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

 

The latest update to this website was at 839pm Wednesday evening HST


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

0.78  Mount Waialeale, Kauai
0.48  Schofield East, Oahu
0.64  Puu Alii, Molokai
0.00  Lanai
1.98  Puu Kukui, Maui
2.10  Kawainui Stream, Big Island


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

35  Port Allen, Kauai – E
37  Kuaokala, Oahu – NE
31  Makapulapai, Molokai – ESE
42  Lanai 1, Lanai – NE
44  Ukumehame Gulch, Maui – ENE
31  Hokuloa, 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 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/13/20261892110-20261900500-GOES18-ABI-HI-13-600x600.gif

Variable low clouds…showery clouds impacting parts of the state

 

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

554am, it’s mostly clear here in upper Kula with calm winds, and a low temperature at my place of 52.5 degrees…with the relative humidity 78%

318pm, played pickleball in Makawao, very fun as usual!

It just started to lightly raining here in upper Kula, which is great in my opinion.

523pm, it’s sunny at the moment here in upper Kula, although there are lots of cloudy areas with showers around, although not down along the leeward beaches.

6pm, cloudy with light rain.

835pm, clear to partly cloudy here at my Kula weather tower, with the temperature having cooled off to a comfortable 64.9 degrees. You know, just for contrast, during a cold evening in the winter months, at this same time, I’ve had the temperature be 48 degrees! As I recall that next morning had the coldest temperature I’ve had in the last 23 years here at this place, which was an incredible 37.9 degrees!

 

>>> Highest Temperature Wednesday, July 8, 2026 – 118 at Stovepipe Wells, CA
>>> Lowest Temperature Wednesday, July 8, 2026 – 29 degrees at Peter Sinks

 

Hawaii’s Weather Highlights…as of Wednesday evening: Breezy trades deliver showers windward and mountain areas into the weekend. Potential for moderate rain along select windward slopes potentially lingering into the weekend.

Weather Commentary…as of Wednesday evening: Stagnant upper air pattern persists as the islands remain under the influence of a narrow upper ridge axis, flanked on either side by cutoff lows. Governing high pressure changes very little, leaving the islands in a rather typical breezy trade wind pattern. A transition to a wetter trade wind pattern commences tonight as visible imagery shows a band of shower-bearing cumulus advancing toward Maui County this afternoon. This band of showers is oriented perpendicular to the island chain, and as such poses the potential to bring a few inches of rain to select windward locales as showers become established.

Given observed motion and latest guidance, suspect Kauai may be the most likely to experience several hours of moderate shower activity potentially lingering into Thursday. This airmass will bring dewpoints into the low 70’s and maintain the ongoing period of wetter trades into the weekend. Continued breezy trades will help take the edge off of mugginess, as higher humidity builds. General signal from the medium range guidance is for increased shower coverage to continue into early next week, predominantly overnight and during the early morning hours.

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 evening: Strong high pressure centered north of the state continues to drive fresh to strong trade winds across all coastal waters. Hi-resolution guidance keeps Small Craft Advisory (SCA) winds in many of the coastal water waters. Very little change is expected to the strength of the high or the pressure gradient across the islands, so will continue to remain around the advisory threshold for most waters over the coming days. The SCA will likely be extended for the typical windy waters around the Big Island and Maui County at a minimum, but additional waters might need to be included.

A small to moderate, medium-period south southwest (190-200 degrees) swell continues to generate moderate surf below advisory criteria along south facing shores. This swell energy will gradually lower through the remainder of the week. Expect small surf for south facing shores leading into this weekend A small to moderate, long-period southwest swell (220 degrees) is expected to fill in Saturday into early next week, but due to its Tasman Sea source, could be more inconsistent than the current swell.

Surf along east facing shores will remain rough and choppy through the week as fresh to strong trades hold. A series of small, moderate- to long-period west (270 to 280 degrees) swells are expected to arrive this weekend and linger into early next week, sourced from Typhoon Bavi in the far western Pacific. No significant swells are expected out of the north or northwest.

Looking ahead, higher than normal high tides will be possible beginning during the latter half of this weekend. Interests immediately along the coasts in low-lying or vulnerable areas should continue to monitor forecasts for possible coastal flooding due to the King Tides, from Sunday through the first half of next week.

 

One Year After Maui's Wildfires, Meet the Locals Ensuring Travel Helps the Island Heal | Condé Nast Traveler


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 cyclones

>>> Offshore of Southwestern Mexico:

An area of low pressure is expected to form late this weekend or early next week several hundred miles south-southwest of the coast of southwestern Mexico. Environmental conditions appear favorable for gradual development thereafter, and a tropical depression could form next week while the system moves generally west-northwestward.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…medium…50 percent 

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

 

>>> Central Pacific: There are no active tropical cyclones

A trough of low pressure located several hundred miles southeast of the Hawaiian Islands continues to produce disorganized showers and thunderstorms. Environmental conditions appear favorable for gradual development of this system later this week into early next week, and a tropical depression could form as the system moves westward to west-northwestward across the central Pacific, remaining well south of the Hawaiian Islands.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…medium…60 percent

 

>>> Well Southeast of the Hawaiian Islands:

Another area of showers and thunderstorms is associated with a trough of low pressure located more than 1000 miles east-southeast of the Hawaiian Islands. Environmental conditions appear favorable for slow development of this system this weekend into early next week as it moves westward or west-southwestward into the central Pacific, remaining well south of the Hawaiian Islands.

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

Here’s the link to the Central Pacific Hurricane Center (CPHC)

 

>>> Northwest Pacific Ocean: 

Tropical Cyclone 09W (Bavi)…is located approximately 506 NM south-southeast of Kadena AB

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:  Human Activity Has Driven Retreat of Antarctica’s Fastest Melting Glacier

The first study to directly attribute Antarctic glacier retreat to climate change shows Pine Island Glacier was pushed significantly further by human driven warming.

Human-driven climate change significantly intensified the retreat of one the most important glaciers in the Antarctica during the twentieth century.

The Pine Island Glacier, which drains a large part of the West Antarctic Ice Sheet into the Amundsen Sea, is one of the single biggest contributors to global sea level rise.

This landmark research, led by scientists at King’s College London and the British Antarctic Survey and published in The Cryosphere, is the first study to directly attribute the changes of a major Antarctic outlet glacier to the activities of humans.

Read More: King’s College London