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

 

The latest update to this website was at 1043am Sunday morning HST


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

2.52  Mount Waialeale, Kauai
0.72  Moanalua RG, Oahu
0.14  Puu Alii, Molokai
0.00  Lanai City, Lanai
0.34  Puu Kukui, Maui
1.18  Kawainui Stream, Big Island


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

27  Lihue, Kauai – NE
30  Oahu Forest NWR, Oahu – SE  
28  Makapulapai, Molokai – E
m  Lanai 1, Lanai – m
36  Kealaloloa Rg, Maui – NNE 
31  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

 Post-Tropical Cyclone Genevieve far east-northeast…no threat to Hawaii 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20262141150-20262141940-GOES18-ABI-HI-14-600x600.gif

  High and middle level clouds moving across the state from the west at times…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 

 

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

519am, it’s clear here in upper Kula with calm winds, and a low temperature at my place of 52 degrees…with the relative humidity 73%

 

>>> Highest Temperature Saturday, August 1, 2026 – 124 southwest of Tecopa, CA

>>> Lowest Temperature Saturday, August 1, 2026 – 34 degrees at Foxpark, WY

 

Interesting Web Blog: Mauka Showers…Tropical Cyclones that Threaten the Hawaiian Islands

 

Hawaii’s Weather Highlights…as of Sunday morning: Strong high pressure to the north will slowly weaken over the next several days. As a result, the windy trade winds will gradually decrease back down to normal levels. Showers will favor windward and mountain areas for the next few days, before potentially increasing slightly during the middle of the week.

Weather Narrative..as of Sunday morning: Satellite and radar imagery shows low clouds and scattered windward and mountain showers occurring across the state. Winds will gradually decrease over the next few days. By mid-week, trades will further ease as Tropical Storm Genevieve weakens to a post-tropical depression, and tracks far northeast of the state, disrupting trade wind flow.

Bands of moisture will move over the state, returning typical scattered showers to windward and mountain slopes. Model guidance continues to show a tropical upper level trough shifting just northwest of Kauai, by the middle of the week. In addition an area of enhanced moisture may move from east to west across the state. If this occurs, expect a steady increase in low to upper level moisture/clouds and increasing moderate to locally heavy windward and mountain showers, especially for the western half of the state.

Fire Weather…Trades will continue to decrease across the state over the next few days. Scattered windward and mountain showers can be expected in the overnight and early morning hours. A steady increase in low to upper level moisture could also fill in across the state, if an upper level low ends up moving close to the islands. This could also raise the inversion and lower fire weather risks. Inversion heights are between 7,000 and 8,000 feet.

 

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 Sunday morning: A high pressure system north of the Hawaiian Islands will weaken over the next few days, decreasing trade wind speeds from moderate to strong range today, into the gentle to fresh range from Monday through Thursday. The Small Craft Advisory (SCA) coverage was lowered to the typical windier waters and channels near Maui and the Big Island, this SCA will continue through tonight and then likely be cancelled by Monday morning.

Surf along south facing shores will stay below seasonal averages, as consecutive small south to southwest medium period swells impact the shorelines into Friday. The next small, long period south swell will arrive by next Saturday, with a slight rise in south shore surf heights through next weekend. Possibly a larger long period south swell arriving early the following week.

East facing shores will remain rough and choppy, due to a combination of strong trade wind waves and a small, medium period easterly swell generated from Tropical Storm Genevieve, that will linger for the next few days.

Surf along north facing and west shores will remain flat to tiny, except for areas exposed to the easterly trade wrap and the small south swell wrap around.

 

What is the name of this beautiful Hawaiian island?


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:

Post-Tropical Cyclone 07E (Genevieve)…is located about 1800 miles west of the southern tip of Baja California – Last Advisory

GENEVIEVE BECOMES A POST-TROPICAL CYCLONE

cone graphic

IR Satellite Image

According to the NHC Advisory number 39 

The post-tropical cyclone is moving toward the west-northwest near 13 mph. This general motion is expected to continue over the next day or so, followed by a decrease in forward speed and a turn toward the northwest by Tuesday. Maximum sustained winds are near 40 mph with higher gusts. Continued weakening is forecast over the next several days, and the post-tropical low is expected to dissipate by late this week. Tropical-storm-force winds extend outward up to 105 miles from the center. The estimated minimum central pressure is 1009 mb (29.80 inches).

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

 

Central North Pacific: There are no active tropical cyclones

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

 

>>> Northwest Pacific Ocean:  

Tropical cyclone 12W (Dolphin)…is located approximately 445 NM east of Iwo To

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

https://www.metoc.navy.mil/jtwc/products/12W_021200sair.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:  Pacific Ocean Pattern Helps Explain Diverging Wildfire Trends in U.S. and Australia

Two of the world’s most fire-prone regions have followed strikingly different wildfire trajectories despite both experiencing a warming climate. Burned forest area has surged across the U.S. Southwest, while eastern Australia has not seen the same increase.

A recent study published in Environmental Research Letters indicates that a decades-long shift in the tropical Pacific Ocean contributed to these contrasting trends.

“We found that what’s happening in the tropical Pacific over longer timescales, not just during El Niño and La Niña, is another significant piece of the puzzle,” said lead author Tess Wei-Ping Jacobson, a postdoctoral fellow at NASA Goddard Institute of Space Studies and recent Ph.D. at the Lamont-Doherty Earth Observatory, which is part of the Columbia Climate School.

Read More: Columbia Climate School