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

 

The latest update to this website was at 522am Monday morning HST


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

0.29  Mount Waialeale, Kauai
0.80  Tunnel RG, Oahu
0.45  Puu Alii, Molokai
0.00  Lanai City, Lanai
1.60  West Wailuaiki, Maui
1.31  Kawainui Stream, Big Island


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

21  Port Allen, Kauai – NE
37  Kuaokala, Oahu – SW  
17  Makapulapai, Molokai – ESE
m  Lanai 1, Lanai – m
27  Kealaloloa Rg, Maui – NNE 
21  Kealakomo, Big Island – NNE


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 southwest…former Genevieve far northeast 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20262150650-20262151440-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 Monday comments:  I’m at home here in upper Kula, Maui, Hawaii

523am, it’s clear here in upper Kula with calm winds, and a low temperature at my place of 55 degrees…with the relative humidity 80%

 

>>> Highest Temperature Sunday, August 2, 2026 – 124 degrees at Death Valley, CA

>>> Lowest Temperature Sunday, August 2, 2026 – 32 degrees at La Pine, OR

 

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

 

Hawaii’s Weather Highlights…as of Monday morning: Trade winds will taper off through much of this week, as remnants of Tropical Cyclone Genevieve linger between the high to our northeast and our Hawaiian Islands. 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 our west.

Weather Narrative..as of Monday morning: Satellite and radar imagery shows showers and low clouds moving on the trades. Most of the showers are impacting windward and mountain locations. Wind speeds will decline to gentle to moderate levels through much of this new week, as remnants of former Tropical Cyclone Genevieve linger between us and the trade wind producing high pressure system.

Former Genevieve isn’t expected to impact Hawaii,  aside from the decrease in wind speeds. Model guidance continues to show an upper level trough of low pressure near the western end of the state Tuesday through Thursday, which may provide some enhancement of incoming trade wind clouds and showers. This feature will move north away from the area on Friday.

Models are hinting at some incoming tropical moisture along a trough connected to the deeper tropics to our south. Trades will push this area of moisture across Big Island and Maui with time.

 

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 Monday morning: A ridge of high pressure north of the state will continue to weaken over the next several days, as a cold front passes by far north of the state. Trade wind speeds will weaken in response, lasting through Thursday. Trade winds should restrengthen by the end of the week, as high pressure builds far north of the state.

Surf along south facing shores will stay below seasonal averages, with mainly background energy throughout most of this week. The next small, long period south swell will arrive by Saturday, with a slight bump in south shore surf heights through Sunday. A series of south swells are expected the following week (week of Aug 9th), which should produce surf heights at or above seasonal averages.

East facing shores will remain rough and choppy with steady decreasing trends, as the trade winds ease through much of the week. Small, medium period easterly swell generated from former Tropical Cyclone Genevieve will linger over 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.

.

 

6 Secret Hawaiian Beaches


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

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

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 240 NM east of Iwo To

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

https://www.metoc.navy.mil/jtwc/products/12W_031200sair.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:  Climate Change Is Reshaping Northern Eurasia’s Carbon Sink

A new study analyzed data from multiple independent sources, ranging from satellite remote sensing-based machine learning products to state-of-the-art Earth System Models, to reveal how climate change shapes the Northern Eurasian carbon sink. The study confirms that Northern Eurasia accounts for nearly one-third of the global terrestrial carbon sink. It also shows that, despite warming faster than most regions worldwide, the northern high latitudes contribute little to strengthening the Northern Eurasian carbon sink because of their low baseline carbon uptake.

Northern Eurasia contains about 20% of the world’s forests and plays a crucial role in mitigating climate change by absorbing atmospheric carbon dioxide, thereby acting as a major carbon sink. However, understanding the region’s carbon sink is challenging because it is influenced by multiple interacting factors, including rapid climate change, wildfires, land-use change, and limited observational coverage across its vast extent.

A new study integrated evidence from multiple independent sources, including satellite observations, data-driven products, atmospheric inversion models, dynamic global vegetation models, and Earth System Models, to investigate how climate and climate change shape the Northern Eurasian carbon sink. Despite substantial differences among the data sources, the study found broad agreement that Northern Eurasian ecosystems absorb approximately 0.47 ± 0.20 billion tonnes of carbon annually, accounting for nearly one-third of the global terrestrial carbon sink.

Read More: University of Tsukuba

Image: Dense forest landscape near Mount Elbrus in Northern Eurasia