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

 

The latest update to this website was at 910am Wednesday morning HST


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

4.45  Mount Waialeale, Kauai
0.25  Moanalua RG, Oahu
0.00  Molokai
0.03  Lanai City, Lanai
0.24  West Wailuaiki, Maui
0.42  Piihonua, Big Island


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

17  Port Allen, Kauai – ENE 
27  Oahu Forest NWR, Oahu – E 
22  Makapulapai, Molokai – ENE
m  Lanai 1, Lanai – m
25  Kealaloloa Rg, Maui – NNE
27  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 (out of operation). 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 far south…large area of high and middle level clouds arriving from the west

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20262170630-20262171420-GOES18-ABI-HI-14-600x600.gif

Low clouds arriving from the east on the trade winds

 

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…some are heavy 

 

https://www.weather.gov/wwamap/png/hfo.png

 

Please open this link to see details on any current Watches, Warnings and Advisories noted above




~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Wednesday comments:  I’m at home here in upper Kula, Maui, Hawaii

505am, it’s partly cloudy with some high clouds here in upper Kula with calm winds, and a low temperature at my place of 56 degrees…with the relative humidity 75%

 

>>> Highest Temperature Tuesday, August 4, 2026 – 121 degrees near Tecopa, CA

>>> Lowest Temperature Tuesday, August 4, 2026 – 22 degrees at Peter Sinks, UT

 

Hawaii’s Weather Highlights…as of Wednesday morning: Light to moderate trade winds will prevail for the next few days, followed by increasing trade wind speeds this weekend. Meanwhile, an upper disturbance just to the northwest will enhance showers over the western end of the state for the next few days, and could produce a few thunderstorms in the northwest coastal waters as well. The focus for increased showers will then shift to the eastern end of the state this weekend, as an area of tropical moisture passes by.

Weather Narrative..as of Wednesday morning: Scattered thunderstorms are occurring just outside of the coastal waters within about 60 miles northwest of Kauai. These thunderstorms are being supported by an upper low and its associated mid-level trough northwest of the Hawaiian Islands. The upper air atmospheric sounding at Lihue is similar to the previous one from yesterday afternoon, depicting an unstable environment over the western end of the state.

Although the thunderstorm activity has remained to the west thus far in closer proximity to the upper disturbance, thunderstorms could creep into the coastal waters near Niihau and waters north and west of Kauai later this morning as the cooler upper air temperatures edge closer to the islands. Therefore, isolated thunder chances have been introduced for these areas with the latest forecast.

The upper low and mid-level trough will linger for the next couple of days, enhancing incoming trade wind showers across the western half of the state. The upper low is forecast to lift away to the north on Friday, returning more stable conditions to our area.

Meanwhile, trade winds will remain at only light to moderate speeds for the next couple of days, as the remnants of former Tropical Cyclone Genevieve cut off the high pressure to our north, interrupting the trade wind flow. The weaker trades will likely result in localized sea breezes each day, bringing increased cloud buildups and a few showers each afternoon. Showers will be more prominent across Kauai and Oahu, due to more available moisture and instability. By the weekend, trade winds will increase back to locally breezy levels.

The forecast becomes more interesting again this weekend, as model guidance continues to suggest that a plume of moisture will either move over or very near the eastern end of the state late Saturday into Sunday. Despite most guidance keeping the bulk of the moisture just south of the islands, it is likely that at least some of the enhanced tropical moisture will become embedded within the trade wind flow, increasing showers for Maui and the Big Island. Thus, forecast rain chances have been adjusted upward, to better highlight the increasing potential for showers this weekend over Maui and the Big Island. The finer details should become more clear over the next few days.

 

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 Conditions…as of Wednesday morning: A west to east oriented stationary front remains anchored well north of the state. This, along with a surface low far northeast of the state will help to limit trade wind speeds across the islands today. As both features dissipate by late this week, building high pressure north of the islands will help strengthen trade winds back to fresh to locally breezy. Small Craft Advisories will be needed for at least the typical windier waters Friday through the weekend.

Isolated thunderstorms will be possible today over the waters west of Kauai, as an upper level disturbance lingers west of the state.

Surf along south-facing shores will remain below seasonal averages through late this week. By this weekend, a small, long period south swell is expected to arrive, followed by a series of reinforcing south swells that will boost surf heights to near or above seasonal averages into next week.

Small, medium period easterly swell generated from former Tropical Cyclone Genevieve continues to linger, but will gradually ease today. Choppy conditions will remain, generated by the moderate trade winds.

Surf along north facing and west shores will remain flat to tiny through the forecast period, except for areas exposed to the easterly trade wind wrap.

 

Hawaii Landscape Photography: Fine Art Collection | Aaron Reed Photography


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.

 

Northeast Pacific: There are no active tropical cyclones

>>> Western East Pacific:

A tropical wave located over the central portion of the east Pacific is producing limited shower and thunderstorm activity. Environmental conditions could become more conducive for slow development of this system over the weekend into early next week as it moves generally westward at 10 to 15 mph.

*Formation chance through 48 hours…low…near 0 percent
*Formation chance through 7 days…low…20 percent

 

Central North Pacific: There are no active tropical cyclones

>>> Central Pacific:

A tropical wave located over the western portion of the east Pacific is producing disorganized showers and thunderstorms. Environmental conditions appear marginally conducive for slow development over the next several days while it moves westward at 10 to 15 mph.

*Formation chance through 48 hours…low…near 0 percent
*Formation chance through 7 days…low…20 percent

 

>>> Northwest Pacific Ocean:  

Tropical cyclone 12W (Dolphin)…is located approximately 454 NM east of Kadena AB

https://www.metoc.navy.mil/jtwc/products/wp1226.gif

https://www.metoc.navy.mil/jtwc/products/12W_050000sair.jpg

 

Tropical cyclone 13W (Kujira)…is located approximately 204 NM north-northwest of Manila, Philippines

https://www.metoc.navy.mil/jtwc/products/wp1326.gif

https://www.metoc.navy.mil/jtwc/products/13W_051200sair.jpg

 

>>> 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:  6.5 Million Americans Face Landslide Risks — A New Database Shows Where They Live

Landslides cause an estimated $3-6 billion in damage and multiple fatalities annually in the United States. Those numbers could easily increase as housing needs spur development in landslide-prone areas, and as climate change increases the severity and frequency of heavy rains, which are often a trigger. Despite the threat, there has never been a systematic, nationwide accounting of who is most at risk from landslides.

The new Landslide Exposure Database is the first resource to map building-level landslide risk for the entire U.S. The database, developed by University of Washington researchers, rates 128 million buildings by landslide susceptibility, and uses socioeconomic data to assess residents’ vulnerability to the dangers and disruptions caused by landslides.

According to the analysis, roughly 6.5 million people live in landslide-prone regions; most of those people are concentrated in Appalachia and along the West Coast. Urban residents of landslide-prone properties tended to be more affluent and resilient, whereas rural residents in at-risk areas tended to be less resourced and more vulnerable to the impacts of a landslide.

Read More at: University of Washington

Image: A landslide in 2007 damaged Washington’s State Route 6 and several structures near the town of Pe Ell. New research from the University of Washington maps the communities most at risk from landslides nationwide; the database counts roughly 6.5 million vulnerable residents across the country.