The latest update to this website was at 621am Monday (HST)

 

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

0.01  Waialae, Kauai
0.01  Lyon, Oahu
0.05  Honolimaloo, Molokai
0.00  Lanai
0.02  Hana AP, Maui
0.30  Kealakomo, Big Island

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

12  Port Allen, Kauai
13  Kili Dr, Oahu
12  Makapulapai, Molokai
08  Lanai 1, Lanai 
13  Summit, Maui
18  Puuanahulu, Big Island

 

Hawaii’s Mountains – Here’s a link to the live webcams on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii, and atop the Haleakala Crater (~10,023 feet) 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

Deep storm Low with its associated cold front north-northwest 

 

https://www.weather.gov/images/hfo/satellite/Hawaii_IR_loop.gif

 High clouds moving over the state from the north 

 

 

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

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

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

Showers locally…very few 

 

Please open this link to see details on any current Watches, Warnings and Advisories noted above

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Monday comments:  I’m here in upper Kula Maui as we head into this last month of 2025

It’s partly cloudy here in Maui County early this morning…with a very cool low temperature of 49 degrees at my place.

Weather Wit of the day: Graduation Forecast – “A brainy day”

>>> Highest Temperature Sunday, November 30, 2025 – 87 at Naples, Florida
>>> Lowest Temperature Monday, December 1, 2025 – minus 25 near Poplar, MT

 

Hawaii’s Broad Brush Weather Overview: An approaching weak cold front will stall near Kauai on Wednesday, and continue to keep the high pressure ridge entrenched directly over the Hawaiian Islands. Large scale stability under this ridge and drier southeasterly wind flow will minimize shower activity into Tuesday.

Clouds and showers along the frontal band may stall over Kauai by Wednesday, potentially increasing shower activity over the Garden Isle. Trade winds will build back into the region and strengthen from Thursday onward, bringing back periods of passing showers to windward and mountain areas, favoring the typical overnight to early morning hours.

Hawaii’s Weather Details: Satellite imagery shows a band of fairly stable stratocumulus clouds are moving up from the southeast into the Big Island and east Maui. Local radar imagery shows passing showers over the southeast slopes of both islands. Farther to the northwest, another weakening cold front approaches the Hawaii Region.

A high pressure ridge remains locked in place over the island chain, producing stable conditions and light southeasterly winds. The subsidence temperature inversion heights, as measured by weather balloon observations from Lihue and Hilo, are showing two temperature inversion levels around 3,000 and 6,000 feet elevation.

These two temperature inversions will continue to serve as a stable capping force for cloud development, reducing shower potential statewide. Additional stable dry trends are also due in part to southeasterly wind flow that places the smaller islands in a drier rain shadow of the Big Island, with clouds tracking more parallel to island mountain ranges, limiting orographic lifting of clouds over windward mountains.

Lighter large scale winds will also keep daytime onshore sea breezes going for most areas through Tuesday. VOG from the Kilauea Volcano will also ride into all islands on these drier southeasterly winds. This VOG will appear as haze affecting all islands today, with some improving trends from today onward, as the low level steering winds begin to change.

This dry southeasterly wind pattern will continue for most areas through Tuesday or Wednesday. On Wednesday, model solutions continue to show changes in our local weather pattern, as a weakening cold front moves near Kauai and stalls. Shower activity will likely increase over Niihau and Kauai for 12 to 24 hours, until this front breaks apart and drifts westward away from the islands.

A high pressure system will build in north of the state for the second half of the week, increasing easterly trade winds across the area. Expect some southeasterly winds to linger on Thursday morning, with winds becoming more easterly and stronger from Thursday night into the weekend. As the ridge over the islands lifts northward, our typical trade wind shower activity returns with brief passing showers forecast along windward and mountain areas, favoring the typical overnight to early morning hours.

Fire weather:  Rather dry conditions are expected to persist through at least Tuesday. Winds will be light and variable under a stable land and sea breeze pattern, keeping weather conditions below critical fire weather thresholds. Two temperature inversion heights will remain in place over Maui and the Big Island, with the lowest inversion height in the 2,500 to 3,000 foot elevation range, and the higher inversion height in the 6,000 to 6,500 foot elevation range.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation / 8-Day Precipitation model

https://www.weather.gov/images/hfo/graphics/npac.gif 

 

Hawaii’s Marine Environment: A weak surface ridge will remain over the area through Tuesday and maintain light to moderate southeast background flow. This pattern will allow for daytime sea breezes and nighttime land breezes along waters adjacent to the coasts. A slowly declining large northwest swell will generate seas above Small Craft Advisory (SCA) levels for exposed waters.

A cold front is projected to approach Kauai from the northwest on Wednesday, but models quickly weaken it into a trough as it retrogrades back westward, away from the islands. Moderate to locally strong easterly trade winds will finally return Friday into the weekend, as surface high pressure builds northeast of the area.

The current, large, long-period northwest (320 degree) swell will slowly decline. Waimea Bay Buoy 51201 continues to report swell heights dropping and the High Surf Warning will remain in effect through noon today for exposed north and west facing shores of most islands. Surf is then expected to drop to advisory levels by this afternoon as the swell energy eases. Another large, long period northwest swell (310-330 degree) is forecast to fill in on Wednesday, peak Thursday, then slowly subside on Friday. Surf may once again approach warning levels.

East shore surf will remain small through Thursday due to weak winds, then become choppier as trade winds increase Friday through the weekend. Expect small background swell and surf for south facing shores.



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of America:  There are no active tropical cyclones

 

Northeastern Pacific:  There are no active tropical cyclones

North Central Pacific: There are no active tropical cyclones

Here’s the link to the National Hurricane Center (NHC)

 

Northwest Pacific Ocean:  

Tropical Cyclone 33W (Koto)…is located 203 NM east-southeast of Da Nang, Vietnam

https://www.metoc.navy.mil/jtwc/products/wp3325.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:  There are no active tropical cyclones

South Indian Ocean: There are no active tropical cyclones

Arabian Sea: There are no active tropical cyclones

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

 

>>> Here’s a link to the Pacific Disaster Center’s (PDC Global) Weather Wall website

 

Interesting: Scientists Develop Plastics That Can Break Down, Tackling Pollution

Yuwei Gu was hiking through Bear Mountain State Park in New York when inspiration struck.

Plastic bottles littered the trail and more floated on a nearby lake. The jarring sight in such a pristine environment made the Rutgers chemist stop in his tracks. Nature makes plenty of long-stranded molecules called polymers, including DNA and RNA, yet those natural polymers eventually break down. Synthetic polymers such as plastics don’t. Why?

“Biology uses polymers everywhere, such as proteins, DNA, RNA and cellulose, yet nature never faces the kind of long-term accumulation problems we see with synthetic plastics,” said Gu, an assistant professor in the Department of Chemistry and Chemical Biology in the Rutgers School of Arts and Sciences.

Read more at: Rutgers University

Chemist Yuwei Gu (at left) and graduate student Shaozheng Yin employ a gel permeation chromatography machine to measure the size of polymers and how they break down. The analysis is an important aspect of their work.