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

 

The last update to this website was Wednesday morning at 1230pm HST


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

0.77  Mount Waialeale, Kauai
0.18  Schofield East, Oahu
0.00  Molokai
0.00  Lanai City, Lanai
0.47  West Wailuaiki, Maui
1.05  Kawainui Stream, Big Island


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

23  Nawiliwili, Kauai – NE
32  Oahu Forest NWR, Oahu – E 
33  Molokai AP, Molokai – E 
33  Lanai 1, Lanai – NE
50  Na Kula, Maui – ESE 
38  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

Lots of thunderstorms in the deeper tropics…cold fronts far northwest 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261331310-20261332100-GOES18-ABI-HI-GEOCOLOR-600x600.gif

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 

 

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 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!

I played pickleball in Makawao, and fortunately it wasn’t as crowded as it sometimes can be.

1215pm, we have yet another sunny to partly sunny day here in Maui County, just like the last several days this week have been…the one difference is that the high clouds are now gone.


>>> 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 afternoon:  Breezy trade winds will persist through Thursday, ease slightly this weekend, then restrengthen by mid-week next week. Showers will favor windward and mountain areas, most frequently at night and during the early morning hours. Friday into the weekend, an upper-level disturbance and increasing moisture may bring muggier conditions and an increase in trade wind shower activity, with pockets of heavy rain possible.

Short Term Update…as of Wednesday afternoon: High pressure to the far north will help maintain breezy trade winds across the state into Thursday. In this pattern, clouds and showers will favor windward and mountain areas, as batches of moisture filter across the island chain on the trade wind flow.

Weather Details for the Hawaiian Islands…as of Wednesday afternoon:  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 afternoon:  High pressure established north of the islands maintains locally strong trades until an upper disturbance causes winds to weaken by this weekend. Small, short period NW swell fades and will be replaced by a small to moderate, long period NW swell that will peak,Thursday, bringing small to moderate surf to favored exposures.

Small, medium to long period south swell maintains small surf along south shores. Meanwhile, locally strong trades maintain choppy short period conditions along east shores.

Tides peak around 2.5 feet this weekend. Combined with ongoing trades and a modest boost in south swell, water levels will peak around 3.0 feet late this weekend into early next week. Minor overwash of low lying coastal areas will be possible at high tide during this time.

 

 

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