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

 

The latest update to this website was at 840pm Wednesday evening HST


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

0.56  Mount Waialeale, Kauai
0.84  Manoa Lyon Arboretum, Oahu
0.77  Puu Alii, Molokai
1.12  Lanai City, Lanai
3.03  Puu Kukui, Maui
1.40  IPIF, Big Island


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

18  Nawiliwili, Kauai – NE
30  Kuaokala, Oahu – NE
27  Molokai AP, Molokai – NE 
24  Lanai 1, Lanai – NE
36  Na Kula, Maui – NE
24  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. 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

 

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Cold front far northwest…thunderstorm far south

 

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Variable low clouds…high cirrus arriving at times from the west

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

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Localized showers 

 

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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

It’s variably cloudy with some localized showers here in Maui County, with a light breeze at times at my place, and with a low temperature of 58.5 degrees and the relative humidity is 85%

915am, it’s cloudy in many areas, with showers falling locally, some of which are falling here in upper Kula.

1145am, Pickleball was cancelled this morning in Makawao…grrr. I was almost there when I got the word, so I took a detour to the Pukalani Superette and picked up some nice apple bananas. I stopped off in Kula to get some gas for my car, before getting home to a definite rainy day here, at least so far.

414pm, the numerous light showers this morning into the afternoon hours seem to have backed-off, although it’s still quite cloudy from my point of view.

724pm, here in upper Kula we’re going in and out of dense fog, and here at my place the temperature has dropped to 64.9 degrees with the relative humidity 83%


>>> Highest Temperature Wednesday, June 10, 2026 – 113 at Death Valley, CA
>>> Lowest Temperature Wednesday, June 10, 2026 – 28 degrees near Mackay, ID

 

Hawaii’s Broad Brush Weather Overview…as of Wednesday evening: Breezy easterly trade winds will persist through tonight, then ease into the light to moderate range from Thursday through Saturday. Clouds and showers will favor windward and mountain areas, with a period of increased shower activity through early Thursday, as a band of moisture moves through the islands. A few afternoon clouds and showers may develop over interior and leeward areas Thursday through Saturday where localized sea breezes form. Trade winds are expected to strengthen again late this weekend and into early next week.

Update: Latest observations from satellite and radar imagery continue to show scattered showers moving into windward and mountain areas spanning across much of the state. Precipitation amounts have generally remained a tenth of an inch or less, with exception to windward Big Island, namely around the Hilo area, where rainfall has nearly doubled. Based on previous readings, rainfall has eased significantly compared to earlier today. Trades also remain moderate across much of the state, however, are expected to ease gradually ease throughout the next couple of days.

Weather Details for the Hawaiian Islands…as of Wednesday evening: A pocket of moisture embedded in the trade wind flow will continue to move across the island chain through Thursday morning, bringing scattered windward and mountain showers overnight into the morning hours. As drier air fills in behind it during the day on Thursday, shower coverage will decrease, with drier conditions expected through the weekend.

Breezy trades will gradually ease over the next couple of days, as the ridge to the north of the state weakens. The transition to a lighter wind flow will allow for continued windward to mountain showers, as limited moisture moves in on the trades, and the addition of leeward and interior clouds and showers as sea breezes develop each afternoon. Any showers during this period will likely be light and brief due to the limited available moisture.

Model guidance suggests that moderate to locally breezy trades will try to become reestablished by early next week, as surface ridging builds northeast of the state. With the next band of moisture expected to arrive sometime Sunday night into Monday, and more moisture building into the area by mid-week, there will be periodic increases in windward and mountain showers Sunday night onward.

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 Environmental Conditions…as of Wednesday evening: Surface ridge north of the area will weaken Thursday through Saturday as a front passes far north of the state. Moderate to fresh trades will ease to gentle to moderate category during this time. Fresh to locally strong easterly trades will return Sunday through early next week as the surface ridges strengthens north of the state.

Currently, a small, medium-period south swell is fading generating small, inconsistent sets along south facing shores and should be even smaller by Thursday. A series of small pulses of south-southwest swells will fill in late Thursday into Friday, reviving near average surf along south facing shores.

Long-period energy from a storm that passed within our swell window around New Zealand earlier this week, is expected to gradually fill in locally late Friday through the weekend. Wave models have this swell peaking Sunday into Monday that will drive surf heights near or above warning levels. This swell will coincide with the peak monthly tides and will likely lead to significant wave runup and minor coastal flooding during the first half of next week, particularly during the peak daily high tide cycles. South shore surf will remain elevated through much of next week due to the slow decline of this large south swell and a series of more overlapping southerly swells.

East shore surf will slowly decline below seasonal averages through the rest of the week and into the weekend as trades ease. Surf along east facing shores will pick up a notch next week as more breezy trades return. No significant swells expected elsewhere.

 


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

Bay of Campeche:

A broad area of low pressure could form over the Bay of Campeche on Friday from a westward-moving tropical wave currently located over the northwestern Caribbean Sea. Environmental conditions are forecast to be only marginally conducive for development, and the system should move inland over eastern Mexico by late this weekend.

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

>>> Gulf of America: There are no active tropical cyclones

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

 

Post-Tropical Cyclone 03E (Cristina) – Final Advisory

CRISTINA DEGENERATES TO A WEAK TROUGH OF LOW PRESSURE NEAR THE COAST OF EL SALVADOR

According to the NHC advisory number 13…Cristina is located about 35 miles south of San Salvador, El Salvador

The remnants are moving toward the northwest near 7 mph, and this general motion is expected to continue today. Maximum sustained winds have decreased to near 25 mph with higher gusts.

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

 

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

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

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

 

>>> Northwest Pacific Ocean:  There are no active tropical cyclones

>>> 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: Plants Could Be Used to Grow Medicines in Space, Study Shows

Astronauts on long space missions may one day use plants to produce fresh stocks of medicines on demand, thanks to new research by engineers at the University of California San Diego. The team developed a simple method to grow and repeatedly harvest pharmaceuticals from plants under space-like conditions, without destroying the plants or generating large amounts of waste. The method could also help bring low-cost pharmaceutical production to resource-limited areas on Earth.

The findings were published on June 5 in NPJ Science of Plants.

One of the biggest challenges of space travel is keeping astronauts supplied with safe, effective medications. Many drugs degrade more quickly in space. Even aboard the International Space Station, more than half of the medications stocked there have been found to expire within three years. That’s barely long enough for a trip to Mars, which can take around 200 days each way. Regularly resupplying medications simply isn’t feasible millions of miles from Earth.

Plants offer a promising solution because they can act as mini factories for pharmaceuticals.

Read More: University of California – San Diego

Image: UC San Diego engineers are growing plants in simulated space conditions to explore their potential for producing pharmaceuticals in space.