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

 

The latest update to this website was at 850pm 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.

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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 

 

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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%

507pm, it’s mostly sunny here on Maui, just about what one would expect during this early summer period.

742pm, it’s getting dark, and there’s still an orange glow in the western horizon, and I can see the planet Venus as the first planet/star of the night.

830pm, it’s partly cloudy here in upper Kula, with calm winds, and the temperature is 63.5 degrees at my weather tower.

 

>>> 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 locally breezy trades will slightly decrease Sunday, then remain at mostly moderate speeds through late in the upcoming 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.

A couple bands of enhanced moisture will move through the islands Sunday night through Thursday morning, bringing an increase in shower coverage and intensity, with some locally heavy rainfall possible. In addition, humidity levels will rise, making the first half of the upcoming work week feel rather muggy across the island chain.

Weather Commentary…as of Saturday evening: Currently at the surface, a 1035 millibar high is centered around 1700 miles north-northeast of Honolulu, driving moderate to locally breezy trade winds across the island chain. Satellite imagery shows partly to mostly cloudy conditions across the state, with cloud coverage the highest in windward and mountain areas, as well as leeward sections of the Big Island. 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 through the period. Moderate to locally breezy trades will ease slightly on Sunday, then remain at mostly moderate speeds Monday through late in the upcoming work week. As for the remaining weather details, fairly typical summertime trade wind weather is expected, 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 during the new week. The first batch of enhanced moisture is evident in satellite imagery approaching about 300 miles east of the Big Island. This band of moisture is expected to ramp-up shower coverage and intensity as it moves from east to west across the islands Sunday night through Monday evening.

The next area of enhanced moisture currently near 1000 miles east of the state, is forecast to move through the islands Tuesday night through early Thursday, increasing shower coverage and intensity once again. Both these bands will raise precipitable water values into the 1.5 to 2.0 inch range, and elevate inversion heights to between 10 and 12,000 feet. Some locally heavy rainfall can`t be ruled out as these bands of moisture move through, particularly the second batch of moisture.

That said, with the trades in place, a widespread flash flood threat is not expected, but some minor flooding could very well necessitate flood advisories during this time. Additionally, dewpoints are forecast to increase to around 70 or the lower 70’s beginning Monday and continuing through the middle of the week, making it feel more muggy across the island chain.

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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 through much of the upcoming work 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 from Sunday into Monday, but will likely remain at SCA levels for our typical windier waters near Maui and the Big Island.

The current small, long period south swell will peak Sunday, before gradually declining through the first half of the new week. Surf along east facing shores will remain rough and choppy, with a slight decline possible early in the week due to minor fluctuations of our trades. Surf heights along north facing shores will remain small to tiny through the first half of the 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 in a couple of days. Gradual development of this system will be possible thereafter while it drifts 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

Western East Pacific:

Showers and thunderstorms associated with a tropical wave located well 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 by the middle of next week while the system 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…20 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