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

 

The latest update to this website was at 418pm Monday afternoon HST


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

0.40  Mount Waialeale, Kauai
0.32  Lyon, Oahu
0.32  Puu Alii, Molokai
0.00  Lanai
0.76  Puu Kukui, Maui
0.19  Saddle Quarry, Big Island


The following numbers represent the strongest wind gusts (mph) Monday afternoon: 

33  Port Allen, Kauai – ENE
28  Honolulu AP, Oahu – ENE
24  Anapuka, Molokai – NE
38  Lanai 1, Lanai – NE
43  Na Kula, Maui – SE 
31  Kealakomo, Big Island – E


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

  Post-Tropical Cyclone 05E (Elida) and Tropical Cyclone 06E (Fausto) far east-northeast and east-southeast…thunderstorms south of Hawaii

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20262011610-20262020000-GOES18-ABI-HI-GEOCOLOR-600x600.gif

Variable low clouds…a few high clouds in the vicinity

 

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

505am, it’s mostly clear here in upper Kula with calm winds, and a low temperature at my place of 54 degrees…with the relative humidity 78%

255pm, I played pickleball in Makawao this morning, and as is always the case, had lots of fun both in the social aspects, in addition of course to the vigorous playing itself. Skies have turned cloudy this afternoon, although as is often the case, the beaches down towards Kihei and Wailea have some sunshine beaming down.

 

We have Tropical Storm Fausto churning the waters of the east Pacific, far to the east-southeast of the Hawaiian Islands, which will become Hurricane Fausto Tuesday. It will continue more or less northwesterly over the next several days, and continue to strengthen. It will eventually cross over into our central Pacific (around Sunday), and likely have come back down into the Tropical Storm category by then. From there it appears to spin down further in strength, and eventually get into the area well to the northeast of our islands. If this were to occur it would cut off our trade winds, and we could see the southern part of the associated cloud field bring some showers our way…although it could just as easily do nothing more than bring some very warm and muggy weather our way by the 28-30th of this month. As we know, things will change going forward, so that I’ll keep abreast of these changes and make updates here as warranted.

 

>>> Highest Temperature Sunday, July 19, 2026 – 118 at Stovepipe Wells, CA

>>> Lowest Temperature Monday, July 20, 2026 – 28 degrees near Baker. NV

 

Interesting Weather Blog…Mauka Showers – The Most Common Wind Direction at Hilo is from the West-Southwest?!

 

Hawaii’s Weather Highlights…as of Monday afternoon:  Light to occasionally breezy trades, with a slight increase in windward and upslope mountain clouds and showers later today into the evening. Recent trade wind behavior will remain steady through mid-week, with a slight strengthening of the winds expected later this week.

Rain coverage may increase Tuesday into Wednesday with increased moisture moving in from the east. Tropical Cyclone Fausto will remain far east and away from our offshore waters by the weekend, but may still influence our trade flow pattern going into early next week.

Weather Commentary…as of Monday afternoon: Deeper moisture lurks immediately upstream and will be ushered through the forecast area tonight through Tuesday, by persistent moderate trades in the lowest levels. For the most part, a typical distribution of showers focused windward and mountains is expected. However, veering winds within the deepening boundary layer (up to approximately 10,000 feet yields potential for some leeward convergence downwind of Maui County, potentially bringing enhanced shower coverage to Leeward Oahu mainly after midnight tonight continuing into Tuesday morning. As this moisture advances west of the islands mid-week, trades rebound under a broad subtropical ridge of high pressure. Breezy trades, high stability, and limited showers focused windward and mountains then prevail through the weekend.

 

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 Monday afternoon: The trade winds will hold at mostly moderate speeds today through Tuesday, then restrengthen back to fresh and locally strong speeds Wednesday through Friday as high pressure strengthens north of the island chain.

The current long period south swell will continue to build today, then peak near the advisory level tonight into early Wednesday. A High Surf Advisory will likely be required as the swell peaks. This swell with then slowly fade during the middle of the week, but will be followed by a new long period south swell arriving on Thursday, which will keep surf elevated above the summertime average through the weekend.

Surf along east-facing shores will remain slightly below seasonal levels today through Wednesday as the trades ease upstream of the islands. East shore surf should then build back close to seasonal levels late this week and through the weekend as stronger trades return over and upstream on the islands. Additionally, swell generated by former Tropical Cyclone Elida may give a slight boost to east shore surf during the middle of the week.

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

 

Wailea vs. Hilo: A Hawaii Travel Guide


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 110 miles south of Panama City, Florida

NOAA HURRICANE HUNTERS FIND THAT THE DEPRESSION HAS STRENGTHENED INTO TROPICAL STORM BERTHA

According to the NHC Advisory number 6A

Bertha has been drifting erratically near 3 mph, but a northwestward motion is expected tonight and Tuesday morning, followed by a west-northwestward or westward motion. On the forecast track, Bertha will move near or along the northern Gulf coast during the next several days. Maximum sustained winds have increased to near 40 mph with higher gusts. Some additional strengthening is possible during the next day or so. Tropical-storm-force winds extend outward up to 70 miles from the center.

cone graphic

 

Northeast Pacific:

 

Tropical cyclone 06E (Fausto)…is located about 745 miles southwest of the southern tip of Baja California

FAUSTO EXPECTED TO BECOME A HURRICANE BY TUESDAY

According to the NHC Advisory number 8 

Fausto is moving toward the northwest near 10 mph. A decrease in forward speed and a motion toward the northwest is expected to continue for the next day or two. A turn back to the west-northwest is expected on Wednesday. Maximum sustained winds are near 70 mph with higher gusts. Steady to rapid strengthening is expected during the next couple of days, and Fausto is forecast to become a hurricane later today or tonight. Tropical-storm-force winds extend outward up to 140 miles from the center.

cone graphic

 

>>> Eastern and Central east Pacific:

A broad area of low pressure is forecast to develop well south of Mexico over the next couple of days. Environmental conditions appear conducive for development of the system thereafter, and a tropical depression is expected to form while it moves westward to west-northwestward across the eastern and central portions of the eastern Pacific.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…high…70 percent

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

 

Central Pacific: There are no active tropical cyclone

>>> Southwest of Hawaii:

Showers and thunderstorms associated with a trough of low pressure located well southwest of the Hawaiian Islands remain disorganized. Environmental conditions appear conducive for some gradual development of this system as it moves generally westward during the next several days.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 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:  New Study Pinpoints Europe’s Most Critical Wetlands for Climate Action

Wetlands have shaped human life in Europe since ancient times. These ecosystems provided essential resources and safe havens for plants and animals, and in many regions they also held spiritual and ritual significance. For millennia, wetlands covered vast parts of the European continent.

Today, the picture is very different. Half of Europe’s wetlands have disappeared due to drainage, cultivation, and resource extraction. Yet wetlands are not only part of our cultural and natural heritage — they are also among the most efficient carbon sinks in nature. But when disturbed, they may shift from storing carbon to emitting large quantities of greenhouse gases.

For this reason, the EU’s Nature Restoration Law requires all Member States to restore at least 30% of their wetlands not in “good condition” by 2030.

Read more at: University of Copenhagen