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

 

The latest update to this website was at 1247pm Saturday afternoon HST


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

0.04  Mount Waialeale, Kauai
0.95  Poamoho RG 1, Oahu
0.07  Puu Alii, Molokai
0.04  Lanai City, Lanai
1.24  Kamehamenui 1, Maui
1.53  Mamalahoa, Big Island


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

14  Puu Lua, Kauai – NE
25  Oahu Forest NWR, Oahu – ENE
27  Makapulapai, Molokai – E
24  Kahului AP, Maui – SE
30  Lalamilo, 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 (currently out of service). 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

A low pressure system to the northwest…thunderstorms far south


https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20262831400-20262832150-GOES18-ABI-HI-GEOCOLOR-600x600.gif

Variable clouds over the island chain 

 

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

436am, it’s partly cloudy here at my place, the low temperature 60.5 degrees, relative humidity is 85%…with calm winds

915am, it’s cloudy in many areas here on Maui, although from here in upper Kula I can see lots of sunshine down in the Kihei area

 

Interesting Weather Blog: Mauka Showers…Beware of Tropical Cyclone Tails!

 

Hawaii’s Weather Highlights…as of Saturday afternoon:  Moisture will decrease this weekend with light to moderate trades returning. Showers will impact windward and mauka locations locally at times. A brief increase in showers expected Monday night on the Big Island, before a return to relatively dry trades through the end of next week.

Short Term Update:  Latest satellite and radar imagery shows that clouds and showers have persisted across the Kona side of the Big Island (along the coast of the North Kona, South Kona, and Kau Districts) in what has turned into an unusually cloudy and showery morning there. Essentially all short term guidance suggests that these clouds and showers will stick around throughout the day today. Not anticipating anything particularly heavy or concerning. Kauai is also likely to see some continued passing showers today.

Weather Narrative…as of Saturday afternoon:  Satellite and radar imagery showed scattered clouds and showers moving along mostly windward and mauka locations across the state. The upper level low that brought rain to the area this week will weaken and move away to the northeast over the next few days.

A surface high pressure system to our northeast will strengthen and bring easterly trades back to the area. Apart from a brief increase in moisture mainly for the Big Island Monday, the next several days will be dominated by relatively dry trades. Isolated to scattered showers windward and mauka will be most frequent at night. Otherwise, expect light to moderate winds and rather typical October weather conditions.

Fire Weather:  Light to moderate trades are expected. Moisture will decrease Saturday night into Sunday, bringing RH values down to near dangerous fire conditions Monday on part of the Big Island, including near Kona. Inversion heights are around 5,500-6,500 feet.

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 afternoon: Moderate to fresh trade winds will build back over the majority of the coastal waters this weekend, though weaker winds will remain in place over the western waters, as a trough continues to linger west of the area. Although there will be slight day to day fluctuations, gentle to fresh trades will prevail throughout much of next week.

The current moderate, long period south swell will fade gradually through the weekend, but a long-period reinforcement is set to arrive today, then peak Sunday into Monday. This will maintain elevated surf along south and west- facing shores, but it will remain below advisory levels. South shore surf will decline slightly by the middle of next week, but will be followed by a new long period swell Wednesday night or Thursday.

A medium-period northwest swell declines through the weekend, as the source low pressure northwest of the Hawaiian Islands continues to weaken through Monday. This will cause small surf along north-facing shores to begin to fade today. A smaller long period northwest swell is also forecast to move through the islands this weekend, which could prolong small surf through Sunday, but will fade by the beginning of next week. A small, long period northwest swell is forecast to arrive on Monday and peak Tuesday, boosting north shore surf back to moderate levels.

Surf along east-facing shores will remain small as local winds remain fairly weak, with only slight variations each day. Small, moderate-period west and east swells generated by multiple Pacific tropical cyclones, are also moving through the islands this weekend.

 

>>> Highest Temperature Friday, October 9, 2026 – 110 degrees near Tecopa, CA


>>> Lowest Temperature Friday, October 9, 2026 – 21 degrees at Peter Sinks, UT

 

Beach Landscapes. ocean meets the forest Hawaiian inspired. free to use


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


Caribbean Sea: There are no active tropical cyclones


Gulf of America:

Post-Tropical Cyclone 09L (Isaias)…is located about 5 miles west of Birmingham, Alabama

FLASH FLOODING RISK CONTINUES WITH ISAIAS AS IT MOVES THROUGH THE SOUTHEAST UNITED STATES

According to the NHC advisory number 17 

The post-tropical cyclone is moving toward the north-northeast near 15 mph and this motion is expected to become more northeasterly and accelerate by Sunday. Maximum sustained winds are near 30 mph with higher gusts. Little change in strength is forecast during the next 48 hours. The estimated minimum central pressure is 1007 mb (29.74 inches).

cone graphic

 

Northeast Pacific

Tropical cyclone 18E (Rachel) is located about 400 miles south of San Diego, CA

RACHEL STRENGTHENS SLIGHTLY WHILE QUICKLY MOVING NORTHEASTWARD …TROPICAL STORM CONDITIONS EXPECTED IN PORTIONS OF THE BAJA CALIFORNIA PENINSULA THIS EVENING

According to the NHC advisory number 55 

Rachel is moving toward the north-northeast near 30 mph. A northeastward to north-northeastward motion with a further increase in forward speed is expected through Sunday. On the forecast track, the center of Rachel is expected to approach northern Baja California today and move onshore tonight. Rachel’s post-tropical remnants will then move across the southwestern United States on Sunday. Maximum sustained winds are near 65 mph with higher gusts. Some weakening is forecast during the next 48 hours, especially after Rachel moves inland over Baja California. Rachel is likely to become post-tropical by Sunday morning. Tropical-storm-force winds extend outward up to 140 miles from the center. The estimated minimum central pressure is 989 mb (29.21 inches).

cone graphic

 

Tropical cyclone (Simon) is located about 100 miles south-southwest of Manzanillo, Mexico

SIMON A DANGEROUS CATEGORY 4 HURRICANE WITH 100 MPH WINDS…PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE RUSHED TO COMPLETION SHORTLY IN THE HURRICANE WARNING AREA

According to the NHC advisory number 14 

Simon is moving toward the north near 5 mph, and this general motion is forecast to continue through the weekend. On the forecast track, Simon is expected to be near or just inland of the west-central coast of Mexico on Sunday. Maximum sustained winds are near 150 mph with higher gusts. Simon is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some additional strengthening remains possible today, and Simon is forecast to approach the coast of west-central Mexico as a major hurricane tonight or early Sunday. An Air Force Reconnaissance aircraft is scheduled to investigate the hurricane later today. Hurricane-force winds extend outward up to 15 miles from the center and tropical-storm-force winds extend outward up to 125 miles. The estimated minimum central pressure is 938 mb (27.70 inches).

 

>>> South of southwestern Mexico:

An area of low pressure is forecast to develop south or southwest of the coast of Mexico by early next week. Environmental conditions are expected to be conducive for gradual development thereafter, and a tropical depression is likely to form by the middle or latter half of next week as the system moves generally west-northwestward at around 10 mph.

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

 

Central North Pacific: There are no active tropical cyclones

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

 

Northwest Pacific Ocean:

Tropical Cyclone 15E (Nolo) is located about 393 NM southeast of Yokosuka, Japan – Final Warning

https://www.metoc.navy.mil/jtwc/products/ep1526.gif

 

Tropical Cyclone 27W (Koguma)…is located approximately 281 NM west of Minami Tori Shima

https://www.metoc.navy.mil/jtwc/products/wp2726.gif

 

Southwest Pacific Ocean: There are no active tropical cyclones

North and South Indian Oceans / Arabian Sea: There are no active tropical cyclones

 

https://www.metoc.navy.mil/jtwc/products/abpwsair.jpg

Here’s the link to the Joint Typhoon Warning Center (JTWC)



Interesting:  Where Fires Used to be Frequent, Old Forests Now Face High Risk of Devastating Blazes

A new analysis shows that the Pacific Northwest’s mature and old-growth forests are most at risk of severe wildfire in areas that historically burned frequently at lower severity.

The study by scientists at Oregon State University and USDA Forest Service Research & Development is important because those forests are culturally, economically and ecologically significant, supporting biodiversity while storing vast amounts of carbon, and they are under increasing threat of stand-replacing wildfire.

Researchers used state-of-the-art modeling techniques to gain knowledge that can help guide risk mitigation efforts and return forests to healthier fire regimes.

Read more at: Oregon State University