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

 

The latest update to this website was at 541am Saturday morning HST


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

1.45  Mount Waialeale, Kauai
0.63  Kaala, Oahu
0.29  Puu Alii, Molokai
0.00  Lanai
0.80  West Wailuaiki, Maui
0.85  Kawainui Stream, Big Island


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

27  Lihue, Kauai – E
31  Oahu Forest NWR, Oahu – ESE
27  Molokai AP, Molokai – NE
20  Lanai 1, Lanai – NE
31  Na Kula, Maui – ENE
35  Lalamilo, 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 south 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261780620-20261781420-GOES18-ABI-HI-14-600x600.gif

Variable low clouds…high cirrus clouds mostly to the south 

 

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

504am, it’s partly cloudy here in upper Kula with calm winds, and a low temperature at my place of 55.5 degrees…with the relative humidity 78%

 

>>> Highest Temperature Friday, June 26, 2026 – 114 at Death Valley, CA
>>> Lowest Temperature Saturday, June 27, 2026 – 32 degrees near Wahsatch, UT

 

Hawaii’s Weather Highlights…as of Saturday morning: Moderate to breezy trades are expected to prevail today, slightly decrease on Sunday, then remain at mostly moderate speeds through late next week. Bands of low clouds and showers will periodically push through the islands, focusing primarily over windward and mountain areas during the overnight and early morning hours.

Weather Commentary…as of Saturday morning: A 1031 millibar high is centered around 1400 miles north of Honolulu, driving moderate to locally breezy trade winds across the island chain. Satellite imagery shows mostly cloudy conditions across much of the state, with cloud coverage the highest in windward and mountain areas. Radar imagery shows scattered showers moving into windward slopes and coasts, with a few showers spilling over to leeward communities at times.

High pressure will meander north and northeast of state during the next 7-days, keeping trade winds solidly in place. Moderate to breezy trades today and tonight, will ease slightly on Sunday, then remain at mostly moderate speeds Monday through late next week.

As for the remaining weather details, fairly typical summertime trade wind weather is expected through the period, with showers favoring windward and mountain areas, particularly during the night and early morning hours. A couple bands of enhanced moisture appear to target the state late Sunday night and Monday, and again Tuesday night through Wednesday night.

These bands will raise precipitable water values above 1.5 inches in most areas, and elevate inversion heights to between 10 and 12,000 feet, increasing coverage and intensity of showers along with the amount of leeward spillover. In addition, dewpoints are forecast to increase to around 70 or the lower 70’s beginning Monday and continuing through the middle of next week, making it feel more muggy across the island chain.

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 Saturday morning: A high pressure ridge far north of the Hawaiian Islands will remain anchored in place, keeping trade winds blowing through much of next week. The Small Craft Advisory (SCA) continues for Oahu Leeward Waters, all coastal waters and channels around Maui, and windier waters near the Big Island. This SCA will continue through tonight. Winds may slightly decrease from Sunday into Monday, but will likely remain at SCA levels for our typical windier waters near Maui and the Big Island.

A small, long period south swell will arrive and fill in today, peak on Sunday, then gradually decline through the first half of next week. This south swell energy will boost surf heights back up to near normal for this time of year.

Surf along east facing shores will remain rough and choppy, with a slight decline possible early next week, due to minor fluctuations of our trades. Surf heights along north facing shores will remain small to tiny through the first half of next week.

 

This Beautiful Hawaiian Nature Reserve Is An Iconic Must-Visit For Movie Lovers


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

Off of the southeastern coast of the U. S.:

A low pressure area is expected to form offshore of the southeastern coast of the United States along the western end of a frontal system early next week. Slow development of this system will be possible thereafter while it moves slowly westward.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 percent

 

>>> 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:

Shower and thunderstorm activity associated with a tropical wave located several hundred miles south-southwest of the southern tip of the Baja California Peninsula has increased slightly since yesterday. Gradual development of this system is possible during the next few days while the wave moves generally westward to west-northwestward. Environmental conditions are forecast to become less conducive for development by the second half of next week as the system moves over the western portion of the eastern North Pacific.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…medium…50 percent

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

 

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

Central and Western East Pacific:

Shower and thunderstorm activity associated with a tropical wave located several hundred miles south-southwest of the southern tip of the Baja California Peninsula has increased slightly since yesterday. Gradual development of this system is possible during the next few days while the wave moves generally westward to west-northwestward. Environmental conditions are forecast to become less conducive for development by the second half of next week as the system moves over the western portion of the eastern North Pacific.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…medium…50 percent

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

 

>>> Northwest Pacific Ocean: 

Tropical Cyclone 07W (Mekkhala)…is located approximately 84 NM east of Yokosuka, Japan – Final Warning

 

 

Tropical Cyclone 08W (Higos)…is located approximately 169 NM east-northeast of Yokosuka, Japan – Final Warning

 

 

>>> 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:  Farming Technique Could Curb Devastating Tropical Disease

Despite decades of mass drug administration campaigns, schistosomiasis remains one of the world’s most widespread neglected tropical diseases. Rice farmers and their families are particularly at risk, as the parasitic worms that cause the disease are spread by freshwater snails found in the standing water of rice fields.

New research published in Nature Sustainability has explored how rice-fish coculturing – an intervention technique that introduces fish into the rice fields – could help reduce disease incidence and poverty along the northern Senegal River basin, a hot spot for schistosomiasis.

“This research points to a new way of thinking about agriculture,” said study coauthor Giulio De Leo, professor of oceans and of Earth systems science in the Stanford Doerr School of Sustainability and co-director of the Stanford program for Disease Ecology in a Changing World. “It’s about farming systems that not only grow more food, but also improve human health and support the environment.” The research received funding from the Stanford Sustainability Accelerator based in the Doerr School. Years earlier, De Leo and Stanford colleagues received funding from the Stanford Woods Institute for the Environment for a related project to reintroduce native snail-eating prawns to local water sources.

Read More at: Stanford University