The latest update to this website was at 803pm Monday (HST)

 

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

1.12  Mount Waialeale, Kauai
0.19  Punaluu Stream, Oahu
0.04  Puu Alii, Molokai
0.00  Lanai
0.09  Hana AP, Maui
0.82  Palamanui, Big Island

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

21  Port Allen, Kauai – ENE
23  Honolulu AP, Oahu – NE
24  Makapulapai, Molokai – E
28  Lanai 1, Lanai – NE 
38  Kealalolo Rg, Maui – NE
28  Kawaihae Rd, Big Island – E

 

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

Middle level altocumulus clouds arriving from the west…showery low clouds from the east

 

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.

2pm, clouds are forming over Maui this afternoon, mostly around the mountains. Looking at satellite imagery we see an area of showery cumulus clouds approaching the windward sides of the state.

6pm, the middle level altocumulus clouds lit up a very pretty pink color at sunset, these are the least frequent clouds that grace our skies of the islands.

805pm, that showery looking band of low clouds out to the northeast has reached Kauai, and should work its way down to the other islands tonight into Tuesday morning.

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

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

 

Hawaii’s Broad Brush Weather Overview: Strong trades tonight and Tuesday will ease during late week eventually veering to southeasterly. A band of showers will focus showers primarily windward and mauka tonight.

Hawaii’s Weather Details: High pressure ridging centers over the islands through late this week, maintaining a rather transient period of trade wind weather. A brief period of strong trades anchored along the lead edge of building high pressure, will sweep through the area tonight through Tuesday, bringing with it a band of showers.

This band is seen on visible imagery immediately offshore and approaching the islands from the east, and is poised to arrive late this evening. Solid presentation on satellite imagery suggests a high coverage of showers, some of which be carried leeward at times by strengthening trades.

Troughing across the north Central Pacific then moves high pressure eastward, causing trades to weaken through mid-week then veer to southeast by the weekend. The gradient over the western end of the state further weakens as surface pressure falls spread eastward, potentially favoring a couple days of a land/sea breeze pattern over the smaller islands early next week.

Modeling suggests the Pacific jet stream will once again slide into the lower latitudes, introducing the potential for low pressure west of the islands, leading to a potentially more active weather pattern reemerging by mid/late next week.

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 183 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