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

 

The latest update to this website was at 512am Saturday morning HST


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

2.13  Mount Waialeale, Kauai
0.55  Moanalua RG, Oahu
0.12  Puu Alii, Molokai
0.00  Lanai
0.52  Puu Kukui, Maui
3.57  Laupahoehoe, Big Island


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

28  Lihue, Kauai – NE
30  Waianae Valley, Oahu – NE
24  Makapulapai, Molokai – NE
27  Lanai 1, Lanai – NE
38  Kealaloloa Rg, Maui – NE
35  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. 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

 Post–Tropical Cyclone 04E (Douglas) far east 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261850550-20261851340-GOES18-ABI-HI-14-600x600.gif

Variable low clouds…higher clouds arriving over the islands from the west…with an area of clouds approaching the Big Island from the east

 

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

505am, it’s partly cloudy here in upper Kula with calm winds, and a low temperature at my place of 53 degrees…with the relative humidity 80%

 

>>> Highest Temperature Friday, July 3, 2026 – 110 near Tecopa, CA
>>> Lowest Temperature Saturday, July 4, 2026 – 23 degrees at Angel Fire, NM

 

Interesting web blog: Mauka Showers…Hawaii’s Dry Season – Overall Trends

 

Hawaii’s Weather Highlights…as of Saturday morning: High pressure north of the islands will help maintain moderate to breezy trades through the week. Stable conditions will focus limited showers over windward and mountain areas through at least the middle of next week.

Weather Commentary…as of Saturday morning: High pressure just north of the Hawaiian Islands will remain the dominant feature, maintaining stable moderate to breezy trades over the next several days. Bands of moisture will continue to ride in on these trades, bringing increased shower activity to windward and mountain areas, namely across Kauai and the Big Island through the early portions of this weekend. The remainder of the islands will see little rainfall, as a brief period of drier conditions can be expected through much of today.

Trades gradually strengthen by the beginning of the new week, as the aforementioned high just to the north of the islands builds, and meanders a bit to the southeast. Conditions are expected to remain stable, focusing typical shower activity to windward and mountain areas through the early portion of the new week.

By the end of next week, residual moisture associated with Post-Tropical Cyclone Douglas may reach the island chain by way of breezy trade wind flow. This may bring increased shower activity over initially windward and mountain locations, and may spread further into leeward portions of the state.

Fire Weather…Moderate to locally near critical fire weather conditions are expected to develop this weekend, and will persist through early next week. High pressure north of the state will produce locally breezy trade winds, with the strongest winds expected to develop Sunday or Monday. A slightly drier air mass will move in today, causing relative humidity to fall to around 45 percent each afternoon. Fuel conditions will remain below the critical threshold.

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 north of the Hawaiian Islands will keep trade winds blowing across the region through the week. A Small Craft Advisory (SCA) for the typical windy waters and channels around Maui and the Big Island continues through Monday. Minor fluctuations in wind speeds may allow for brief periods of additional zones to fall into the SCA coverage area over the next several days.

As the current small long period south swell fades, yet another overlapping moderate long period south-southwest swell will fill in today, boosting south shore surf heights to near High Surf Advisory levels Sunday and Monday. This swell will slowly fade from Tuesday through the middle of next week.

Surf along east facing shores will remain rough and choppy through the forecast period as moderate to locally strong trades hold. Surf along north facing shores will remain tiny into next week.

 

Sean MacDonald A landscape of green showing large pink multi-branched plants in the foreground, a spiky small hill covered in trees in the mid-ground and a mountainous ridge in the background (Credit: Sean MacDonald)


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: 

Western East Pacific:

>>> A tropical wave located several hundred miles to the southwest of the coast of southwestern Mexico is producing disorganized shower activity. Development of this system appears unlikely as it moves westward across the central and western portions of the East Pacific basin during the next several days.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…10 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 09W (Bavi)…is located approximately 315 NM east of Andersen AFB

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

 

Tropical Cyclone 10W (Maysak)…is located approximately 108 NM east of Hanoi, Vietnam

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

 

>>> 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 Miracle Microbes That Could Save Crops From Impact of Rising Sea Levels

Researchers at the University of East Anglia have helped uncover a hidden ally in the fight against one of agriculture’s greatest threats – salty soil.

Led by Chinese collaborator Dr Yanfen Zheng, a new study shows how naturally occurring soil bacteria can dramatically boost plants’ ability to survive in salty conditions.

The findings reveal a previously unknown mechanism by which microbes help plants – including maize, tomato and rapeseed – survive in harsh environments.

It is hoped that the breakthrough could have major implications for agriculture worldwide by helping crops survive in soil that would otherwise be unusable.

Read More: University of East Anglia