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

 

The latest update to this website was at 503am Tuesday morning HST


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

0.62  N Wailua Ditch, Kauai
0.13  Punaluu Stream, Oahu
0.01  Puu Alii, Molokai
0.00  Lanai
0.01  West Wailuaiki, Maui
0.01  Honolii Stream, Big Island


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

22  Puu Lua, Kauai – NE
18  Kii, Oahu – SE
22  Makpulapai, Molokai – ESE
17  Na Kula, Maui – ENE
17  South Point, 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-southwest of Hawaii 


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Variable clouds are present over the island chain…lots of clear skies too 

 

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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

540am, it’s totally clear here at my place, with the low temperature 53 degrees, relative humidity is 78%…with calm conditions


Hawaii’s Weather Highlights…as of Tuesday morning: Moderate to locally breezy trade winds will veer from the southeasterly direction today, with a gradual weakening trend for most islands except for Kauai and Niihau, where some increasing winds are expected to develop this afternoon into the Wednesday, as Nolo reaches the closest point of approach to both islands.

Clouds and showers will increase into Thursday as Nolo passes to the west, pulling up deep tropical moisture along the east side of the storm increasing showers over Niihau, Kauai and Oahu. Nolo moves away to the northwest by this weekend, with drier easterly trade winds building back in across the Hawaii area.

Weather Narrative…as of Tuesday morning: Hurricane Nolo remains on a northerly track, forecast to pass roughly 300 miles west of Kauai. Strong vertical wind shear continues to weaken Nolo, which is forecast to drop down to tropical storm strength over the next 36 to 48 hours. The main threats with Hurricane Nolo over the next few days will remain the potential for locally heavy rain bands that may develop, and high surf along south facing shores of Kauai County.

Deep tropical moisture riding up the eastern flank of Nolo will increase showers later today for Niihau and Kauai, even reaching Oahu by tonight. These showers may become heavy at times and produce higher amounts of rainfall along south and southeast mountain slopes. At this time, it looks like there could be advisory level flooding potential for Kauai County, as Nolo passes west of the islands.

Drier and more stable air returns to the western islands by Friday, as the upper level ridge builds back in and light to moderate easterly trades return improving weather conditions statewide through Sunday. Brief passing showers are possible, mainly during the overnight to early morning hours during this time period.

By Monday a weak low pressure system drops into area, and deepens several hundred miles northeast of the Big Island. Northeasterly winds along the western flank of the surface low will drive a convergence cloud band into the Hawaiian Islands from the north early next week. This cloud band will likely bring a several day period of enhanced shower trends to all islands from Monday into Wednesday. These clouds and showers may linger near the Big Island through the end of next week. Higher rainfall amounts will mainly impact the northeastern slopes of Mauna Kea, and include the communities surrounding Hilo.

Fire Weather:  Wind speeds for most areas will decrease over the next 24 hours. However, wind speeds for Kauai County will increase into the breezy range with higher gusts through Wednesday, as Hurricane Nolo passes roughly 300 miles to the west of the islands. Nolo`s passage will boost humidity levels, decreasing critical fire concerns. Subsidence inversion heights near Maui and the Big Island today will remain between the 5,500 and 6,500 feet elevation level.

 

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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: Under the influence of Hurricane Nolo, now located several hundred nautical miles west of the Hawaiian Islands, winds have shifted out of the southeast at moderate to fresh levels for much of the marine area. Winds will be strong and possibly near gale in the coastal waters closer to Nolo, especially as it tracks north tonight and Wednesday. As a result, the Small Craft Advisory remains in effect for the waters around Kauai through Wednesday. Winds remain southeasterly through Friday as Nolo creeps slowly westward away from the islands. Once it begins to accelerate away over the weekend, east to northeasterly trade winds return.

A moderate, medium-period southwest swell originating from Hurricane Nolo will produce elevated surf for south and west facing shores today. For Kauai and Niihau, best positioned to receive swell from the hurricane, some advisory level surf is still possible today along south-facing shores, for which a High Surf Advisory remains in effect. There is considerable uncertainty with how long advisory level surf will linger as Hurricane Nolo lifts north and becomes centered some 250 to 300 nautical miles west of Kauai by Wednesday. On this track, west shore surf will remain elevated, but likely remain below advisory criteria, as south-facing shores see a gradual decline in surf through mid-week. For the latter half of the week, south shore surf will be primarily driven by a series of small, long to medium period south swells originating from near New Zealand.

Surf along east shores slowly declines as trades veer southeast and diminish, then return as light to moderate easterlies this weekend. For north-facing shores, the existing small, medium-period swell fades through Wednesday. Multiple rounds of tiny swell originating out of the northwest quadrant will reach north and select west facing exposures next week, as the storm track in the vicinity of the Aleutian Islands becomes increasingly active.

 

>>> Highest Temperature Monday, September 28, 2026 – 105 degrees at Rio Grande Village, TX


>>> Lowest Temperature Monday, September 28, 2026 – 21 degrees near Little Bitterroot Lake, MT

 

Hawaii Wall Art & Landscape Photography Prints | Aaron Reed | Aaron Reed


World-wide Tropical Cyclone Activity

 



>>> Here’s a link to the latest Pacific Disaster Center’s Weather Wall



Atlantic Ocean: 

Tropical cyclone (Fay) is located about 1525 miles west-southwest of the Azores

 

FAY WEAKENS INTO A DEPRESSION

According to the NHC advisory number 38

The depression is moving toward the southwest near 12 mph (19 km/h), and this motion is expected to continue the next couple of days. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. Little change in strength is forecast, and Fay is forecast to become a post-tropical cyclone on Wednesday. The estimated minimum central pressure is 1010 mb (29.83 inches).

cone graphic

 

Tropical cyclone (Hanna) is located about 1120 miles east-northeast of Bermuda

HANNA MOVING SOUTHEASTWARD AND SLIGHTLY WEAKER

According to the NHC advisory number 5

Hanna is moving toward the southeast near 12 mph (19 km/h) and and this motion is forecast to continue over the next day or so followed by a turn to the east-northeast. Recent satellite wind data indicates that maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Gradual weakening is expected during the next couple of days, and Hanna is likely to become a post-tropical cyclone by the latter part of this week. Tropical-storm-force winds extend outward up to 70 miles (110 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches).

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Caribbean Sea: There are no active tropical cyclones


Gulf of America: There are no active tropical cyclones

 

Northeast Pacific

Tropical cyclone 17E (Polo) is located about 15 miles south of Guaymas, Mexico

POLO ABOUT TO MAKE LANDFALL NEAR GUAYMAS MEXICO …CONDITIONS DETERIORATING IN THE LANDFALL AREA

According to the NHC advisory number 36

Polo is moving toward the northeast near 17 mph (28 km/h) and this motion is expected to continue with an increase in forward speed today. On the forecast track, the core of Polo will move inland over southern Sonora near Guaymas during the next few hours and cross portions of northwestern Mexico this afternoon. Maximum sustained winds are near 75 mph (120 km/h) with higher gusts. Little change in strength is expected before landfall. Rapid weakening is expected after landfall as the center crosses northwestern Mexico. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 90 miles (150 km). The Mexican Navy automated station in Guaymas recently reported a wind gust of 52 mph (84 km/h). The estimated minimum central pressure is 981 mb (28.97 inches).

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Tropical cyclone 18E (Rachel) is located about 265 miles southwest of Lazaro Cardenas, Mexico

RACHEL SLIGHTLY STRONGER

According to the NHC advisory number 10 

Rachel is moving toward the west-northwest near 13 mph (20 km/h). A general northwestward motion at a slower forward speed is expected during the next few days. On the forecast track, the center of Rachel is predicted to move parallel to, but stay offshore of, the coast of southwestern Mexico. Maximum sustained winds are near 65 mph (100 km/h) with higher gusts. Gradual strengthening is expected during the next few days, and Rachel is forecast to become a hurricane later today. Tropical-storm-force winds extend outward up to 160 miles (260 km) from the center. The estimated minimum central pressure is 987 mb (29.15 inches).

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Tropical cyclone 19E is located about 1535 miles west-southwest of the southern tip of Baja CA

NEW TROPICAL DEPRESSION EXPECTED TO BE SHORT-LIVED WELL OFFSHORE OF MEXICO

According to the NHC advisory number 1 

The depression is moving toward the east near 9 mph (15 km/h) and this motion is expected to continue for the next few days. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. The depression could become a tropical storm later today before weakening on Wednesday. The system is likely to degenerate into a post-tropical cyclone by late Thursday. The estimated minimum central pressure is 1004 mb (29.65 inches).

cone graphic

 

Central North Pacific:

Tropical Cyclone 15E (Nolo) is located about 325 miles west-southwest of Lihue, Hawaii

NOLO IMPACTING THE PAPAHANAUMOKUAKEA MARINE NATIONAL MONUMENT

According to the NHC advisory number 36

Nolo is moving toward the north near 9 mph (15 km/h). On the forecast track, the center of Nolo will remain well southwest and west of the main Hawaiian Islands. Nolo will continue to move northward across the Papahanaumokuakea Marine National Monument today. On Wednesday, Nolo will slow significantly, and turn toward the west, and continue generally westward through the latter part of the week. Maximum sustained winds are near 110 mph (175 km/h) with higher gusts. Steady weakening is forecast over the next couple of days, followed by some re-intensification during the latter part of this week. Hurricane-force winds extend outward up to 45 miles (75 km) from the center and tropical-storm-force winds extend outward up to 140 miles (220 km). The estimated minimum central pressure is 964 mb (28.47 inches).

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>>> Well east-southeast of the Hawaiian Islands:

Invest 91E

Showers and thunderstorms are limited and disorganized in association with an area of low pressure located well east-southeast of the Hawaiian Islands. Although the system has lost some organization today, it is still expected to become a tropical depression during the next day or two while it drifts northeastward. Environmental conditions are expected to become less conducive for development late this week.

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

 

Northwest Pacific Ocean:

Tropical Cyclone 25W (Surigae)…is located approximately 346 NM southeast of Sasebo, Japan

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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:  Sheep Grazing May Pose Greater Threat to Scotland’s Wild Pollinators Than Honey Bees

The research, published in the British Ecological Society’s Journal of Applied Ecology, has found that grazing in spring can remove much of the nectar emerging bumblebees need, while commercial honey bee hives introduced during the summer heather flowering period have a much smaller impact.

Commercial beekeepers across Europe regularly move hives onto heather moorland during the summer flowering of ling heather. This has raised concerns about competition between honey bees and wild pollinators, including bumblebees, butterflies, moths and beetles.

To find out the best way to protect them, researchers from Bristol’s School of Biological Sciences surveyed plant and pollinator communities at 20 moorland sites across Scotland over a full flowering season (May to September), comparing plots with and without introduced honey bee apiaries, and comparing land that was actively grazed and burned using ‘muirburn’ practices against land left to regenerate naturally.

Read More: University of Bristol