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

 

The last update to this website was Wednesday morning at 552am HST


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

0.89  Mount Waialeale, Kauai
0.38  Schofield East, Oahu
0.01  Kamalo, Molokai
0.00  Lanai City, Lanai
0.54  West Wailuaiki, Maui
1.16  Kawainui Stream, Big Island


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

18  Nawiliwili, Kauai – ENE
31  Palehua, Oahu – NE 
30  Makapulapai, Molokai – E 
28  Lanai 1, Lanai – NE
38  Kealaloloa Rg, Maui – ENE 
47  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 far northwest 

 

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Low clouds arriving on the trade winds…high clouds arriving from the west (which will be clearing the state soon)

 

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 

 

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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 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 chilly 47.5 degrees. There are some streaky high cirrus clouds too, which lit up a very pretty pink color at sunrise!


>>> Highest Temperature Tuesday, May 12, 2026 – 115 degrees at Stovepipe Wells, CA
>>> Lowest Temperature Wednesday, May 13, 2026 – 22 degrees at Mount Washington, NH

 

Hawaii’s Broad Brush Weather Overview…as of Wednesday morning:  Breezy east-northeasterly trade winds will prevail through the week, and could ease slightly by Friday and become more easterly. Showers will favor windward and mountain areas, as well as the night time and early morning hours. Early Friday into the weekend, an upper- level low could bring an increase in shower coverage and higher humidity, with heavy showers possible.

Weather Details for the Hawaiian Islands…as of Wednesday morning:  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 and into next week. 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 our area, bringing cooler temperatures aloft and increasing instability. Precipitable water values at that time are expected to climb to 1.5 to almost 2 inches over the eastern end of the state, as moisture is drawn up from the south.

The latest GFS model run and some recent high resolution model runs show an increased probability of pockets of heavy rain forming. Exactly where and when remains to be seen, 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 Wednesday morning:  Slow eastern-moving surface high pressure centered far northeast of the islands, will maintain generally moderate to locally strong Small Craft Advisory criteria trades through tomorrow (Thursday) afternoon. An upper level low dropping south in the wake of this east-exiting high will increase north and west local water shower chances from Friday into the weekend.

A small to medium size, long period northwest (330 degree) swell will arrive later today, fill in overnight and peak Thursday. This swell will lift north-facing surf to around or slightly over head high heights. Very small, medium period background south swell will occur through the remainder of week. A small, long period south southwest (200 degree) swell arrives this weekend. This bump will add another foot on to south-facing surf. Enhanced trades will maintain above seasonable eastern shore wind wave chop the next several days.

Monthly tidal heights reach their maximum this weekend. Several days of moderate trades, along with a slight boost in southern swell, will push overall water levels up by Saturday. This may bring some overwash into low lying coastal areas during times of high tide, from this weekend into early next week.

 

 

Water Temperature In Oahu Hawaii: A Snorkeler's Guide | Kona Snorkel Trips


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:  Exercise: a Very Little Goes a Long Way

Don’t have time to exercise because of a busy schedule? Or are you simply not very motivated? You’ll be pleased to learn that just 10 minutes of exercise every other day is all it takes. However, you really need to exert yourself during those 10 minutes.

The onset of spring can encourage people to get outside more and exercise. We know that exercise is good for our health, but it can still be difficult to get started and maintain good habits.

The Norwegian health authorities’ recommendation is to exercise for at least 2.5 hours, and preferably 5 hours, per week. For some people, this may feel just a bit too much to take on.

However, research results from the past 20 years have shown that just 30 minutes per week is enough to improve your health. That equates to 4.5 minutes per day or 10 minutes every other day – but the intensity must be high. This means that you need to really exert yourself so you get out of breath.

Read More: Norwegian University of Science and Technology