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

 

The latest update to this website was at 614am Saturday morning HST


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

2.28  Mount Waialeale, Kauai
0.24  Tunnel RG, Oahu
0.31  Puu Alii, Molokai
0.00  Lanai
2.00  West Wailuaiki, Maui
3.91  Kawainui Stream, Big Island


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

18  Nawiliwili, Kauai – NE
31  Kuaokala, Oahu – NE 
30  Makapulapai, Molokai – ESE
37  Lanai 1, Lanai – NE
39  Kealaloloa Rg, Maui – NE
38  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 (out of operation). 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

  Thunderstorms south associated with two tropical disturbances…one of which is Invest 90C (neither of which will threaten our islands)

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261920630-20261921420-GOES18-ABI-HI-14-600x600.gif

Variable low clouds…high clouds in the vicinity too

 

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

510am, it’s mostly clear with high cirrus clouds here in upper Kula with calm winds, and a low temperature at my place of 57.5 degrees…with the relative humidity 83%

 

>>> Highest Temperature Friday, July 10, 2026 – 118 at Death Valley, CA
>>> Lowest Temperature Saturday, July 11, 2026 – 29 degrees at Peter Sinks, Utah

 

Interesting Web Blog: Mauka Showers…Hawaii’s 2026 Dry Season – A Midpoint Update

 

Hawaii’s Weather Highlights…as of Saturday morning:  Strong high pressure far north of the state will produce breezy trade winds through the weekend into the first half of next week. A slight weakening and veering of the trade winds is possible during the second half of next week, as the high pressure moves northeast and low pressure potentially develops in the tropics to the south-southwest.

An increase in moisture will bring enhanced showers to windward and mountain locations tonight into Sunday morning. The next plume of moisture could then arrive by the middle of next week.

Weather Commentary…as of Saturday morning: Radar and satellite imagery shows some scattered showers moving over windward areas, with windward Big Island receiving the most. The high pressure to the north will keep the trades blowing through the first part of next week, bringing a rather typical summer pattern.

An increase in low level moisture will arrive Sunday, resulting in an increase in both the coverage and strength of showers. This should also increase the number that make it over to leeward areas. There may be additional periods of increased moisture next week, but specific details aren’t available just yet.

Long range model guidance indicates that the strong high pressure to our north will shift east and weaken later next week. At the same time, the tropics are showing signs of life, with potential development to our south-southwest. At this time it is unclear if any will will effect the state. The GFS solution has a system developing out of the deeper tropics and moving southwest of our offshore waters next week. This would bring a wide swath of deep tropical moisture over the state, however the ECMWF and google deepmind models indicate a system developing further west.

Due to these discrepancies and uncertainty, it looks as if we may end up seeing a modest increase in trade wind showers next week. Longer range models indicate that the last two weeks of the month may also bring an environment supportive of further development, but it is way too early to have any details in regard to tropical cyclone activity. However, now would be a good time to make sure you are prepared for what could prove to be an active El Nino tropical cyclone season.

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: Some waters may drop below SCA levels tonight and tomorrow, but overall the models indicate winds staying up near SCA levels across more than just the typical windier waters.

Strong high pressure will remain anchored far north of the state, generating fresh to strong trade winds. These trades will weaken a bit early in the upcoming new week, that will likely lead to the SCA being scaled back to the windier waters and channels around Maui County and the Big Island.

The current small medium-period south-southwest (190-200 degrees) swell will hold today just below the summer average. A small to moderate, long-period southwest swell (220 degrees) is expected to fill in late today through Monday, which will boost surf through early next week.

Surf along east-facing shores will remain rough and choppy, as fresh to strong trades hold. A series of small, moderate period west (270 to 280 degrees) swells will hold into early next week, sourced from Typhoon Bavi in the far western Pacific. No significant north or northwest swell are expected, so surf along north facing shores is expected to remain flat to tiny.

Higher than normal high tides are expected, with coastal flooding possible due to upcoming King Tides, particularly Monday through Wednesday. Interests immediately along the coasts in low-lying or vulnerable areas should continue to monitor forecasts.

 

Private Tours & Vacations to Hawaii | Untold Story Travel


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 cyclones

>>> Offshore of Southwestern Mexico:

An area of low pressure is expected to form over the next couple of days, several hundred miles south-southwest of the southwestern coast of Mexico. Environmental conditions appear favorable for gradual development thereafter, and a tropical depression is likely to form by mid-next week while the system moves generally west-northwestward.

* Formation chance through 48 hours…low…20 percent
* Formation chance through 7 days…high…80 percent 

 

>>> Central and Western East Pacific:

A tropical wave located well southwest of the Baja California peninsula is producing disorganized showers and thunderstorms. Some slow development of this system is possible while it moves slowly west-northwestward.

* 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)

 

Central Pacific: There are no active tropical cyclones

>>> South of the Hawaiian Islands:

Invest 90C

A trough of low pressure, located several hundred miles south of the Hawaiian Islands, is producing a small area of showers. Further development of the system appears to be diminishing while it moves generally westward across the central Pacific, remaining well south of the Hawaiian Islands.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…30 percent

 

>>> Well Southeast of the Hawaiian Islands:

A trough of low pressure located several hundred miles southeast of the Hawaiian Islands is producing disorganized showers and thunderstorms. Environmental conditions appear favorable for gradual development of this system, and a tropical depression could form by mid-next week while it moves generally westward across the central Pacific, remaining well south of the Hawaiian Islands.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…medium…40 percent

 

Northwest Pacific Ocean: 

Tropical Cyclone 09W (Bavi)…is located approximately 327 NM west-northwest of Kadena AB

https://www.metoc.navy.mil/jtwc/products/wp0926.gif

https://www.metoc.navy.mil/jtwc/products/09W_111200sair.jpg

 

>>> 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 Color of Penguin Poo: Satellites Reveal the Chilling Truth of Global Warming’s Impact on an Iconic Polar Species

Scientists study poop patterns of Adélie penguin colonies across all of Antarctica over a 30-year span using Landsat satellite images, a first for capturing food-web and population trends at continental and decadal scales relative to climate change.

Scientists from a handful of universities across the country have made innovative use of satellite images from NASA: to determine the diet of Antarctic Adélie penguins across the continent by studying their icy feces with the fidelity and frequency that could only be captured by space technology.

The team, whose new study appears in Current Biology, found satellite images to be an ideal way to study colonies across the continent and over the span of decades to figure out what the mid-sized, tuxedo-patterned seabirds eat. This provided measurable insights into how their diets and population correlate to climate-change impacts like shrinking sea ice.

What they found is a concerning trend where global warming is once again threatening an iconic polar species: Over a 30-year period, Adélie penguins in places with more sea ice ate more fish. In years and places with less sea ice, they relied more heavily on krill.

Read More: University of California – Santa Cruz

Image: Nesting Adélie penguins on Antarctica’s King George Island