The latest update to this website was at 829pm Tuesday (HST)

 

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

1.13  Mount Waialeale, Kauai
0.50  Lyon, Oahu
0.40  Makapulapai, Molokai
0.01  Lanai 1, Lanai
0.41  Hana AP, Maui
2.06  Waiaha Stream, Big Island

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

25  Lihue, Kauai – NE
29  Oahu Forest NWR, Oahu – ESE
29  Makapulapai, Molokai – E
23  Lanai 1, Lanai – NE
31  Kealaloloa Rg, Maui – NNW
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

A cold front far northwest of Kauai…with a major rainmaker far east

 

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

A mix of high, middle and lower level clouds cover the state 

 

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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 Tuesday comments:  I’m here at home in upper Kula, Maui

It’s mostly cloudy with variable high and middle level clouds here in Maui County early this morning, with a low temperature of 53 degrees at my place, with the relative humidity 72 percent.

1205pm, it’s cloudy here in Maui County, and mostly dry at the time of this writing. The temperature here at my place in upper Kula is 69.4 degrees, with the RH 69%…compared to the Kahului AP at the same, which was 79 degrees with the RH 57%

625pm, a gloriously pink sunset…wow! The temperature here at my place is 59.5 degrees with a 67% RH (relative humidity)

826pm, the temperature here at my place has dropped to 53.4 degrees, with the relative humidity at 63%

Weather Wit of the day: Weather Forecaster – A person who is always right except for his or her timing

>>> Highest Temperature Tuesday, December 30, 2025 – 79 at Montecito, CA
>>> Lowest Temperature Tuesday, December 30, 2025 – minus 19 at Peter Sinks, UT

 

Hawaii’s Broad Brush Weather Overview: Moderate to locally breezy trade winds will focus showers over windward slopes as high clouds diminish Wednesday. A dissipating front will move across the islands Thursday night and Friday, leading to an increase in rainfall and stronger trade winds. Drier trade wind weather is favored on Saturday, followed by a potential increase in showers Sunday or Monday.

Hawaii’s Weather Details: Showers have diminished over most islands within a moderate to locally breezy trade wind flow this, though conditions continue to be somewhat gloomy due to persistent high clouds. The tail-end of a nearly stationary front is sitting about 200 miles north of Kauai, which is easing the local pressure gradient, driven by surface high pressure centered far to the north. As a result, trade winds have been holding at moderate strength, with a few exposed locales measuring breezy winds.

The trade wind flow carried in a diffuse band of moisture earlier, leading to a quarter to nearly a half inch of rainfall over windward areas from Big Island to Oahu. These modest showers are shifting to Kauai, where an increase in rainfall is expected into the night. A mid level ridge will maintain stable conditions, while a weakening subtropical jet stream continues to send high clouds overhead.

Aside from diminishing high clouds, little change is expected Wednesday and New Year’s Day. Trades will remain at moderate strength as the shallow front to the north is pushed toward the state, by building high pressure farther north. Little organized moisture is noted south of the front, suggesting a typical pattern of mainly windward and mountain showers. High clouds will thin considerably as the subtropical jet stream is displaced south of the islands.

The dissipating front will move down the island chain Thursday night and Friday, leading to increased showers and strengthening trade winds. The shallow band of moisture along the feature will reach Kauai around sundown on New Year’s Day, sag southward to Oahu and Maui County overnight, then reach Big Island on Friday. The remnant front will be quite shallow, and with a weak mid-level ridge holding, there will be no upper level support for heavier showers.

As a result, expect wet conditions windward, and as the surface high to the north strengthens, breezy trades will likely carry brief periods of showers over leeward areas from Kauai to Maui. Breezy trade winds should push much of the moisture clear of the islands on Saturday, with the highest chances for showers lingering on the windward side of the Big Island.

Uncertainty enters the picture by Sunday. The GFS and ECMWF models show a continued highly amplified pattern over the Pacific. This pattern features a splitting West Pacific jet stream carving out a deep trough, a ridge aloft north of Hawaii, and an upper level trough between the islands and the continental U.S.

The models are both intensifying the upper trough northeast of Hawaii late Sunday or Monday, as surface low pressure lingers west of Kauai, but the models have been inconsistent with the details and placement of key features. For now, the official forecast leans more toward the ECMWF solution, which keeps a stronger and less stable trade wind flow that favors windward rainfall.

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: Moderate to locally strong easterly trade winds return to the coastal waters and will continue through the week, as high pressure builds north of the islands. A Small Craft Advisory remains in effect for the typically windy waters around Maui County and the Big Island, and has been extended in time through Wednesday afternoon.

Overlapping moderate to large, medium period northwest (320-340 degree) and north-northwest (340-350 degree) swells will maintain advisory-level surf with very minor fluctuations through Wednesday. Recent buoy observations show that this swell is running around 2 feet above guidance at this time, so the High Surf Advisory for north and west facing shores of Niihau, Kauai, Oahu, Molokai, and north facing shores of Maui has been extended it in time through the day on Wednesday. This swell will then gradually decline from late Wednesday through the rest of the week, with surf falling back below advisory criteria at that time. Additionally, seas could flirt with Small Craft Advisory criteria across exposed waters during the peak of the swell.

Choppy east shore surf will continue though mid-week as locally breezy trade winds strengthen. Surf along south facing shores will remain tiny to small through the forecast period.

 

40+ Beautiful Places to Visit in Hawaii - Hawaii Aloha Travel



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 475 NM south of Diego Garcia

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

Tropical Cyclone 10S (Hayley)…is located approximately 137 NM east-northeast of Broome, Australia – Final Warning

https://www.metoc.navy.mil/jtwc/products/sh1026.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:  How Climate Policies that Incentivize and Penalize Can Drive the Clean Energy Transition

A new study from a team of researchers that includes faculty from the University of California San Diego and Princeton University shows how a mix of subsidies for clean energy and taxes on pollution can significantly reduce greenhouse gas emissions that cause climate change.

While these kinds of policy mixes are widely used in the real world, the the study, published in Nature Climate Change is the first to show how the combination of such policies can be simulated in economic models that are the backbone of nearly all climate policy discussions – including the recent United Nations Climate Change Conference in Brazil.

The results reveal that financial incentives can spark rapid adoption of cleaner technologies in the near term, but without policies that also punish polluters it won’t be possible to stop climate change.

Read more at: University of California San Diego