Glenn James

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

 

The latest update to this website was 458am Monday morning HST


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

0.23  Kilohana, Kauai
0.80  Lyon, Oahu
0.61  Puu Alii, Molokai
0.00  Lanai 1, Lanai
1.28  Puu Kukui, Maui
0.73  Piihonua, Big Island


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

25  Lihue, Kauai – NE
33  Kuaokala, Oahu – NE
37  Makapulapai, Molokai – E
30  Lanai 1, Lanai – NE
48  Na Kula, Maui – ENE
51  Puuloa, Big Island – NW


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 Pena south…with a cold front northwest

 

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

Variable low clouds over and around Hawaii…high clouds locally too…along with tropical moisture from Tropical Storm Pena to the south of the state

 

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

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

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
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Glenn’s Monday comments:  I’m with my friend Bob here at our vacation rental at Sea Ranch, Sonoma County, CA on a working vacation.

422am HST, it’s clear with high cirrus here at Sea Ranch, the low temperature was 48.5 degrees…with calm winds

 

Interesting Weather Blog: Mauka Showers…El Niño Rainfall Totals in Hawaii from Recent History

 

Hawaii’s Weather Highlights…as of Monday morning: Breezy trades will gradually ease today becoming moderate to locally breezy Tuesday. Clouds and showers will be limited to windward and mauka areas, with some spilling over to leeward areas. Breezy to locally windy trades will redevelop Wednesday through Thursday, as a new strong surface high settles north of the state.

A slight increase in windward showers can be expected during the second half of the week, as a band of moisture moves from north to south across the state. Moderate to locally breezy trades will return over the weekend.

Weather Narrative…as of Monday morning: Satellite imagery shows a pocket of low level clouds and showers just east of Oahu, moving northwest towards Kauai and becoming more diffused. Radar shows scattered light showers focusing mainly along windward areas, with some showers spilling over to leeward areas of the smaller islands.

Overnight rainfall totals ranged from 0.20 to 0.40 inches for the wetter windward areas. The pressure gradient generated from a ridge of high pressure to the north, and Tropical Storm Pena passing far southwest of the state, will gradually relax today, as the ridge weakens and Pena continues to track far southwest of the state.

Thus, expect trades to ease to more moderate to breezy levels tonight and Tuesday. Showers will trend down during the day, with a slight increase tonight. A strong surface high will sink just north of the state Wednesday into Thursday, strengthening trades back to breezy to locally windy levels. A dry and stable airmass will continue to support low inversion heights, that could help accelerate gusty downslope winds near advisory levels.

A band of moisture embedded within the trade wind flow will track south over the state as early as Wednesday night through Thursday bringing an increase in showers to exposed windward areas. The high will gradually weaken toward the end of the week into the weekend, allowing trades to ease back to more typical moderate to locally breezy speeds, while pockets of moisture focuses showers along windward and mauka areas.

Fire Weather: Near critical fire weather conditions will hold for the next several days. Breezy trade winds will gradually ease today and Tuesday. Relative humidity values will decrease to near threshold values for the next couple days, but winds and fuels will remain near or below thresholds. Winds are expected to become breezy to locally windy and inversion heights remain relatively low under a dry and stable airmass, which could help accelerate winds downslope of ridges and peaks near to above advisory levels. However, during this time a band of moisture will move through the state, that could help relative humidity values and fuels rebound. Temperature inversion heights are forecast to hover between 5,000 and 7,000 feet from Maui County to the Big Island.

 

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 Monday morning: Fresh to strong trade winds will gradually decrease through Tuesday, as the subtropical ridge north of the state shows a slight weakening trend. Tropical Storm Pena continues to drift westward, passing several hundred miles south of the Hawaiian Islands. Trade winds will strengthen once again on Wednesday as the ridge builds in north of the island chain. A surface trough will move into the region from the north on Thursday, spreading unsettled clouds and showers across the coastal waters. The Small Craft Advisory through this afternoon includes most Hawaiian coastal waters and this advisory was partially extended through Tuesday afternoon for the windier waters and channels near Maui and the Big Island.

A medium period swell out of the north-northwest (325 to 350 degree) will hold, as another small to moderate swell fills in later tonight, keeping elevated surf along north and west facing shores through Tuesday. A much larger northwest to north-northwest swell was generated by a gale force low developing east of Kamchatka. This large north-northwest swell may bring warning level surf heights to exposed north and west facing shores building in through the day on Wednesday, peaking Wednesday night, decreasing to advisory levels on Thursday, and then falling below advisory levels by Friday.

A small south swell will keep tiny surf in the forecast along south facing shores before declining through the remainder of the week. Rough surf along east-facing shores will hold at or above seasonal average. Expect slight decreasing trends as trade winds ease up on Tuesday and Wednesday.

 

>>> Highest Temperature Sunday, November 8, 2026 – 94 degrees at Yorba Linda, CA


>>>
Lowest Temperature Sunday, November 8, 2026 – 12 degrees at Leadville, CO

 

Hawaii Summer Fruit Season: Lychee, Mango and Markets


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: There are no active tropical cyclones

>>> Eastern East Pacific:

Invest 96E

Shower and thunderstorm activity has diminished near the small area of low pressure located several hundred miles offshore of El Salvador and Nicaragua. Environmental conditions are expected to remain unfavorable for development over the next several days as the system drifts westward or west-southwestward away from land, and the chances of it becoming a short-lived tropical cyclone are decreasing.

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

 

Central North Pacific:

Tropical Storm Pena is located 585 miles south-southwest of South Point, Hawaii

PENA PERSISTS AS A TROPICAL CYCLONE FOR NOW

cone graphic

 

Northwest Pacific Ocean:

Tropical Cyclone 31W (Cempaka)…is located approximately 329 NM west of Iwo To

https://www.metoc.navy.mil/jtwc/products/wp3126.gif

 

Southwest Pacific Ocean: There are no active tropical cyclones

 

North and South Indian Oceans / Arabian Sea:   

South Indian Ocean

Tropical Cyclone 03S…is located approximately 488 NM north-northeast of Antananarivo, Madagascar – Final Warning

 

https://www.metoc.navy.mil/jtwc/products/abpwsair.jpg

Here’s the link to the Joint Typhoon Warning Center (JTWC)



Interesting: 
Nutrient Balance in Leaves Affects Fall Color, Study Finds

For devout leaf peepers, timing is everything. A new study led by researchers from Duke University’s Nicholas School of the Environment shows that leaf nutrient levels affect the onset of fall color. The findings could improve leaf drop forecasts and carbon cycle tracking.

Starting roughly in September in the United States, deciduous trees — species that seasonally drop their leaves — stop making the green pigment chlorophyll, used in photosynthesis. As other pigments become visible, leaves shift to shades of turmeric and crimson before dropping off. By mid-November, most deciduous trees are bare.

That process, called senescence, is a tree’s way of conserving energy for winter. As days shorten, less sunlight is available to leaves to convert carbon dioxide from the air into life-sustaining sugars. Photosynthesis, which is energy-intensive, basically becomes more trouble than it’s worth for several months.

Read More at: Duke University