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

 

The latest update to this website was at 1005am Friday morning HST


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

1.97  Mount Waialeale, Kauai
0.46  Tunnel RG, Oahu
0.27  Puu Alii, Molokai
0.00  Lanai
5.58  West Wailuaiki, Maui
2.62  Saddle Quarry, Big Island


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

23  Port Allen, Kauai – NE
32  Oahu Forest NWR, Oahu – ENE
28  Makapulapai, Molokai – ENE
35  Lanai 1, Lanai – NE
39  Kealaloloa Rg, Maui – NNE
47  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 (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 south associated with two tropical disturbances…one of which is Invest 90C (neither of which will threaten our islands)

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261911130-20261911920-GOES18-ABI-HI-14-600x600.gif

Variable low clouds…showery clouds impacting the state locally…high clouds in the vicinity

 

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

453am, it’s mostly clear here in upper Kula with calm winds, and a low temperature at my place of 59 degrees…with the relative humidity 87%

1005am, it was clear when I got up and looked outside, then the next thing it turned very cloudy, and now it’s turned partly cloudy…although sunshine to partly sunny prevails down on the south coast in Kihei and Wailea.

 

>>> Highest Temperature Thursday, July 9, 2026 – 121 near Topock, AZ
>>> Lowest Temperature Friday, July 10, 2026 – 25 degrees at Peter Sinks

 

Hawaii’s Weather Highlights…as of Friday morning:  Strong high pressure far north of the state will continue to produce breezy trades through the weekend and into the beginning of next week. An increase in moisture will bring enhanced showers to windward and mountain locations this weekend, particularly Saturday night into Sunday morning. The next plume of moisture could then arrive by the middle of next week, otherwise a typical summertime trade wind shower distribution is expected.

Weather Commentary…as of Friday morning: A large high of 1035 millibars will linger over the far northeast Pacific for the next ten days, keeping trades breezy with slight easing expected by the middle of next week.

Showers will focus over typical windward and mountain areas with most of the shower activity during the overnight hours. An area of enhanced moisture is expected to move through the island chain early Sunday morning, boosting windward and mountain showers and even a few leeward showers.

Next week looks like a fairly typical summertime trade wind pattern, with a band of enhanced showers potentially moving through the island chain by mid-week. Latest ensemble runs suggest next week that the deeper tropics could become more active and the subtropical jet stream will shift north of the islands.

Anticyclonic flow would build aloft southeast of the islands, and deeper tropical moisture could gradually get established to our south. This pattern change doesn’t look like it will impact us in the short term, but is something we should be watching in the following days.

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 Friday morning: Strong high pressure centered north of the state will remain nearly stationary through the forecast period. Fresh to strong trade winds are expected across the entirety of the coastal waters. A Small Craft Advisory (SCA) remains in effect through Friday afternoon for all Hawaiian waters. Trades will remain fresh to strong through the weekend so the SCA may need to be extended.

The current small medium-period south-southwest (190-200 degrees) swell will continue to gradually decline today. 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 source, could be more inconsistent than the current swell.

Surf along east-facing shores will remain rough and choppy through the forecast period as fresh to strong trades hold. A series of small, moderate- to long-period west (270 to 280 degrees) swells are expected to arrive late today and hold into early next week, sourced from Typhoon Bavi in the far western Pacific. Surf along north-facing shores is expected to remain flat to tiny, with no significant swells forecast from 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 Sunday through the first half of next week.

 

Nature and Scenery of Hawaii – Wendy Roberts Fine Art


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 is likely to form next week while the system moves generally west-northwestward.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…high…70 percent 

 

>>> Central and Western East Pacific:

Another area of low pressure could form by early next week well southwest of the Baja California peninsula. Some slow development of this system is possible next week while it moves slowly northwestward.

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

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

 

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

Invest 90C

Recent satellite-derived wind data indicate that the area of disturbed weather located several hundred miles south-southeast of the Hawaiian Islands does not have a closed surface wind circulation. Environmental conditions appear conducive for gradual development of this system through early next week, and a tropical depression could form while the system moves generally westward across the central Pacific, remaining well south of the Hawaiian Islands.

* Formation chance through 48 hours…medium…40 percent
* Formation chance through 7 days…medium…50 percent

 

>>> Well Southeast of the Hawaiian Islands:

A trough of low pressure with a small cluster of showers and thunderstorms continues to move generally westward and is located about 800 miles southeast of the Hawaiian Islands. Environmental conditions appear favorable for some slow development of this system, and a tropical depression could form next week as it moves mainly westward over the central Pacific, remaining well south of the Hawaiian Islands.

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

 

>>> Northwest Pacific Ocean: 

Tropical Cyclone 09W (Bavi)…is located approximately 248 NM south-southwest of Kadena AB

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

https://www.metoc.navy.mil/jtwc/products/09W_101200sair.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 Leaves Northern Tree Swallows Most Vulnerable

Tree swallows in the northern U.S. and Canada face the greatest risk from climate change despite responding to temperature the same way as tree swallows in the southern U.S, according to a new study led by Cornell researchers that analyzed nearly 95,000 nests across five decades.

The findings, published in Proceedings of the National Academy of Sciences, reveal a critical timing squeeze for tree swallows in the northern half of the United States and Canada, putting them at risk.

Tree swallows are aerial insectivores, a group of birds that has experienced steep population declines across North America. As birds that eat flying insects, they serve as important indicators of ecosystem health and climate impacts.

The collaborative effort involved 28 research groups across North America, plus data collected by 40,000 people for participatory science programs including NestWatch, run by the Cornell Lab of Ornithology. The team analyzed tree swallow nesting records and temperature from 1966 to 2024 at 123 sites spanning Alaska to the southern United States, in one of the most comprehensive analyses of geographic climate sensitivity ever conducted for a wild bird species. The team also used data that birdwatchers shared with the Lab of Ornithology’s eBird program to estimate arrival time of swallows on the breeding grounds.

Read More: Cornell University