The latest update to this website was at 555am Monday (HST)

 

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

0.75  Mount Waialeale, Kauai
0.02  Kaala, Oahu
0.00  Molokai
0.00  Lanai
0.03  West Wailuaiki, Maui
0.29  Keahuolu, Big Island

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

18  Port Allen, Kauai – NE
24  Palehua, Oahu – NE
29  Makapulapai, Molokai – E
23  Lanai 1, Lanai – NE 
33  Na Kula, Maui – E
28  Upolu AP, Big Island – ENE

 

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

An upper level low with front/trough of low pressure to the west

 

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

Clear to partly cloudy…with middle level clouds approaching from the west

 

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…not many 

 

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 at home in upper Kula, Maui

It’s mostly clear here in Maui County early this morning, with a low temperature of 52.5 degrees at my place, with the relative humidity 80 percent.

Weather Wit of the day: Weekend Forecast – “Rain followed by scattered complaints”

>>> Highest Temperature Sunday, December 21, 2025 – 90 near Hildlgo, TX
>>> Lowest Temperature Monday, December 22, 2025 – minus 13 at Mount Washington, NH

 

Hawaii’s Broad Brush Weather Overview: Easterly trade winds will continue to strengthen to breezy levels by tonight and hold through Tuesday. A remnant cold front moving in from the north will increase showers tonight into Tuesday, with mainly light to moderate showers focusing along windward and mountain areas, with periods of showers spilling over to leeward sides. A drier more typical locally breezy trade wind pattern is expected from Wednesday to Thursday.

A cold front will become nearly stationary northwest of the state Friday into the weekend, veering winds out of the east-southeast. This lighter pattern will allow for a hybrid trade wind and sea breeze regime to set up over the weekend. A wetter pattern shift may be possible early next week.

Hawaii’s Weather Details: A storm force low far northwest of the state is sending some high clouds over the western half of the island chain this morning. A ridge of high pressure north of the state is generating locally breezy easterly winds across the state, with limited low level clouds and showers along windward and mountain areas.

Trade winds will strengthen to breezy levels speeds later this afternoon and early evening, as the ridge continues to strengthen. A remnant band of clouds will push through the state tonight by these stronger easterly trade winds during this time. Expect increasing clouds and showers along windward and mountain areas, with a few showers spilling over into leeward areas tonight into early Tuesday morning. Chances of showers will trend down through the day Tuesday after this band swiftly moves through the state.

The ridge of high pressure will weaken Christmas Eve through Christmas Day, as the storm force low far northwest of the island lifts north. Trade wind speeds will gradually ease to locally breezy speeds during this time. Drier and more stable conditions will develop state-wide as mid to upper level ridging develops over the island chain.

Friday the storm low will track east far north of the state, with a trailing frontal boundary becoming nearly stationary northwest of Kauai. The proximity of this frontal boundary will place the weak surface ridge over the state, veering winds out of the east-southeast. Winds will become light to gentle over the western half of state, while more locally breezy east-southeast winds hang around the eastern half of the state. This setup will lead to a hybrid trade wind sea breeze pattern under a mostly dry and stable airmass, as mid to upper level ridging holds over the state.

The extended range model guidance shows deep upper level troughing could lead to more instability developing over the western half of the state over the weekend into early next week. In addition, southerly flow at the surface will draw in more moisture, increasing chances of showers over the weekend into early next week. No significant weather is expected at this time but time will tell.

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: High pressure continues to build into the islands from the north, increasing easterly trade winds lasting into Wednesday morning. Trades then ease and wind directions will veer from a more southeasterly to southerly direction Wednesday night onward, as a low pressure system approaches from the northwest, driving the surface ridge axis over the islands.

Briefly stronger winds are expected behind an old remnant frontal cloud band moving into Hawaiian waters from the north starting tonight through Tuesday. The Small Craft Advisory for the typical windier waters and channels near Maui and the Big Island remains in effect, this SCA will expand in coverage for most coastal waters starting tonight due to increasing trade wind speeds.

The current medium period north to north-northeast (360-020 degree) swell energy continues to slowly decline and swell heights and periods are dropping at offshore and coastal buoys. The forerunners associated with the next moderate north to north-northeast (360-020 degree) swell are forecast to arrive by late Wednesday, bringing moderate surf to favored northern exposures Wednesday night into Friday.

Surf heights along west facing shores will be limited as the north-northeast swell direction and medium period swell energy is less favorable. A Marine Weather Statement may be needed for this next swell affecting north facing harbors possibly by Wednesday night, especially impacting the harbors of Kahului and Hilo.

Returning trades will build surf along east facing shores peaking with stronger trades on Tuesday. The north-northeast swell will likely boost choppy and rough surf heights a bit along east facing shores through Wednesday. Surf along south shores remains tiny with fleeting background south to southwest energy through the week.

 

Beautiful Pictures Of Hawaii To Brighten Dark Rooms



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:  There are no active tropical cyclones

Southwest Pacific Ocean:  There are no active tropical cyclones

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

South Indian Ocean:

Tropical Cyclone 09S…is located approximately 254 NM east of the Cocos Islands

https://www.metoc.navy.mil/jtwc/products/sh0926.gif

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: Fine Particles in Pollution are Associated with Early Signs of Autoimmune Disease

A new study has linked air pollution exposure and immune-system changes that often precede the onset of autoimmune diseases.

McGill University researchers analyzing Ontario data found that fine particles in air pollution are associated with higher levels of a biomarker linked with autoimmune diseases, such as systemic lupus.

“These results point us in a new direction for understanding how air pollution might trigger immune system changes that are associated with autoimmune disease,” said Dr. Sasha Bernatsky, a James McGill Professor of Medicine and member of the McGill Centre for Climate Change and Health, the Division of Rheumatology and the Centre for Outcome Research and Evaluation. “We know some genetic factors play a role in autoimmune disease, but they don’t tell the whole story.”

Read more at: McGill University