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

 

The latest update to this website was at 1211pm Sunday afternoon HST


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

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 afternoon: 

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/GEOCOLOR/20262141340-20262142130-GOES18-ABI-HI-GEOCOLOR-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%

1203pm, very sunny except for clouds along the windward side of east Maui, with some showers falling.

 

>>> 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 afternoon: High pressure far northeast will drive trade winds today. Wind speeds will taper off through much of this coming week, as the remnant of former Tropical Cyclone Genevieve linger between the high and Hawaii. Clouds and showers will favor windward and mountain areas, with some enhancement possible for the western half of the state Tuesday through Thursday, due to an upper trough setting up to the west.

Weather Narrative..as of Sunday afternoon: A 1032 millibar high centered far northeast of Hawaii, will generate breezy trade winds today. Winds will carry in scattered low clouds and showers, focusing across windward slopes. Wind speeds will decline to gentle to moderate through much of the new week, as remnants of Tropical Cyclone Genevieve linger between Hawaii and the high pressure system.

Genevieve is now a post-tropical cyclone. It is not expected to impact Hawaii, aside from the decrease in wind speeds here in the islands. Model guidance continues to show an upper level trough near the western end of the state Tuesday through Thursday, which may provide some enhancement of incoming trade wind clouds and showers over the western half of the state. This feature will move north away from the area on Friday.

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.

 

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 afternoon: 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, 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. Winds are expected to decrease below SCA thresholds by Monday.

Surf along south facing shores will stay below seasonal averages, with mainly background energy throughout most of the new week. The next small, long period south swell will arrive by next Saturday, with a slight rise in south shore surf heights through next Sunday. 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 post-Tropical Cyclone Genevieve that will linger for next few days.

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

 

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