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

 

The latest update to this website was at 506pm Saturday evening HST


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

1.99  Mount Waialeale, Kauai
0.52  Schofield East, Oahu
0.27  Puu Alii, Molokai
0.00  Lanai
0.49  West Wailuaiki, Maui
1.07  Kawainui Stream, Big Island


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

33  Port Allen, Kauai – NE
35  Kuaokala, Oahu – ENE
31  Molokai AP, Molokai – NE
29  Lanai 1, Lanai – NE
39  Kahului AP, Maui – NE
35  Pali 2, 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 

 

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Variable low clouds 

 

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…very few

 

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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 Saturday, June 27, 2026 – 113 at Rio Grande Village, CA
>>> Lowest Temperature Saturday, June 27, 2026 – 32 degrees near Wahsatch, UT

 

Hawaii’s Weather Highlights…as of Saturday evening: Moderate to breezy trades will persist through tonight, slightly decrease on Sunday, then remain at mostly moderate speeds through late next week. Bands of low clouds and showers will periodically push across the islands, focusing primarily over windward and mountain areas, during the overnight and early morning hours. Some enhancement to the showers may occur at times Monday through Wednesday as deeper pockets of low level moisture move through.

Weather Commentary…as of Saturday evening: Moderate to breezy trade winds continued across the islands, driven by a rather strong 1034 millibar surface high centered well north-northeast of the state. Patches of low clouds, caught in this trade flow, can be seen pushing towards the windward coasts from well upstream of the islands. Radar has picked up on a few light showers embedded in these low clouds, but nothing particularly of note. Clouds and showers have been limited along windward areas and mountain slopes, with rainfall totals generally topping out at a few hundredths of an inch.

Meanwhile, fountaining from episode 50 of Kilauea`s eruption on the Big Island officially began at 1010am this morning. VOG will likely affect southern portions of the Big Island, especially over the next several hours. Fortunately, the deep east-northeast trade wind flow should keep most of the VOG away from the smaller islands.

Tonight though Sunday, the aforementioned surface high meanders a tad northward, allowing local pressure gradients to ease slightly and trades to gradually trend weaker. Typical of this pattern, shower activity will be most prevalent during the night and early morning hours, with less coverage during midday hours. From the south Kona slopes to Pahala on the Big Island, however, expect greater cloud cover and shower activity during the afternoons as local sea breezes push upslope.

Seasonal summertime moderate trades will dominate all next week, as a surface high pressure remains anchored well north of the state. Monday through Wednesday, both the GFS and ECMWF models show a deepening boundary layer, at times, as a few deeper pockets of low level moisture carry in on the trades. Models indicate the boundary layer briefly rising to between 8,000 and 10,000 feet, which would allow for more trade showers to pass over onto the leeward sides. For Thursday and beyond, a more seasonal shallower moisture layer returns. Meanwhile, a weak upper level low forming to the northwest of Hawaii, may bring periods of increased mid to upper level clouds from the southwest.

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 evening: A high pressure ridge far north of the Hawaiian Islands will remain anchored in place, keeping trade winds blowing across the region 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. Winds may slightly decrease Sunday into Monday, but will likely remain at SCA levels for our typical windier waters near Maui and the Big Island through this period.

The current small, long period south swell will peak on Sunday, before gradually declining through the first half of next week. 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 broad 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. Gradual 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:

Showers and thunderstorms associated with a tropical wave located several hundred miles southwest of the southern tip of the Baja California Peninsula remain disorganized. Gradual development of this system is possible during the next few days, and a tropical depression could form around the middle of next week while the wave moves generally westward to west-northwestward. Environmental conditions are forecast to become less conducive for development by the second half of the 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 cyclone

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

 

>>> 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