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

 

The last update to this website was Tuesday evening at 925pm HST


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

1.55  Kilohana, Kauai
0.46  Schofield East, Oahu
0.02  Kamalo, Molokai
0.00  Lanai City, Lanai
0.15  West Wailuaiki, Maui
0.59  Kawainui Stream, Big Island


The following numbers represent the strongest wind gusts (mph) Tuesday evening:

20  Lawai, Kauai – ENE
35  Oahu Forest NWR, Oahu – NE 
33  Makapulapai, Molokai – E 
27  Lanai 1, Lanai – NE
45  Na Kula, Maui – ENE 
42  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

Thunderstorms in the deeper tropics…cold front north 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261322200-20261330550-GOES18-ABI-HI-14-600x600.gif

Low clouds arriving on the trade winds…high clouds arriving from the west

 

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 

 

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

It was clear with a few clouds along the windward sides this morning here in Maui County, with a low temperature at my place a very chilly 45.5 degrees. This low temperature would be very chilly even during the winter season!

240pm, I drove down to Mana Fo0ds in Paia this morning, had to stock up on food after being away for 6-weeks. It’s very much like yesterday weather wise, a mix of sun and clouds, with light winds here in upper Kula, although windy in those areas exposed to the gusty trade winds.

847pm, the afternoon clouds are slowing clearing up, although not as quickly as last evening at this time. Thus, I doubt very seriously whether the low temperature Wednesday morning will drop as low as this morning, which again was a cold 45.5 degrees. At the time of this writing the temperature is 60 degrees, while last night about this time it was around 53 degrees as I recall.

909pm, the clouds are gone and the temperature has dropped further to 55.5 degrees. Thus, we may see our temperature drop into the upper 40’s here at my place by early Wednesday morning.


>>> Highest Temperature Tuesday, May 12, 2026 – 115 degrees at Stovepipe Wells, CA
>>> Lowest Temperature Tuesday, May 12, 2026 – 17 degrees at Mount Washington, NH

 

Hawaii’s Broad Brush Weather Overview…as of Tuesday evening:  Breezy east northeasterly trade winds will remain through the week, and could ease slightly this weekend and become more easterly. Showers will favor windward and mountain areas, as well as the night time and early morning hours. Late this week into the weekend, an upper-level low could bring an increase in trade wind shower coverage.

Weather Details for the Hawaiian Islands…as of Tuesday evening: At the surface, a dominate high pressure system resides far to the north of the Hawaiian islands, and will keep east to east-northeast trade winds blowing through the weekend into next week.

Most of the rain has fallen over Kauai, with some showers upstream approaching the other islands. Showers will be pushed over the typical windward and mountain areas, favoring the night time and early morning hours.

By Friday through the weekend, models continue to show a mid to upper- level cutoff low moving over the region, bringing cooler temperatures aloft and increasing instability. Precipitable water values at that time are expected to climb to 1.5-2.00 inches over the eastern end of the state, as moisture is drawn up from the south.

Its hard to know at this moment how much rain could fall, as some dry air and ridging could linger, inhibiting showers. But localized heavy showers especially over the mountain ranges look like a possibility at this time. This upper low is also expected to usher in muggier conditions, and the extra moisture could linger into early next week.


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 Environmental Conditions…as of Tuesday evening: A slow eastern-moving area of high pressure north of the islands, will maintain generally moderate to locally strong Small Craft Advisory level trade wind winds through Thursday. An upper level low dropping south, in the wake of the exiting high to the east will increase shower chances from Friday into the weekend.

A small short to medium period northwest (330 degree) swell will slowly decline through tonight. A larger long period northwest swell will arrive late Wednesday and will peak on Thursday. This will push north-facing surf to near or slight over head high levels.

Very small, medium period south swell will occur through the remainder of week. A long period south bump arrives Saturday and this will produce slightly elevated south-facing shore surf. Enhanced trades will maintain above seasonable east-facing shore wind wave chop the next several days.

 

 

Grand WaileaFour Seasons Maui resort swimming pool


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 cyclone

>>> 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:  AI Cuts Wildlife Tracking Time From Months to Days

Artificial intelligence can dramatically speed up the painstaking work of tracking wildlife with remote cameras, cutting analysis time from months or even a year to just days while producing nearly the same scientific conclusions as humans.

That’s according to a new study led by researchers at Washington State University and Google, published in the Journal of Applied Ecology. The team tested whether a fully automated AI system could replace humans in processing hundreds of thousands to millions of camera trap images collected in Washington, Montana’s Glacier National Park, and Guatemala’s Maya Biosphere Reserve.

They found that, for most species, models built from AI-identified images closely matched those produced by human experts. Across key measures such as where animals occur and what environmental factors influence them, the results aligned in roughly 85–90% of cases, with limited divergence for rare or difficult-to-identify species.

Read More: Washington State University

Image: SpeciesNet’s AI prediction can be seen on an image of a lynx.