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

 

The latest update to this website was at 510pm Saturday evening HST


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

0.06  Kilohana, Kauai
0.03  Waianae Valley, Oahu
0.08  Honolimaloo, Molokai
0.00  Lanai
0.22  Kahikinui 1, Maui
1.49  Waiaha Stream, Big Island


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

15  Lawai, Kauai – ESE
25  Kuaokala, Oahu – NNE 
22  Molokai AP, Molokai – NE
17  Lanai 1, Lanai – NE
24  Kealia Pond, Maui – NNE
23  Hokuloa, 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

 

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Cold front northwest…thunderstorms far southeast (Tropical Disturbance)

 

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Variable low clouds 

 

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https://radar.weather.gov/ridge/standard/PHKI_loop.gif

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Localized showers 

 

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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

It’s mostly clear, with calm winds at my place, and with a chilly low temperature of 48.5 degrees and the relative humidity is 78%

1211pm, a few clouds here and there on Maui, although mostly sunny conditions prevail at the time of this writing.

250pm, it’s cloudy and we’re getting a very light shower here in upper Kula, and it looks as if there are showers falling elsewhere here on Maui too.

507pm, we had a couple of light showers here at my place this afternoon, although they’ve backed off now. It’s been a rather mild afternoon, in terms of warmth, as opposed to afternoons with abundant sunshine beaming down.


>>> Highest Temperature Saturday, June 13, 2026 – 119 at Death Valley, CA
>>> Lowest Temperature Saturday, June 13, 2026 – 25 degrees near Redfeather Lakes, CO

 

>>> Interesting Web Blog: Mauka Showers…Central North Pacific Tropical Cyclone Tracks in Strong El Niños, Part 2 – The Late Bloomer Years

 

Hawaii’s Broad Brush Weather Overview…as of Saturday evening: For the rest of this afternoon and early evening, isolated afternoon showers will be mainly limited to interior regions and along mountain slopes. Expect a slight increase in shower activity along windward areas Sunday into Monday, as trades strengthen and an area of marginally enhanced moisture pushes across the state. From Tuesday through Friday, there will be a return to light winds with afternoon sea breeze development and mainly interior showers.

Weather Details for the Hawaiian Islands…as of Saturday evening: Light showers were mainly over Maui, with a bit less cloudiness than usual in most windward areas. Winds were light, averaging 5 to 15 mph. Sea breezes had developed on the leeward side of most islands.

A weak surface pressure gradient was leading to healthy sea breeze development across most leeward areas, but this will change tomorrow and Monday, as trade winds pick back up a bit. This will shift the focus of showers to windward and mountain areas for the next couple of days. A band of moisture is forecast to move in from the east Sunday night, enhancing overnight showers.

The surface gradient is expected to weaken Tuesday and remain weak through Friday, leading to a return of sea breezes from late morning to early evening. This will result in higher-than-normal chances of showers in leeward areas once again. Moisture is forecast to be higher over the eastern half of the state after Monday, so that`s where the best chance of showers should develop.

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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 Environmental Conditions…as of Saturday evening: Gentle to moderate east-northeasterly winds are expected today, as a weak front passing far north of the state displaces the ridge, and keeps the trade winds tempered. Moderate to fresh easterly trades will return Sunday through early next week, as the surface ridge strengthens, but remains well north of the area.

A Coastal Flood Statement has been issued for isolated minor coastal flooding of vulnerable low-lying coastal roadways, docks, boat ramps and other coastal infrastructure. Peak monthly high tides combined with water levels that are running higher than predicted will lead to minor flooding potential around the daily peak tide, which will be during the late afternoon and early evening hours, through at least Tuesday.

Surf along south and west-facing shores will begin to trend up by this afternoon as forerunners arrive from a large, long-period swell originating from southeast of New Zealand. This swell peaked at the American Samoa buoys around 12 feet 17 seconds Thursday afternoon. Surf will continue to trend up tonight, likely reaching advisory levels on Sunday, before peaking Sunday night into Monday near warning levels (but most likely to remain at high-end advisory levels).

This swell will also coincide with the peak monthly tides which will add the potential for significant wave runup on top of the aforementioned minor coastal flooding potential during the first half of next week. South shore surf will remain elevated through much of next week, due to the slow decline of this large south swell and a series of continued overlapping southerly swells.

Very little swell energy is arriving along north facing shores, keeping surf tiny to flat. A small bump in surf is possible for north-facing shores early next week, with the arrival of a small northwest swell and a smaller north swell. Weaker than average trade winds near and upstream of the islands, will produce below average surf along east-facing shores through the weekend into early next week.

 

Golden hour on one of the best secret beaches in Oahu


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

 

>>> Gulf of America: There are no active tropical cyclones

Southwestern Gulf:

A broad area of low pressure just offshore of eastern Mexico is producing disorganized shower and thunderstorm activity. Significant development is not anticipated before the low moves inland over eastern Mexico by early Sunday. The system could re-emerge over the northwestern Gulf of America on Tuesday or Wednesday while interacting with a frontal boundary, but conditions there are expected to be only marginally conducive for development.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…low…20 percent

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

 

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

Well Southwest of the Baja California Peninsula:

An area of low pressure located well southwest of the Baja California Peninsula is producing showers and thunderstorms that have become somewhat better organized since earlier today. Environmental conditions could support some gradual development during the next couple of days while the system moves eastward to east-northeastward at 5 to 10 mph.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…low…30 percent

 

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

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

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

 

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

>>> 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: WSU Study Offers Realistic Look at the Future of Sustainable Aviation Fuel

The United States could feasibly produce enough sustainable aviation fuel to meet roughly two-thirds of its 2030 federal target, but getting there will require overcoming major hurdles, according to a new Washington State University-led study.

Published in the March edition of Biomass and Bioenergy, the study offers one of the most detailed looks yet at the nation’s sustainable aviation fuel, or SAF, industry. The work is part of a broader body of research at WSU that has helped position the university as one of the leading research institutions studying sustainable aviation fuel.

The researchers found that while domestic production is expanding quickly, the United States remains unlikely to meet its goal of producing 3 billion gallons of sustainable aviation fuel annually by 2030 without additional support and continued industry investment.

The study found that the most optimistic scenario projects domestic SAF production could reach about 2.1 billion gallons annually by 2030, roughly two-thirds of the federal target, though substantially lower production levels may be realized depending on market conditions, project delays and policy support.

Read More: Washington State University