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

 

The latest update to this website was at 505am Wednesday morning HST


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

3.04  Mount Waialeale, Kauai
1.39  Poamoho RG 1, Oahu
0.33  Keopukaloa, Molokai
0.34  Lanai AP, Lanai
0.89  Waikamoi Treeline, Maui
2.00  Piihonua, Big Island


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

16  Lawai, Kauai – ENE
22  Kiia, Oahu – E
30  Makapulapai, Molokai – E 
17  Lanai 1, Lanai – ENE
32  Kealaloloa Rg, Maui – NNE 
29  Puuloa, Big Island – NNE


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

  Hurricane 06E (Fausto) far east-southeast 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20262030620-20262031420-GOES18-ABI-HI-14-600x600.gif

Variable low clouds…higher level 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…some are heavy 

 

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 Wednesday comments:  I’m at home here in upper Kula, Maui, Hawaii

441am, it’s cloudy here in upper Kula with calm winds, and a low temperature at my place of 62.5 degrees…with the relative humidity 87%

 

We have Hurricane Fausto churning the waters of the east Pacific, far to the east-southeast of the Hawaiian Islands. It will continue more or less west-northwesterly over the next several days. It will cross over into our central Pacific around Saturday. From there it may eventually get rather close to Hawaii, or move by not too far to the north. If this were to occur, we could see the associated cloud field bring showers our way towards the end of the month. Additionally, we should see rising surf this weekend along the east facing shores…generated by Fausto. As we know, things may change going forward, so that I’ll keep abreast of these changes and make updates here as warranted.

cone graphic

time of arrival graphic

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

 

>>> Highest Temperature Tuesday, July 21, 2026 – 119 near Stovepipe Wells, CA

>>> Lowest Temperature Wednesday, July 22, 2026 – 40 degrees at Leadville, CO

 

Hawaii’s Weather Highlights…as of Wednesday morning: Expect moderate to breezy trade winds to increase in strength through the week, and carry passing showers to windward and mountain areas.

Weather Commentary…as of Wednesday morning: Current radar and satellite imagery show scattered showers passing through windward and mountain areas of all islands. This summer time trade wind shower pattern should continue through at least the weekend, with minor fluctuations in rainfall as pockets of slightly drier and wetter air move through with the trade winds. A stable ridge overhead will keep most of these showers on the lighter side.

The trade winds will be supported by building high pressure to the north, becoming breezy to locally strong today through the remainder of the week. A weakening TC Fausto then approaches the area early next week, with guidance generally tracking the system near or just north of the islands during the mid-week period. So far it is too early to know exact details on how this storm will effect our weather, as it will be heavily dependent on the eventual track and intensity.

 

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 Wednesday morning:  High pressure far northeast of the state will maintain fresh to locally strong trades. A Small Craft Advisory (SCA) remains in effect for the typical windier channels and waters around Maui and the Big Island. Trades are expected to strengthen another notch Thursday into Friday, as a 1036 millibar high develops far north of the state. Widespread fresh to strong winds are expected during this time with near gales possible for the windier waters around Maui County and the Big Island. The SCA will be expanded to other area waters as the trades pick up later this week. The strong high to the north is expected to eventually shift westward and weaken some, which should allow the trade winds to weaken a notch around Sunday.

The current medium period south-southeast swell is producing above average surf along south-facing shores, which will continue to gradually fade over the next few days. Forerunners from the next notable incoming south swell will slowly fill in throughout the day today into Thursday, and peak late Thursday into Friday with surf heights above advisory thresholds. Offshore buoys are showing an increase in 23 second energy this morning, so we should see some very long-period energy slowly fill in today. Surf should reach High Surf Advisory (HSA) thresholds by Thursday with surf heights approaching warning levels during its peak. Over the weekend, reinforcing long-period swell energy may allow HSA conditions to persist through the weekend.

Surf along east-facing shores will gradually increase over the next several days as the trades strengthen. The Hilo buoy continues to show a small, medium period east swell, which was likely generated by former TC Elida. This swell should peak into tonight with near seasonal level surf. This weekend, larger surf generated by Hurricane Fausto is possible, and could bring advisory level surf along east facing shores.

Surf along north facing shores will remain at flat to tiny levels through the weekend.

 

Learn To Unlock the Awesome Power of Hawaiian Photographs – Latitudes Gallery


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: 

Tropical Cyclone 02A (Bertha)…is located 40 miles south of Pascagoula, Mississippi

CENTER OF BERTHA WOBBLING SOUTH OF THE MISSISSIPPI COAST …TROPICAL STORM CONDITIONS EXPECTED WITHIN THE WARNING AREA THROUGH TONIGHT

According to the NHC Advisory number 13

Bertha is moving toward the west-northwest near 6 mph. A westward motion with an increase in forward speed is expected to resume later today and continue through Friday. On the forecast track, the center of Bertha will move near or along the Louisiana and upper Texas coasts through Thursday, and then move farther inland into Texas on Friday. Maximum sustained winds are near 50 mph with higher gusts. Weakening is forecast during the next couple of days, but Bertha could maintain tropical storm intensity through late Thursday. Tropical-storm-force winds extend outward up to 105 miles from the center. The estimated minimum central pressure is 998 mb (29.47 inches).

cone graphic

https://cdn.star.nesdis.noaa.gov/GOES19/ABI/SECTOR/ga/13/GOES19-GA-13-1000x1000.gif

 

Northeast Pacific:

Tropical cyclone 06E (Fausto)…is located about 855 miles west-southwest of the southern tip of Baja California

FAUSTO CONTINUES WEST-NORTHWESTWARD OVER OPEN WATERS

According to the NHC Advisory number 15 

Fausto is moving toward the west-northwest near 7 mph. A continued west-northwestward to westward motion, along with an increase in forward speed, is expected over the next several days. Maximum sustained winds are near 80 mph with higher gusts. Some gradual strengthening is forecast during the next day or so, followed by slow weakening on Friday and into the weekend. Hurricane-force winds extend outward up to 30 miles from the center and tropical-storm-force winds extend outward up to 150 miles. The estimated minimum central pressure is 983 mb (29.03 inches).

cone graphic

 

>>> Eastern and Central east Pacific:

A tropical wave located a few hundred miles off the coast of Central America is producing a large area of disorganized showers and thunderstorms. Gradual development of this system is expected, and a tropical depression is likely to form over the weekend while it moves generally west-northwestward at 10 to 15 mph, remaining well offshore of Mexico.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…high…90 percent

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

 

Central Pacific: There are no active tropical cyclone

>>> Southwest of Hawaii:

A trough of low pressure located well southwest of the Hawaiian Islands is producing disorganized showers and thunderstorms. Environmental conditions appear conducive for some gradual development of this system, and a tropical depression could form over the weekend or early next week while the system moves slowly westward to west-northwestward. The system is forecast to move into the western Pacific basin on Sunday.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…medium…60 percent

 

>>> 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:  URI Researchers Discover Rare Freshwater Mussels in Moosup River

When University of Rhode Island researchers slipped beneath the surface of the Moosup River recently, they did not expect to find a living freshwater mussel community. The discovery marked the first documented record of freshwater mussels in the river in more than three decades and included rare native species considered sensitive indicators of river health.

Graduate students Jamie Bucholz and Mallory Malz in URI’s Department of Natural Resources Science identified the mussel community during a survey of the river, which flows through northeastern Connecticut and western Rhode Island.

It’s a major milestone and a rare piece of good news for one of the world’s most overlooked endangered animal groups.

Read More at: University of Rhode Island

The discovery of freshwater mussels includes rare native species considered sensitive indicators of river health; shown, Margaritifera, Wood River.