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


The latest update to this website was 924am Wednesday HST


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

0.97  Hanamaulu, Kauai
2.09  Luluku, Oahu
0.00  Molokai
0.00  Lanai
0.00  Maui
1.33  South Point, Big Island


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

09  Lawai, Kauai – NE
09  Oahu Forest NWR, Oahu – ESE
12  Makapulapai, Molokai – SSE
14  Lanai 1, Lanai – NE
12  Launiupoko 2, Maui – NE
14  South Point, 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

Cold front northwest…thunderstorms far south 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261121040-20261121830-GOES18-ABI-HI-GEOCOLOR-600x600.gif

 Mostly lower level clouds across 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

Showers locally…very few 

 

https://www.weather.gov/wwamap/png/hfo.png

Please open this link to see details on the current Watches, Warnings and Advisories noted above




~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Wednesday comments:  I’m here in a wonderful vacation rental at The Sea Ranch, Sonoma County, California with my friend Bob, continuing on in my working vacation.

 

>>> Highest Temperature Tuesday, April 21, 2026 – 96 degrees near Casa Grande, AZ
>>> Lowest Temperature Wednesday, April 22, 2026 –  14 degrees at Mount Washington, NH

 

Hawaii’s Broad Brush Weather Overview…as of Wednesday morning: A light land and sea breeze pattern will produce afternoon clouds and spotty showers over land and partial clearing at night. Trade winds will redevelop late today and strengthen Thursday and Friday, focusing rainfall over windward and mountain areas.

Weather Details for the Hawaiian Islands…as of Wednesday morning: A trough to the west of the islands is helping to keep light winds over the region. Light winds over night resulted in land breezes that have helped to clear most of the skies over the islands. This afternoon look for afternoon sea breezes, that will bring some clouds and showers to the interiors of the islands.

The trough is expected to dissipate over the next day, which will allow a surface ridge to set up north of the islands. This in turn will allow trade winds to build back in. A mid to upper ridge will limit shower activity for Thursday and Friday.

Over the weekend, moisture currently upstream the islands will be carried in on the trade wind flow. This will bring a return to more typical trade wind shower activity.


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 Environmental Conditions…as of Wednesday: Light coastal land and sea breezes will prevail into early Thursday. Strengthening surface high pressure moving into far northwest offshore waters will bring a return to trade winds. Moderate to locally fresh trades will be the dominant wind from Thursday through the weekend.

A small, medium-period, west-northwest (300-330) swell has leveled out and will gradually decline the next few days. A small northwest swell reinforcement will fill in through the day. A moderate, medium period, north-northeast swell is arriving this morning, and will peak east-facing shore surf to advisory levels today. This swell will produce above average surf for select north and east facing shores before slowly declining through the remainder of the week.

Strengthening trades later this week will support closer to seasonal average surf for east-facing shores this weekend. West energy from former Super Typhoon Sinlaku is expected to come through the next couple of days. This swell may lift surf along better western exposures from today through the end of the week.

 

Surfers on Waikiki Beach with view of Diamond Head


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 Mexico: There are no active tropical cyclones

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

 

>>> Eastern Pacific: There are no active tropical cyclones

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

>>> Central Pacific: There are no active tropical cyclones

Here’s the link to the Central Pacific Hurricane Center (CPHC)

 

>>> 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



Interesting:  Handle With Care: Soft Robot Gripper Picks Ripe Fruit Without Bruising

When assessing the ripeness of fruit, sight and smell can tell you a lot, but the best indicator is often how the fruit feels.

Cornell researchers used stretchable fiber-optic sensors to create a soft robot gripper that can predict the ripeness of strawberries by touch, then gently twist them off their branch or vine without causing any damage.

The technology, developed in the lab of Rob Shepherd, the John F. Carr Professor of Mechanical Engineering in the Cornell Duffield College of Engineering, could lead to more resilient and ecological food production and increase the availability of fruit species that are difficult to cultivate.

Read more at: Cornell University

Cornell researchers used stretchable fiber-optic sensors to create a soft robot gripper that can predict the ripeness of strawberries by touch.