Glenn James
Hawaii Weather Today
Creator, Author, and Administrator for 30 years

 

The latest update to this website was at 913am Thursday morning HST


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

0.93  Mount Waialeale, Kauai
0.63  Kahana, Oahu
0.07  Puu Alii, Molokai
0.00  Lanai
0.83  West Wailuaiki, Maui
1.33  Honolii Stream, Big Island


The following numbers represent the strongest wind gusts (mph) Thursday morning: 

21  Port Allen, Kauai – SE
35  Oahu Forest NWR, Oahu – SE
23  Makapulapai, Molokai – E
21  Lanai 1, Lanai – NE
33  Kealaloloa Rg, Maui – NNE
32  Puuloa, Big Island – NE


Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the (~10,023 feet high) Haleakala Crater 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 northwest…thunderstorms far southwest 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261761030-20261761820-GOES18-ABI-HI-14-600x600.gif

Variable low clouds…higher clouds locally

 

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

Localized showers 

 

https://www.weather.gov/wwamap/png/hfo.png

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




~~~ Hawaii Weather Narrative ~~~

 

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

454am, it’s clear here in upper Kula with calm winds, and a low temperature at my place of 53 degrees…with the relative humidity 79%

 

>>> Highest Temperature Wednesday, June 24, 2026 – 116 at Death Valley, CA
>>> Lowest Temperature Thursday, June 25, 2026 – 35 degrees at Peter Sinks, UT

 

Hawaii’s Weather Highlights…as of Thursday morning: Moderate to breezy trade winds can be expected through the weekend, and likely into the first half of next week, pushing showers over mostly windward and mountain areas. These showers will be more active during the night time and early morning hours. A mid level and upper level trough could occasionally allow some of these showers to be a little heavier than normal.

Weather Commentary…as of Thursday morning: An upper level low centered several hundred miles north of Hawaii, is producing bands of cirrus cloud cover over the islands of Kauai and Oahu, and working to enhance trade wind shower activity in the vicinity this morning. Surface high pressure centered far north of the state is also driving breezy easterly trade winds, which will carry pockets of moisture and low clouds through the weekend.

Nighttime and early morning hours along windward slopes will be the prime time and location for the majority of the showers. Isolated leeward showers will also be possible across the smaller islands, and along the Kona slopes during the afternoons. The surface high will remain nearly stationary into next week, while the upper low drifts slowly to linger over the Northwestern Hawaiian Islands this weekend into next week.

Long range guidance suggests another influx of moisture arriving next week. At least the first half of the week looks to be humid, with increased chances for precipitation and heavier rain showers, especially by mid-week, as a low-level trough tracks east to west across the region. There are some differences in model solutions regarding trade wind speeds, due to the forecast strength and position of the high pressure to the north, especially by mid-week.

https://www.weather.gov/images/hfo/graphics/npac.gif


Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Here’s the latest Weather Map / Looping Surface Precipitation…through the next 8-days / Vog Map

 

Marine Conditions…as of Thursday morning: High pressure to the north will dominate through at least the first half of next week, keeping moderate to locally strong trade winds in place across Hawaiian waters. A Small Craft Advisory (SCA) remains in effect for the typically windier waters around Maui and the Big Island. Although the SCA goes through Friday afternoon, it will likely be extended through the weekend.

A long period south swell will peak today, with head high to overhead surf heights at most exposed south shore surf breaks, then slowly decrease Friday and Saturday. Another pulse of south swell energy will then arrive on Saturday and peak by Sunday, before gradually declining next week.

Surf along east facing shores will remain rough and choppy into the weekend as breezy trades persist. Surf heights along north facing shores will remain small to tiny through the first half of next week.

 

Kauai


World-wide Tropical Cyclone Activity


>>> Here’s a link to the latest Pacific Disaster Center’s Weather Wall


>>> Atlantic Ocean: There are no active tropical cyclones

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

>>> Caribbean Sea: There are no active tropical cyclones

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

>>> Gulf of America: 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)

 

>>> Northeast Pacific: There are no active tropical cyclone

Central and Western East Pacific:

A tropical wave centered several hundred miles south of southwestern Mexico is producing disorganized showers and thunderstorms. This system is forecast to encounter more favorable conditions for development over the weekend across the central portion of the East Pacific basin. A tropical depression is likely to form by the early to middle part of next week while the wave moves westward to west-northwestward at 10 to 15 mph over the west-central eastern Pacific.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…high…80 percent

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

 

>>> Central Pacific: There are no active tropical cyclones

Central and Western East Pacific:

A tropical wave centered several hundred miles south of southwestern Mexico is producing disorganized showers and thunderstorms. This system is forecast to encounter more favorable conditions for development over the weekend across the central portion of the East Pacific basin. A tropical depression is likely to form by the early to middle part of next week while the wave moves westward to west-northwestward at 10 to 15 mph over the west-central eastern Pacific.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…high…80 percent

Here’s the link to the Central Pacific Hurricane Center (CPHC)

 

>>> Northwest Pacific Ocean: 

Tropical Cyclone 07W (Mekkhala)…is located approximately 105 NM southwest of Kadena AB

https://www.metoc.navy.mil/jtwc/products/wp0726.gif

 

Tropical Cyclone 08W (Higos)…is located approximately 507 NM southeast of Kadena AB

https://www.metoc.navy.mil/jtwc/products/wp0826.gif

 

>>> Southwest Pacific Ocean: There are no active tropical cyclones

>>> North and South Indian Oceans / Arabian Sea: There are no active tropical cyclones

Here’s the link to the Joint Typhoon Warning Center (JTWC)



Interesting:  The Impact of Global Warming on Fish Reproduction May be Temporary

In many fish species, water temperature determines the sex of the fry. This biological mechanism threatens to wipe out entire populations due to a shortage of females in the face of global warming. However, an international study conducted in Spain, France, and Brazil found that this well-known masculinization effect can be offset over generations. In a ten-year experiment involving more than 3,000 European seabass (Dicentrarchus labrax), scientists observed that the initial high proportion of male births under intense heat was reversed by the third generation, with more females being born.

The results were published in March in the journal Global Change Biology.

“We observed that the effects of warming aren’t cumulative for some strains of this species, which gives us hope regarding the impact of climate change on fish, at least as far as reproductive aspects are concerned,” says Maira da Silva Rodrigues, co-author of the study, which was conducted during her doctoral studies at the Botucatu Institute of Biosciences of São Paulo State University (IBB-UNESP) in Brazil with a scholarship from FAPESP.

Read More at: Fundação de Amparo à Pesquisa do Estado de São Paulo

The European sea bass (Dicentrarchus labrax) is a distant relative of the fish known as robalo in Brazil