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

 

The latest update to this website was at 127pm Tuesday afternoon HST


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

0.49  Mount Waialeale, Kauai
0.85  Schofield East, Oahu
0.16  Puu Alii, Molokai
0.00  Lanai
0.54  Puu Kukui, Maui
1.11  Kawainui Stream Big Island


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

30  Lihue, Kauai – NE
35  Oahu Forest NWR, Oahu – SE
33  Makapulapai, Molokai – E 
30  Lanai 1, Lanai – NE
39  Kealaloloa Rg, Maui – NE
46  Kohala Ranch, 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.

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Big Blue…click twice for largest version

 

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Cold front far northwest…thunderstorms in the deeper tropics to our south 

 

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Clear to variably cloudy 

 

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Localized showers…mostly windward 

 

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

It’s mostly clear here in Maui County, along with the usual low clouds along the windward sides, with calm winds at my place, and with a cool low of 51.5 degrees and the relative humidity is 80%

124pm, it’s cloudy here in upper Kula, which is tempering the heat of the day so far. I drove down to Mana Foods in Paia this morning. It was 81 degrees down there, which cooled off to 77 degrees by the time I drove up through Makawao, and is 72.6 degrees here at my place at the moment.


>>> Highest Temperature Monday, May 25, 2026 – 106 degrees at Death Valley, CA
>>> Lowest Temperature Tuesday, May 26, 2026 – 24 degrees near Crescent, OR

 

Hawaii’s Broad Brush Weather Overview…as of Tuesday afternoon: A high pressure ridge north of the state will dominate our weather pattern through the week. A upper level low west of the islands will move towards the islands, and could enhance showers this weekend.

Short Term Update: Moderate to locally breezy trade winds will continue, with showers being carried in on the trades, mainly impacting windward slopes of the islands. The Big Island leeward slopes should see some showers developing during the afternoon and evening hours.

Weather Details for the Hawaiian Islands…as of Tuesday afternoon: Hawaiian Island weather will remain very summer-like the next several days, with certain days experiencing thicker cloud cover and slightly higher rainfall. Today`s weather will be very similar to recent days. There will be breezy trades and infrequent passing upslope windward showers that, if more organized, may pass over the ridge tops and reach leeward areas.

Look for partly to mostly overcast skies over most windward sites today, with mostly sunny or clear skies over leeward areas. Afternoon temperatures will top out near 80 degrees where the clouds are thickest, with middle 80’s over sunny interior leeward spots. Sea level areas will cool into the lower to mid 70’s where most live. The highest rainfall will be confined to east-facing terrain.

While there will be areas of higher moisture arriving on the breezy trades from the east, as clustered clouds line up east northeast of the island chain, most of the day will remain dry with little to no rain accumulation. The general moisture characteristics of air moving through will remain unchanged. While trade- facing slopes and upper terrain will pick up the highest daily accumulations, there will be random spots that may pick up a quick tenth or so, especially of those spots experiencing a mostly sunny, very warm start to their day. It will not feel as muggy as winds remain breezy through tomorrow…wind speeds gradually fall off later this week.

A weak upper low east of the state will move away today, as a new low to the west advances to just west of Kauai by Friday morning. This low will pass overhead Friday into Saturday, destabilizing the atmosphere just enough, in tandem with a band of slightly higher moisture passing by from the northeast, to support added showers from late Thursday through Saturday.

A transitory period early next week will leave the islands under a relatively stable, dry last couple days of May. June arrives with more sun, less clouds/rain under weaker trades, as a new surface high takes up residence northwest of the islands.


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 afternoon: Fresh to strong east-northeasterly trades will persist through mid-week, as a strong surface ridge remains north of the state. This will allow the Small Craft Advisory to continue across most Hawaiian coastal waters through mid-week. Expect a gradual downward trend through the second half of the week and especially by the weekend, as a weakness in the ridge develops due to a cold front passing by far to the north.

A fresh long-period south swell arrives today, which will slowly build surf to near the seasonal average through Wednesday before easing Thursday. A more significant long-period south-southwest swell is expected by the weekend, due to a storm-force low that passed southeast of New Zealand over the weekend. Satellite data showed a large fetch of 40 to 50 knot winds generating seas of 35 to just over 40 feet, focused toward, or just east of Hawaii . Expect surf to begin building locally Friday with 20+ second forerunners, then potentially peak around advisory level over the weekend.

Surf along exposed north- and west-facing shores will trend up once again today, peaking at small to moderate levels on Wednesday, before lowering Thursday and continuing to fade through the weekend. Surf along east facing shores will remain rough through mid-week, then gradually lower later in the week as the trades ease.

 

Demystifying Hula: The Evolution Of Hawai?ian Dance - Kailani Tours


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

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

>>> Caribbean Sea: There are no active tropical cyclones

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

>>> Gulf of America: There are no active tropical cyclones

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

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

 

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

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

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

 

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

Routine issuance of the Tropical Weather Outlook will begin on June 1, 2026.

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:  Vitamin C May Help Prevent Cancer

University of Waterloo modelling study explores how antioxidants influence digestion?related cancer risk.

A new study from the University of Waterloo uses mathematical modelling to examine how Vitamin C affects chemical reactions in the digestive system that are linked to cancer development.

Over the last several decades, North American diets have seen a steady increase in exposure to nitrates and nitrites: compounds found in cured meats as well as fruits and vegetables grown using polluted soil and water. While nitrates and nitrites play important roles in neurological and heart health, in the stomach, they can undergo a chemical reaction known as “nitrozation” and form chemicals that many scientists suspect increase cancer risk.

“Since at least the 90’s, researchers have been studying the link between cancer and these compounds, with conflicting results,” said Dr. Gordon McNicol, a post-doctoral researcher in applied mathematics and the first author of the study. “Our work suggests that the presence of dietary Vitamin C may help explain these inconsistencies.”

Read More: University of Waterloo