Glenn James

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

 

The latest update to this website was at 627am Friday morning HST


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

8.13  Mount Waialeale, Kauai 
2.93  Poamoho RG 1, Oahu
0.00  Molokai
0.03  Lanai AP, Lanai
0.39  Park HQ, Maui
0.37  Waikoloa, Big Island


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

21  Moloaa Dairy, Kauai – SE
20  Kii, Oahu – SE
16  Makapulapai, Molokai – SE
15  Na Kula, Maui – ESE
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.


https://weather.gc.ca/data/satellite/goes_gwdisk11_1070_100.jpg

Big Blue…click twice for largest version

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

   Tropical Storm Nolo west of Hawaii…Hurricane Rachel near Mexico


https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/13/20262750640-20262751430-GOES18-ABI-HI-13-600x600.gif

Variable clouds are present over the island chain 

 

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https://radar.weather.gov/ridge/standard/PHKI_loop.gif

https://radar.weather.gov/ridge/standard/PHKM_loop.gif

Localized Showers…some heavy around Kauai and Oahu

 

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

521am, it’s mostly clear here at my place although with voggy air still, the low temperature 56 degrees, relative humidity is 83%…with calm conditions


Hawaii’s Weather Highlights
…as of Friday morning:
The subtropical ridge will slowly build back in over the Hawaiian Islands, as Tropical Storm Nolo continues to drift westward away from the Hawaii area. Higher pressure returning to the islands will produce easterly trade winds, increasing atmospheric stability, lowering humidity levels and decreasing shower trends through the weekend.

Brief passing showers will favor windward mountain areas in the overnight to early morning hours. Increasing cloud cover and shower trends may return from Monday night into Thursday morning due to a passing disturbance.

Weather Narrative…as of Friday morning: Southerly winds across the western islands last night produced bands of moderate to heavy showers affecting the islands of Niihau, Kauai, and portions of Oahu. High water levels in local streams briefly exceeded flash flood thresholds over northern Kauai, triggering Flood Advisory and Flash Flood Warning issuance. No reports of flooding were received during last nights event.

Today we begin to transition back to more typical drier easterly trade wind weather, just in time for the weekend. Lower humidity levels and mostly sunny skies will prevail from Saturday through Monday afternoon. A weak disturbance may bring another round of enhanced showers to all islands from Monday night into Thursday morning. Trade wind temperature inversion heights rise into the 8,000 to 10,000 foot range, which allows for scattered to numerous shower activity statewide.

Northeastern to eastern windward mountain slopes would likely see the higher rainfall amounts due to easterly wind forcing, in this evolving weather pattern for the middle of next week. Look for increased wet trade wind rainfall coverage for this time period, with drying trends forecast by the end of next week.

Fire Weather:  Fire weather conditions will remain below critical threshold this week for both wind and humidity levels. Temperature inversion heights near Maui and the Big Island today will range from 6,000 to 7,000 feet elevation.

 

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 Friday morning: Moderate to fresh east to southeasterly winds will prevail across the region today as Tropical Storm Nolo lingers amongst the Northwestern Hawaiian Islands. Nolo will begin to accelerate westward away from the Hawaiian Islands today, which will diminish its influence on Hawaiian waters. Gentle to fresh east to northeast trades fill back in across the waters this weekend into early next week. A Small Craft Advisory may be needed for the typically windy channels late this weekend for locally strong trades. By mid-next week, troughing developing northwest of the islands may cause the trade winds to weaken and veer out of the southeast once again.

A moderate, medium-period west to southwest swell originating from Tropical Storm Nolo will continue for Niihau and Kauai today before quickly fading tonight. Meanwhile, a small, background south swell continues for other islands, holding surf mostly steady along south facing shores through the 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.

Surf along north-facing shores will see a tiny rise today into tonight as a small, short-period northerly swell moves through the region. Small surf is possible early next week as a small, medium-period northwest swell arrives this weekend and peaks on Monday, followed by a slightly larger northwest swell, peaking on Wednesday. Surf along east facing shores will see a slight boost and become more choppy as easterly trades build back into the region this weekend.

 

>>> Highest Temperature Thursday, October 1, 2026 – 107 degrees at Death Valley, CA


>>>
Lowest Temperature Thursday, October 1, 2026 – 23 degrees at Foxpark, WY

 

Oahu Pictures and Landscape Photography | Waikiki Art Gallery


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

>>> Subtropical West-Central Atlantic:

Remnants of Fay

An area of low pressure associated with the remnants of former Tropical Storm Fay is located several hundred miles southeast of Bermuda. Despite ongoing thunderstorm activity, dry air and strong upper-level winds are expected to prevent significant re-development while it moves northwestward, to the east of Bermuda. Any formation chances should end by Sunday due to very strong upper-level winds.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…low…10 percent 

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 255 miles south-southwest of the southern tip of Baja CA

RACHEL PASSING JUST NORTH OF SOCORRO ISLAND

According to the NHC advisory number 22 

Rachel is moving toward the west near 6 mph, and this general motion is expected to continue through the weekend. A gradual turn toward the west-northwest with an increase in forward speed is expected by Monday. Maximum sustained winds have decreased to near 110 mph with higher gusts. Additional weakening is expected over the next day or two. However, Rachel is expected to remain a hurricane for 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 150 miles (240 km). The weather station on Socorro Island recently measured sustained winds of 57 mph with a gust to 79 mph. The estimated minimum central pressure is 959 mb (28.32 inches).

cone graphic

 

>>> 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 by the middle 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 255 miles southeast of Maro Reef

NOLO ALMOST A HURRICANE AGAIN

According to the NHC advisory number 48

Nolo is moving toward the west-northwest near 6 mph. A westward or west-northwestward motion with an 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 French Frigate Shoals. Maximum sustained winds have increased to near 70 mph with higher gusts. Additional strengthening is forecast, and Nolo is expected to become a hurricane later today and a major hurricane by early Sunday. Tropical-storm-force winds extend outward up to 115 miles from the center. The estimated minimum central pressure is 987 mb (29.15 inches).

cone graphic

 

Northwest Pacific Ocean:

Tropical Cyclone 26W(Choi-Wan)…is located approximately 165 NM north-northwest 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: 
Green Roofs and Living Walls Advance Urban Sustainability in Hawaii

A living laboratory at the University of Hawai?i at M?noa’s Magoon Research and Education Station is exploring ways to cool buildings and homes without expensive electricity bills while increasing local food production.

Led by Andy Kaufman, associate professor in the Department of Tropical Plant and Soil Sciences at the College of Tropical Agriculture and Human Resilience (CTAHR), the project evaluates vegetated roof and living wall systems designed for tropical island environments.

“There’s nothing like this that we know of in the world that’s this high-tech and this real-world application,” Kaufman said.

Read More: University of Hawaii