether a “conservation introduction” that moves a plant or animal outside its historic range is the right call, and how to do it responsibly.

Professor Melissa Price with College of Tropical Agriculture and Human Resilience (CTAHR)’s Department of Natural Resources and Environmental Management (NREM) and a co-author of the paper, served as a co-principal investigator alongside lead investigator Mark W. Schwartz of the University of California, Davis and the U.S. Fish and Wildlife Service (USFWS) Pacific Region. Price, UH M?noa graduate students and others helped facilitate community engagement, gathering input from more than 250 people across the Pacific region.

Read More: University of Hawaii

Image: Alae ‘ula