The latest update to this website was at 1113pm Wednesday (HST)

 

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

2.10  Mount Waialeale, Kauai
0.41  Lyon, Oahu
0.47  Puu Alii, Molokai
0.07  Lanai City, Lanai
0.55  Puu Kukui, Maui
2.07  Waiaha Stream, Big Island

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

24  Port Allen, Kauai – E
23  Kuaokala, Oahu – ESE
24  Molokai AP, Molokai – NE
27  Lanai 1, Lanai – NE
37  Na Kula, Maui – SE
31  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 are moving east

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

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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 clear to partly cloudy here in Maui County early this morning, with a low temperature of 50 degrees at my place, with the relative humidity 72 percent.

Weather Wit of the day: Weather Forecaster – One who climbs the ladder of success wrong by wrong

>>> Highest Temperature Tuesday, December 30, 2025 – 79 at Montecito, CA
>>> Lowest Temperature Wednesday, December 31, 2025 – minus 16 at Mount Washington, NH

 

Hawaii’s Broad Brush Weather Overview: Moderate to locally breezy trade winds will keep showers focused mainly over windward slopes as high clouds decrease later today. A dissipating cold front will move across the islands Thursday night into 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 through next Tuesday.

Hawaii’s Weather Details: High clouds continued to move from southwest to northeast over the state, leading to partly to mostly cloudy skies.

Models have changed very little for the short term forecast. Look for the high clouds to decrease during the day today, and that should extend into Thursday night. Clouds and showers will increase again Thursday night and Friday, as a band of moisture moves in from the northeast. This moisture is associated with the leading edge of stronger trade winds, and these trades will last into Saturday, before turning a little south of due east. This veering of the low level wind will occur as a surface high initially to our northeast extends southward.

Winds will become even a little more southeasterly Sunday through next Tuesday, as an upper level trough moves in from the northwest. This trough will help form a surface low also to our northwest, and is now agreed upon by both the GFS and ECMWF models. Even though both deterministic runs agree fairly well, there is always considerable uncertainty looking 6-7 days out, and this general solution is far from set in stone. With that said, increasing moisture drawn northward in advance of this trough, could lead to heavier precipitation in the early to middle part of 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: Moderate to locally strong easterly trade winds will continue through the week as high pressure builds north of the islands. A Small Craft Advisory was extended through Thursday for the typically windy waters around Maui County and the Big Island. Combined seas for coastal waters will peak just under the Small Craft Advisory threshold.

Overlapping moderate, medium period northwest (310-320 degree) and north-northwest (340-350 degree) swells will keep surf heights along north and west facing shores at advisory thresholds, then decline just under advisory levels early Thursday. Recent buoy obs continue to show the primary north-northwest swell running around 1 to 2 feet above the global wave models. Therefore the High Surf Advisory for north and west facing shores of Niihau, Kauai, Oahu, and Molokai and north facing shores of Maui and the Big Island will continue. A moderate, medium period north (360-020 degree) swell will then move into Hawaiian waters by Friday, possibly producing moderate surges in north facing harbors.

Choppy east shore surf will continue into the weekend as locally breezy trade winds continue. Surf along south facing shores will remain tiny to small through the forecast period.

Peak astronomical monthly tides may result in minor coastal flooding are possible from Thursday through early next week, and may be enhanced along north facing shores later this week due to the next north swell.

 

10,100+ Polynesian Woman Stock Photos, Pictures & Royalty-Free Images - iStock



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 543 NM south-southwest of Diego Garcia

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

Tropical Cyclone 11S…is located approximately 555 NM east of Cocos Islands

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:  Leaves’ Pores Explain Longstanding Mystery of Uneven Tree Growth in a Carbon-Enriched World

The mechanics of how water and carbon dioxide move in and out of plants greatly affects how trees grow in a carbon-dioxide-enriched environments.

The basics of photosynthesis are something that every student learns in school: carbon dioxide, water and light in; oxygen and sugar for growth out. In a world where atmospheric carbon dioxide levels are rising, it is plausible to think that trees and other plant life growth will rise in lockstep.

But that is not what observations have borne out. As global levels of carbon dioxide have risen, measurements of tree growth—and how much carbon they are storing for the long-term—have varied greatly. How much of that variance can be attributed to carbon dioxide levels has long been unknown.

Read more at: Duke University

Image: A highly magnified view of a single stoma on the leaf of a boat lily (Tradescantia spathacea). The stoma is opening and closing in response to changing levels of carbon dioxide and humidity.