The latest update to this website was at 605pm Wednesday (HST)

 

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

0.43  Mount Waialeale, Kauai
0.21  Moanalua RG, Oahu
0.12  Puu Alii, Molokai
0.00  Lanai 1, Lanai
0.72  West Wailuaiki, Maui
1.23  Kaiholena, Big Island

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

22  Port Allen, Kauai
30  Kuaokala, Oahu
28  Molokai AP, Molokai
30  Lanai 1, Lanai
42  Na Kula, Maui
25  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

Thunderstorms south…upper level low moving away to the west…cold front far northwest 

 

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

 Variable low clouds…along with higher clouds over the islands 

 

 

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 in Bend, Oregon with my friend Bob Earle…although, Bob and I will be driving the 9 hours from here in Bend down to our friend Linda’s place in Marin County today. Thus, I won’t be able to update the weather information until I set my computer up late this afternoon or even early this evening.

It’s mostly cloudy here in Bend early this morning with sprinkles. The low temperature was 34.5 degrees.

I’m in Corte Madera, Marin C0unty, California this evening, after the 9 hour drive down here in Bob’s car. It rained off and on the entire way, with a couple of very heavy downpours in far northern California.

Weather Wit of the day: Rainy October – Indian Bummer

>>> Highest Temperature Wednesday, November 5, 2025 – 94 at Rio Grande Village, Texas
>>> Lowest Temperature Wednesday, November 5, 2025 – 12 near Angel Fire, New Mexico



Monthly Precipitation Summary

Month: October 2025

Prepared: November 4, 2025

Headline: October rainfall still largely below average state-wide, despite a better showing for Oahu and Big Island over September’s amounts.

The month began with moderate trades and increased moisture, bringing enhanced windward showers, especially on O?ahu and Molokai. As high pressure weakened between the 2nd and 5th, trades shifted southeast and lightened, allowing land and sea breezes to form. This shifted shower activity to interior and upslope areas, mainly southeast-facing slopes, though rainfall stayed generally light (around a quarter inch or less).

A weakening surface trough lingered over the western half of the state from the 6th to the 10th, bringing higher humidity and periods of light to occasionally moderate showers, most notably on Kauai where isolated totals reached 1 to 2 inches. Light southeasterly winds supported localized heavy rainfall over the southern coastal and upslope areas of Kauai and Oahu during this time. A Flood Advisory was issued for the island of Oahu for rainfall rates of 1 to 2 inches per hour. Moisture decreased after the 11th, though light winds continued to support afternoon inland showers through the 14th.

Moderate to breezy trades returned mid-month along with an upper low near Kauai, producing several days of wetter weather from the 16th into the 21st. Heavy rain prompted the issuance of a Flood Advisory on the Kona slopes of the Big Island on the 16th for rainfall rates of up to 1 inch per hour and for the island of Kauai on the 17th for rates of 1 to 2 inches per hour. A drying trend took hold from the 22nd to 24th as trades strengthened into the breezy to locally strong range, leading to periods of critical fire weather conditions across interior and leeward zones.

Deep tropical moisture was drawn northward into the Big Island beginning on the 24th and spread westward across the state. The heaviest rainfall occurred over windward areas of the Big Island and Maui, while cold temperatures aloft allowed for wintry precipitation on the Big Island summits. Some leeward and higher terrain areas received 1 to 2 inches of rain, prompting a Flood Advisory for Kauai during early morning on the 28th. Trade winds weakened again over the last few days of the month as a front lingered well north of the state. On the 29th, enhanced showers from lingering instability from an upper trough brought heavy rainfall to the Big Island from Hilo around South Point to Kona, triggering a Flood Advisory. Conditions trended drier to close out the month under light to moderate trades.

 

Hawaii’s Broad Brush Weather Overview: Trade winds will taper off through Friday as a front approaches the islands from the northwest. The front will move north to south across the islands chain Saturday night through Monday, bringing rainfall focusing on windward slopes. Strong trade winds will follow the front that will continue into next week.

Hawaii’s Weather Details:  Satellite shows high clouds remaining across most of the state, but beginning to thin out. A few low clouds and isolated showers are blowing in from the east with moderate to locally fresh trade winds. Expect a mostly dry night with any clouds and precipitation focused windward.

A stalled, weak trough to the north will begin to move northwest tonight in response to an approaching cold front. Winds will veer east-southeasterly Thursday before becoming light and variable by Friday. High clouds will likely lift away northeastward at this point, and localized land and sea breezes will bring a few afternoon clouds and clear nights.

The cold front is expected to arrive on Kauai Saturday night, and then begin slowing down and weakening as it moves down the island chain. Oahu and Maui will be next on Sunday, and the Big Island Sunday night into Monday. The ECMWF model is a bit slower by the time it reaches the Big Island, as it leans more towards Monday.

Strong trade winds over-runing the front will bring mostly windward showers, but many of the showers will blow over to the leeward sides of the smaller islands. There won’t be any upper level support with this frontal passage. Rainfall is expected to be light to moderate but persistent and moving along, limiting any flood potential.

Breezy trade winds will continue behind the front into next week as strong high pressure system sets up far north of the state. Conditions will remain stable, with scattered low clouds and showers.

Fire weather: Winds and relative humidity values are expected to remain below critical fire weather thresholds into the weekend. The inversion will be between 6,500 to 7,500 feet, as a mid level ridge builds overhead, further stabilizing the atmosphere and limiting vertical cloud growth.

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 high pressure ridge north of the Hawaiian Islands will build, increasing the trade winds into the fresh to locally strong range into tonight. Winds then decrease from Thursday onward as a cold front approaches the region from the northwest. These stronger winds and higher seas will produce Small Craft Advisory (SCA) conditions for most coastal waters into Thursday. The current SCA was expanded to include windward Oahu and Kauai waters for seas, and extended in time through Thursday.

Trade winds will gradually decline from Thursday through Friday as a cold front north of the Islands moves into the area from the north. Models show this cold front weakening and stalling over the northwestern and central waters from Saturday to Sunday. Stronger northeast winds will blow across waters north of the front, with moderate easterly winds south of the frontal boundary.

A gale force low that passed far north of the state on Monday has produced a moderate to large medium period north-northwest (340-350 degree) swell that, will build into Hawaiian waters through Thursday. Surf heights along exposed north and west facing shores will exceed surf advisory thresholds into Thursday, before steady declining. A High Surf Advisory (HSA) was issued for these areas. An overlapping north-northwest swell will move into the region by Friday, helping to maintain moderate surf heights along north and west facing shores.

In the longer range forecast, a deep low pressure system is expected to develop to our north and northeast from Friday into Saturday. This low will likely generate a large north-northeast (020-030 degree) swell late this weekend, easily exceeding HSA thresholds. Due to the swell angle, heavy surges will be possible along north facing harbors such as Kahului and Hilo on Sunday.

South facing shores will remain small throughout this week. A small long-period south-southwest swell will boost south shore surf heights from Thursday into the weekend, along with a larger, out of season south swell, possible by early next week. Surf for east facing shores should be rough and choppy Thursday with the increasing trade winds and could also see a little bit of north wrap from the medium period north-northwest swell.

Peak monthly tides combined with water levels that are running higher than predicted will lead to minor flooding along the shoreline and in low-lying coastal areas. The greatest chance for coastal flooding will occur during the daily peak high tide during the early morning hours, and along north facing shores exposed to the large north-northwest swell.



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclone

Tropical cyclone formation is not expected during the next 7-days.

Caribbean Sea:  There are no active tropical cyclone

Tropical cyclone formation is not expected during the next 7-days.

Gulf of America:  There are no active tropical cyclone

Tropical cyclone formation is not expected during the next 7-days.

 

Northeastern Pacific:  There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7 days.

North Central Pacific: There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7 days.

Here’s the link to the National Hurricane Center (NHC)

 

Northwest Pacific Ocean: 

Tropical Cyclone 31W (Kalmaegi)…is located approximately 266 NM southeast of Da Nang, Vietnam

https://www.metoc.navy.mil/jtwc/products/wp3125.gif

Tropical Cyclone 32W (Fung-wong)…is located approximately 120 NM east-northeast of Yap  

https://www.metoc.navy.mil/jtwc/products/wp3225.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

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

 

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New enzyme motif shows how ocean microbes are evolving to digest plastic — and could help future cleanup efforts.

Deep within the world’s oceans lurk marine bacteria armed with plastic-munching enzymes, their evolution seemingly sculpted by our synthetic castaways.

A global survey of oceanic life from researchers at KAUST shows that these microbial recyclers are not only widespread, but genetically primed to feast on polyethylene terephthalate (PET), the durable polymer found in everything from soda bottles to clothing.

Their secret weapon is a telltale structural stamp on the PET hydrolase enzyme, known as PETase: the M5 motif.

Read More: King Abdullah University of Science & Technology (KAUST)

Image: Bacteria armed with the M5 motif on their PETase enzyme can feast on plastic, a trait now seen thriving across the world’s oceans.