The latest update to this website was at 6am Wednesday (HST)

 

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

5.25  Mount Waialeale, Kauai
0.77  Manoa Lyon Arboretum, Oahu
0.43  Puu Alii, Molokai
0.02  Lanai City, Lanai
2.46  Puu Alii, Maui
2.17  Kawainui Stream, Big Island

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

27  Lihue – E
35  Oahu Forest NWR, Oahu – ENE
28  Makapulapai, Molokai – ENE
24  Lanai 1, Lanai – NE 
37  Na Kula, Maui – NE
35  Puuloa, Big Island – NE

 

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 northwest and west

 

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

Higher level clouds arriving 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 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

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

It’s mostly clear with clouds along the windward side here in Maui County early this morning, with a low temperature of 50 degrees at my place, with the relative humidity 78 percent.

Weather Wit of the day: Winter Travelers Advisory – “Traffic moving snowly”

>>> Highest Temperature Tuesday, December 23, 2025 – 89 Rio Grande Village, TX
>>> Lowest Temperature Wednesday, December 24, 2025 – minus 2 at Grand Marais, MN

 

Hawaii’s Broad Brush Weather Overview: Easterly trade winds will slowly decrease through the Christmas holiday weekend. Shower activity will be limited through Sunday. An approaching cold front and upper level disturbance on Sunday will spread significant clouds and showers across the state next week, as the system moves eastward into the Hawaii area. This upper disturbance may significantly increase rainfall for all islands next week in a light to moderate wind pattern.

Hawaii’s Weather Details: Satellite imagery shows a low pressure system far northwest of the state with a stalled front lingering west of Kauai. More stable stratocumulus clouds are found just northeast or upstream of the Hawaiian Islands. These more stable clouds are consistent with a high pressure ridge building over the region, producing more stable conditions by warming and drying the middle atmosphere through downward moving air compression or subsidence.

Subsidence temperature inversion heights, as measured by upper air balloon soundings from Lihue and Hilo, range from around 6,000 to 7,000 feet elevation respectively. These inversion heights are significantly lower than previous observations, matching well with our increasing stability trend forecast due to the building ridge. One wrinkle noted in this mornings satellite imagery, is a few thunderstorms drifting eastward into the Northwest Kauai Waters, these thunderstorms will likely fade out.

Expect a drier and more stable weather pattern lasting into the weekend with diminishing easterly trade winds, veering from a more east to southeast direction Friday into the weekend. Easterly trade winds are hanging on a little longer than were originally forecast, however drier trends with only brief passing showers will prevail in the short run. Temperature inversion heights during this time period will lower, ranging from around 4,000 to 6,000 feet elevation, capping vertical cloud development and reducing shower potential statewide. Lighter wind speeds will also limit lifting of passing clouds over windward mountain ranges.

By Sunday, another shallow cold front approaches Kauai from the northwest. The latest model consensus suggests this weak frontal trough will stall near Kauai. However, a more interesting pattern is brewing in the upper levels, as a passing and strong upper level trough may deepen into an upper low, and sweep eastward into the islands. The latest American (GFS) extended range model solution continues to show this upper low moving across the entire state during this time period. However, the European (ECMWF) weather model is projecting a much weaker upper level trough passing through the region, with a much drier solution.

If this long range GFS solution works out as predicted, then all islands will see several days of enhanced rain shower activity, in a light to moderate wind pattern through the middle of next week. Island by island rainfall activity will heavily depend on the strength and track of this upper level cold core low pressure system. Please stay tuned to this evolving weather pattern as the potential for heavy rain from this system may develop during this time period.

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: Surface high pressure located far north of the coastal waters will continue to drift southeast, as a large area of low pressure far northwest of Kauai will attribute to fresh to locally strong easterly trade winds through this afternoon and gradually weaken through Thursday. A Small Craft Advisory (SCA) has been scaled back to the windier waters and channels around Maui County and the Big Island. The SCA may need to be extended for another day or two as trades slowly ease. The low will move to the east Friday into the weekend, pushing a surface ridge near the islands, causing winds to further decline and eventually shift out of the southeast and south.

Surf along north facing shores will gradually decline before a moderate, medium period north-northeast (010-030 degrees) swell is expected to fill in, peak Christmas Day near High Surf Advisory levels, before declining Friday. Forerunners of this swell should start to reach offshore buoys, with most of the energy to be focused over the eastern end of the state when it arrives. A Marine Weather Statement will likely be issued for moderate harbor surges at Kahului and Hilo tonight through Christmas Day.

A combination of the declining north-northeast swell and a small long period west-northwest swell will keep small surf breaking through the weekend. West facing shores will see a tiny, moderate period west swell hold. The next large long period northwest swell is expected over the first half of next week, but stay tuned as the system develops northwest of the islands.

Rough and choppy surf along east facing shores will remain elevated and gradually decline as trade winds ease slightly. Seas remain elevated just below SCA criteria over windward coastal waters but are expected to trend down. With the building north-northeast swell expected, exposed shorelines will see wrapping energy through Friday. Surf along south facing shores will remain very small 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 (Grant)…is located approximately 48 NM east-northeast 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: Microencapsulated B-Vitamins Help Dairy Cows Produce More Milk with Fewer Emissions

A new international study led by McGill University in collaboration with Jefo Nutrition shows that supplementing dairy cow diets with microencapsulated B-vitamins can significantly reduce greenhouse gas emissions while increasing milk yield and quality. The use of the feed additive cut global warming potential, an internationally standardized measure of climate impact, by up to 18 per cent across seven countries.

The researchers calculated that its use in Canada alone would reduce carbon emissions by half a million tonnes. To arrive at that figure, they considered emissions not only from cows and their manure, but also from other components of dairy production. such as feed storage and transport.

“Livestock production contributes about 11 to 19 per cent of global emissions, and feed is one of the most accessible levers producers can adjust,” said Ebenezer Miezah Kwofie, study co-author and Assistant Professor of Bioresource Engineering at McGill. “Our goal was to look at what can be done to minimize emissions with feed additives and determine how variation from one region to another changes the dynamic.”

Read More at: McGill University