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

 

The latest update to this website was at 6pm Wednesday evening HST


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

7.15  Mount Waialeale, Kauai
1.98  Manoa Lyon Arboretum, Oahu
0.04  Puu Alii, Molokai
0.01  Lanai City, Lanai
0.60  Puu Kukui, Maui
2.12  Saddle Quarry, Big Island


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

22  Lawai, Kauai – ENE
32  Kuaokala, Oahu – ESE
29  Makapulapai, Molokai – E 
29  Lanai 1, Lanai – NE
37  Kahului AP, Maui – NNE
36  Kawaihae Rd, 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

 

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Thunderstorms in the deeper tropics south…Tropical Cyclone 01E (Amanda) in the eastern Pacific

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/13/20261540330-20261541120-GOES18-ABI-HI-13-600x600.gif

Mostly clear and dry

 

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

Localized showers…very few

 

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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

Partly to mostly cloudy here in Maui County, with calm winds at my place, and with a low of 58.5 degrees and the relative humidity is 85%

422pm, it’s mostly sunny, with very few clouds around most of the state.


>>> Highest Temperature Wednesday, June 3, 2026 – 114 degrees near Tecopa, CA
>>> Lowest Temperature Wednesday, June 3, 2026 – 22 degrees near Mackay, ID

 

Hawaii’s Broad Brush Weather Overview…as of Wednesday evening: Trade winds will dominate our weather for the next week. We`ll have typical moisture levels, so windward and mountain areas will see the majority of showers. Wind speeds will be moderate to breezy. No significant impactful weather is expected.

Weather Details for the Hawaiian Islands…as of Wednesday evening: Radar and satellite indicate isolated showers mainly windward and mountains, and mostly on Kauai. Skies were partly to mostly sunny, with winds averaging 10 to 15 mph sustained, and gusts to near 30 mph in favored locations. With an area of enhanced moisture moving off to the west, look for a return to a typical June trade wind pattern from tonight onward through the next week.

Aloft, a broad, and at times strong upper level high will remain to our north. It will form part of a “high over low” pattern. The “low” part of this pattern will remain near the state, but guidance currently indicates the low will be too weak to have a noticeable impact on our weather. Rather, the “high” part to our north will help keep a strong surface high in place (also centered to our north) and this will keep the trade winds going.

With climatologically normal precipitable water values (1.2 to 1.4 inches), expect a normal amount of trade wind showers, mainly windward and mountains. With that said, it is likely that small-scale increases in moisture will develop and move over the islands from time to time during the coming week. Each time this happens, we`ll see a small increase in showers. These are not forecast well by the models until 2 to 3 days out generally, and none are showing up in that time frame in the latest guidance. Finally, tropical storm Amanda remains far to our ESE, and is not expected to become a factor in Hawaii`s weather.


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 evening: Fresh to strong easterly trades will prevail through at least the weekend, as high pressure remains anchored far northeast of the islands. A Small Craft Advisory (SCA) for the typically windier channels and waters around Maui County and Big Island has been extended through Saturday, and will likely be needed through at least Monday. Trades may ease slightly Tuesday.

A large south-southwest swell will begin to gradually decline while maintaining south shore surf above the High Surf Advisory threshold into the day on Thursday. Offshore NOAA buoy 51002 has been showing a shift toward lower periods since the early morning hours, and nearshore buoys have recently been showing a slight decline in swell at 5 to 6 feet. After remaining elevated near the High Surf Warning threshold through the afternoon, south shore surf will begin a slow decline, and is expected to drop below the High Surf Advisory threshold by Thursday afternoon. Surf will fall to moderate levels Friday and will fade Sunday, another long-period pulse of south-southwest swell early next week.

Along north-facing shores, a small medium-period north swell will arrive Thursday, peak Friday, then ease over the weekend. A small west-northwest swell is possible early next week. Surf along east- facing shores will gradually build to around seasonal average by Friday, though some areas exposed to wrapping north swell could be slightly larger Thursday night and Friday. Near average east shore surf will prevail this weekend and early next week.

 


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: 

Tropical Cyclone 01E (Amanda)

AMANDA SHOWING LITTLE CHANGE IN STRENGTH

According to the NHC advisory number 6

Amanda is moving toward the west-northwest near 9 mph and this general motion is expected to continue for the next couple of days. A turn toward the west and southwest at a slower forward speed is forecast this weekend. Maximum sustained winds are near 40 mph with higher gusts. Some strengthening is forecast during the next day or two. A weakening trend is forecast to begin this weekend. Tropical-storm-force winds extend outward up to 70 miles from the center.

 

>>> Eastern East Pacific:

An area of low pressure is forecast to form offshore of Central America and southern Mexico late this week. Environmental conditions appear conducive for development of this system thereafter, and a tropical depression could form late this weekend or early next week while it moves slowly northwestward or northward.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…medium…50 percent

>>> Offshore Southern and Southwestern Mexico:

Another area of low pressure is forecast to form offshore of southern and southwestern Mexico by this weekend. Environmental conditions also appear conducive for gradual development of this system into early next week, and a tropical depression could form during this time as it moves slowly northward or northwestward, near the coast of southern Mexico.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…medium…50 percent

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

 

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

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

 

>>> Northwest Pacific Ocean: 

Tropical Cyclone 06W (Jangmi)…is located approximately 69 NM southeast of Narita AP, Japan – Final Warning

 

>>> 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:  Dishwashing With Side Effects: Kitchen Sponges Release Microplastics

Kitchen sponges are among the most frequently used household items – and may also represent a previously underestimated source of microplastics. Researchers led by the University of Bonn investigated how many plastic particles are released from sponges during dishwashing and their environmental impacts. The findings show that while measurable amounts of microplastics enter the environment each year, the largest share of environmental impact from manual dishwashing is caused by water consumption.

What is the Study About?

Kitchen sponges are considered a potential, yet largely understudied, source of microplastics in households. The study investigated how many microplastic particles are released from kitchen sponges during use and what environmental impacts result. The aim was to quantify the actual release under realistic usage conditions and to assess the environmental impacts using a life cycle assessment (LCA).

How Did You Conduct Your Study?

The study combined citizen science—where members of the public actively conduct experiments—with laboratory tests. Volunteer households in Germany and North America used one of three different sponge types in their daily routines and documented their usage. The sponges were weighed before and after use to determine material loss and microplastic release. In addition, laboratory experiments were carried out using an automated test device (“SpongeBot”) that simulates the mechanical stress applied to sponges during dishwashing.

Read More: University of Bonn