The latest update to this website was at 645am Friday (HST)

 

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

1.24  Mount Waialeale, Kauai
1.31  Oahu Forest NWR, Oahu
0.36  Puu Alii, Molokai
0.00  Lanai
0.69  West Wailuaiki, Maui
1.00  Saddle Quarry, Big Island

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

23  Nawiliwili, Kauai
38  Oahu Forest NWR, Oahu
32  Makapulapai, Molokai
08  Lanai 1, Lanai 
33  Na Kula, Maui
28  South Point, 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


Cold front/trough moving away from Kauai…thunderstorms in the deeper tropics

 

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

 There are some higher clouds near Kauai and south of the Big Island…otherwise, just the ordinary lower level cumulus clouds in our vicinity

 

 

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…a few are heavy 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Aloha Friday comments:  I’m here at home through the winter in upper Kula, Maui

It’s mostly clear here in Maui County early this morning, although with low clouds along the windward sides…with a low temperature of 52 degrees at my place.

Weather Wit of the day: Mud Slide Warning – Squishful thinking

>>> Highest Temperature Thursday, December 4, 2025 – 88 near Ochopee, Florida
>>> Lowest Temperature Friday, December 5, 2025 – minus 22 at Saranac Lake, NY

Monthly Precipitation Summary

Month: November 2025

Headline: Significant rainfall on Kauai, Maui, and the Big Island from a couple of notable events, but continued dryness for most leeward areas.

The month opened with dry and breezy conditions, though winds weakened and shifted slightly east-southeast as a front approached from the northwest. An upper low near the islands helped enhance windward and mountain showers through the first weekend, especially across the western islands and parts of the South Kohala District on the Big Island. The most notable rainfall occurred on the northern coast of Kauai on the 2nd, where Flood Advisories were issued as rates reached 1 to 2 inches per hour for a large portion of the day. The NWS Hanalei gauge measured around 10 inches in eight hours (11.2 inches in 24 hours), but the area, surprisingly, experienced no significant impacts. Tropical moisture also brushed the southern Big Island on the 3rd, producing heavier showers along windward slopes. A quieter stretch followed for the next few days, as moderate to locally breezy trades returned and conditions dried out. Only minimal windward showers developed, while a departing upper low spread high clouds over the state.

A cold front brought a more significant rainfall event on the 8th and 9th. Shallow moisture and low-level northeasterly flow favored windward and mountain areas for rainfall, where two-day totals commonly reached 1 to 3 inches. A few standout locations on each island recorded 5 to 9 inches, including West Wailuaiki on Maui and Pu?u Ali?i on Molokai. No flooding impacts were reported, and breezy northeast trades filled in behind the front. Typical breezy to locally strong trades dominated the 10th through the 14th, with lingering post-frontal moisture sustaining frequent windward showers. Maui County and the Big Island saw repeated daily rainfall totals of 1 to 3 inches, while Puu Kukui on Maui recorded isolated maxima over 7 inches on the 12th and 13th.

The middle of the month turned noticeably drier as moderate trades prevailed from the 15th to the 17th. A more humid and unsettled pattern returned from the 18th to the 20th when an upper low southwest of the islands pulled deep tropical moisture northward. With precipitable water values near 2 inches, enhanced showers developed mainly across the eastern half of the state. Breezy to locally windy trades focused the heaviest rainfall along windward slopes of Maui and the Big Island, where 24-hour totals generally reached 1 to 3 inches.

Conditions dried out and stabilized to close out the month, resulting in reduced shower activity with rainfall largely confined to scattered windward and mountain showers and otherwise quiet conditions. Trades also eased from moderate-breezy to light-moderate and shifted more out of the east-southeast as fronts passed north of the islands.

 

Hawaii’s Broad Brush Weather Overview: Light to occasionally breezy easterlies will gradually drop off through the day. Today’s highest rain chances will be over windward Big Island and the island of Maui. A dry weekend for many, with limited clouds and infrequent showers focusing along upslope windward mountains, mainly overnight and leeward areas on the Big Island during the day.

Hawaii’s Weather Details: The upper trough west of the islands is weakening and continuing to move north, as it encounters a large upper ridge northeast. The pressure gradient from the high centered northeast is tight enough to support moderate to locally strong offshore easterlies. These winds will persist through the afternoon, and may become occasionally gusty across many windward exposures and around higher terrain through most of the day.

The latest area of moisture has advanced across Big Island, and dropped a solid quarter to a half an inch of rain along windward Mauna Kea and Mauna Loa.  IR imagery shows less consolidation of thicker, warmer clouds east of the state. This verifies the guidance of a drying atmosphere. There is one batch of higher moisture/deeper clouds southeast of Big Island that will come across later this morning. This will introduce showers to windward Big Island through the early afternoon.

The upper trough and associated southern branch of the polar jet stream are both losing their punch. The trough will wash out along its northeast journey around upper to mid level ridging east of the state, and open the door for prevailing dry conditions this weekend. A near 6-7,000 foot inversion will not be deep enough to support much in the way of organized showers. The only measurable rain will fall upslope windward or within higher elevations into the mid to late afternoon.

Ridging will build in from the west-southwest and envelope the state early next week. Subtle weakening of the high off the U.S West Coast early next week will maintain gentle to breezy trades through the middle of the week. Ridging will introduce very dry air over the islands, that will equate to more sunshine with little to no light precipitation. Confidence is moderately high of a drier beginning of the week under seasonable trades.

The weather pattern may undergo change late next week, as the next North Pacific trough moves across the central basin. The leading front appears to behave the same way as this current one…stalling west of Kauai, as the bulk of the upper level support/energy is directed northeastward. The only way a weak front will advance into our waters is if the weakening trough provides the needed umph to progress a light wind shift eastward.

Since both long range models are way out of phase and disagree on the evolution of this next feature, confidence is extremely low on any significantly impactful weather next Friday. The best chance may be a very weak wind field, allowing localized breezes to play a more dominant role. This scenario would mean more leeward and further interior showers, but little rain to ease the pain of this moderate to severe drought.

Fire weather: Critical fire weather conditions are not expected this week. Light to occasionally moderate trades, but winds will remain below the critical fire weather threshold. The lack of any significant rain will exacerbate already dry conditions across the entire state. The inversion sloped from around 6,500 feet at Lihue to around 9,000 feet over Hilo.

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 trough west of Kauai will gradually weaken and retrograde westward, away from the islands. Meanwhile, a ridge of high pressure building northeast of the state, will allow for moderate to locally strong east to east-southeast winds to persist through early Saturday. A Small Craft Advisory (SCA) remains in effect through 6am Saturday morning for most of the marine waters surrounding the Big Island and Maui County and western waters around Kauai and Oahu for winds and seas.

A moderate, medium period northwest swell (320 degrees) has filled in across north and west facing shores, bringing surf heights above High Surf Advisory (HSA) criteria. This swell is expected to peak, then ease into the weekend. A HSA is in effect for north and west facing shores of Kauai, Oahu and Molokai and north shores of Maui. This swell will hold, then gradually fade and veer to the north-northwest through the remainder of the weekend into early next week, and bring below average surf for north and west facing shores.

East shore surf will gradually build and become choppy as trade winds increase. Expect minimal energy for south facing shores.

Peak monthly tides combined with water levels that are running higher than predicted will likely lead to minor flooding along the shoreline and in low-lying coastal areas. Coastal flooding is possible around the daily peak tide, which will be during the early morning hours. This could also magnify effects of the high surf on coastal areas along north and west facing shores around the same time frame.





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: 

Tropical Cyclone 06P is located approximately 129 NM northeast of Papeete, Tahiti 

https://www.metoc.navy.mil/jtwc/products/sh0626.gif

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:  Switching to Electric Stoves Can Dramatically Cut Indoor Air Pollution

A new study links gas and propane stove emissions to asthma, lung cancer, and other health risks. Transitioning to electric could reduce exposure by over 50%.

For millions of Americans, staying indoors offers little protection from dangerous air pollution, according to a new Stanford University-led study.

The paper, published in PNAS Nexus, reveals that gas and propane stoves expose people to substantial amounts of nitrogen dioxide, a pollutant linked to health problems that include asthma, obstructive pulmonary disease, preterm birth, diabetes, and lung cancer. Replacing gas stoves with electric reduces nitrogen dioxide exposure by over a quarter on average across the U.S. and by half for the heaviest stove users, according to the findings.

Previous studies have measured nitrogen dioxide pollution from gas stoves, but this is the first study to measure exposure to nitrogen dioxide outdoors and indoors nationally (read related research brief “The Elevated Health Risks from Nitrogen Dioxide and Benzene in Homes”).

Read More: Stanford University