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

 

The latest update to this website was at 844pm Tuesday evening HST


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

0.34  Kilohana, Kauai
0.02  Poamoho RG 2, Oahu
0.06  Puu Alii, Molokai
0.04  Lanai City, Lanai
0.97  West Wailuaiki, Maui
2.54  Kawainui Stream, Big Island


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

15  Port Allen, Kauai – W
20  Kuaokala, Oahu – NE 
23  Makapulapai, Molokai – E
20  Lanai 1, Lanai – NE
39  Na Kula, Maui – ESE
33  Puuloa, 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

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

Upper level low northwest with thunderstorms…area of disturbed weather (Invest 95E) far east-southeast

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261812130-20261820520-GOES18-ABI-HI-14-600x600.gif

                                Variable low clouds…altocumulus/cirrus clouds moving over us from the southwest                                                                                                                                                                                                                                                                                                                                                    

 

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

508am, it’s clear with a few altocumulus clouds here in upper Kula with calm winds, and a low temperature at my place of 54.5 degrees…with the relative humidity 81%

124pm, it’s partly to mostly cloudy here on Maui, and here in upper Kula, I’m getting a very light shower.

246pm, it’s wet here in upcountry Maui, with light showers falling, not unlike yesterday afternoon’s weather conditions.

412pm, it’s cloudy/foggy here in upper Kula, with light showers falling.

630pm, the clouds are breaking up and the sun is out as we head gradually towards the sunset hour.

725pm, the high level clouds lit up a wonderful pink/orange at sunset!

845pm, the clouds have cleared, at least the lower level clouds, and as a result my temperature had dropped to 61.8 degrees

 

>>> Highest Temperature Tuesday, June 30, 2026 – 106 at Rio Grande Village, CA
>>> Lowest Temperature Tuesday, June 30, 2026 – 19 degrees at Peter Sinks, UT

 

Hawaii’s Weather Highlights…as of Tuesday evening: A ridge to the north of the islands will maintain moderate to locally breezy trade winds into the weekend. Clouds and showers will be focused primarily along windward and mountain areas during the overnight and morning hours. Drier weather is expected during the second half of the week into the weekend. Higher than normal dew points will continue to bring muggier conditions to the islands over the next couple of days.

Short Term Update: The bulk of the moisture associated with the trough near the islands appears to be passing just north of Kauai tonight. Satellite derived precipitable water shows a much drier airmass upstream of the islands, which will likely move into the islands late Wednesday.

Weather Commentary…as of Tuesday evening: High pressure will remain far north of the state for the coming week as it slowly drifts west. Moderate to breezy trade winds will continue, with showers mainly windward and mountains, and more numerous at night. A trough appears on satellite imagery passing north of the islands. Upstream (east) of the islands, an enhanced cluster of cumulus clouds, indicating increased rain shower activity, has decreased significantly in intensity. These features will track westward across the islands tonight through Wednesday, bringing increased shower activity to windward and mountain areas, and increasing the chance for noticeable spillover to leeward areas. Brief heavy rain is possible, but the risk for flooding is low.

Humidity levels will increase tonight as this pocket of moisture arrives, but the more well-defined trough will skirt north of the islands, meaning the most significant increase in moisture/rainfall is expected to miss the islands. As a result, rain shower coverage and intensity has been somewhat decreased in the forecast.

Drier (more seasonal) conditions are then expected from Wednesday night into the weekend, as humidity levels decrease once again. There is some potential for low-level moisture to increase again this weekend. Temperatures aloft remain quite warm, which means there will be no additional upper-level support for very heavy precipitation or thunderstorms.

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 Tuesday evening: Surface high pressure far north-northeast of the islands will slowly drift west, keeping moderate to locally strong trade winds through Wednesday before declining slightly through the rest of the forecast period. The Small Craft Advisory (SCA) is in effect through Wednesday afternoon for the windier waters and channels around Maui County and the Big Island, and may be extended through Wednesday night.

The small, medium period south swell will keep surf heights elevated along south facing shores before declining Wednesday. A series of small, medium to long period south-southwesterly swells are expected Thursday through the weekend. Surf along east facing shores will remain rough and choppy and increase Wednesday, as trade winds increase. Surf along north facing shores will remain flat to tiny through the forecast period.

 

Natural Area Reserves System – Division of Forestry and Wildlife: Native Ecosystems Protection & Management


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)

 

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

Western East Pacific:

Invest 95E

Showers and thunderstorms have become better organized in association with the area of low pressure located well to the west-southwest of the southern tip of the Baja California Peninsula. Additionally, satellite wind data indicate that the area of low pressure has become better defined and is producing winds to 35 mph. If current trends continue, then advisories on a tropical depression would likely be initiated on Wednesday morning, while the system moves generally north-northwestward or northward.

* Formation chance through 48 hours…high…100 percent
* Formation chance through 7 days…high…100 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 09W…is located approximately 151 NM east-southeast of Ulelang

https://www.metoc.navy.mil/jtwc/products/wp0926.gif

 

>>> 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:  Pollution Is Changing the Smells of Nature, With Risks for Wildlife

In Egypt, increasing temperatures are shrinking yields of aromatic jasmine flowers; in France, extreme drought has reduced the production of fragrant, night-blooming tuberose, a major ingredient in many perfumes; in Italy, climatic extremes are altering the characteristic floral, citrusy scent of bergamot.

But anthropogenic factors are also reshaping environmental smellscapes, a word coined in the 1980s to describe the totality of scents in a given geographic area, in ways that are far more subtle — and potentially much more harmful.

While humans largely rely on sight and sound in our interactions with each other and with the world around us, many other creatures rely on smells. Ants, for example, require scents for colony cohesion; turkey vultures let scent guide them to far-away carrion; and male moths use scent to find females hundreds of meters away. “Scent is very important because it mediates so many interactions within an ecosystem,” says James Blande, a chemical ecologist at the University of Eastern Finland.

Read More at: Yale Environment 360