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

 

The latest update to this website was at 916am Wednesday morning HST


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

0.59  Lower Limahuli, Kauai
0.36  Tunnel RG, Oahu
0.16  Honolimaloo, Molokai
0.00  Lanai City, Lanai
0.48  West Wailuaiki, Maui
0.72  Keaumo, Big Island


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

10  Lawai, Kauai – ENE
21  Oahu Forest NWR, Oahu – ESE
23  Makapulapai, Molokai – E
24  Lanai 1, Lanai – NE
20  Honoapiilani, Maui – NNE
18  South Point, Big Island – SE


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

Cold front northwest…Tropical Disturbance far east-southeast (no threat to Hawaii) 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261681030-20261681820-GOES18-ABI-HI-14-600x600.gif

Variable low clouds…showery area just south  

 

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

It’s it’s mostly clear to partly cloudy, with calm winds at my place, and with a low temperature of 56.5 degrees and the relative humidity is 81%

 

>>> Highest Temperature Tuesday, June 16, 2026 – 119 at Death Valley, CA
>>> Lowest Temperature Wednesday, June 17, 2026 – 32 degrees at Angel Fire, NM

 

Hawaii’s Broad Brush Weather Overview…as of Wednesday morning: Lighter winds will support daytime sea breezes and nighttime land breezes today through Friday. Thus, most cloud cover and shower activity will favor interior and mountain areas during the afternoons. Deeper moisture associated with a weak trough will move northward from the southeast through Friday, and will briefly increase shower chances island- by-island as it weakens. A more typical trade wind pattern will return late this coming weekend.

Weather Details for the Hawaiian Islands…as of Wednesday morning: Latest satellite and radar imagery shows scattered showers across the area. More persistent showers are moving onto and over the Big Island, as a weak trough continues its march up the island chain. The trough should be near Maui tonight and possibly near or over Oahu by Thursday afternoon. As this weakening trough moves up the island chain expect a slight increase in showers before the trough moves away.

A series of cold fronts will move across the North Pacific well north of the island chain. This should disrupt the moderate trades weakening them through Friday. This should lead to sea and land breezes for the next few days. Clouds and showers should mainly be limited to over the island interiors and mountainous terrain, particularly during the days. The exception being the previously discussed weakening trough moving across the island chain.

After a brief period of east-southeasterly flow Saturday, moderate easterly trades will return during the second half of the weekend. Some light windward and mountain showers will return, but fairly dry conditions will keep the showers limited.

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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 morning: A ridge of high pressure north of the state is driving gentle to locally moderate easterly trades, as a front to the northwest pushes the ridge east of the coastal waters. The ridge will strengthen north of the area over weekend, as the trough weakens and lifts far north, allowing moderate to fresh trades to return.

Surf along south facing shores will remain elevated, as the current swell gradually declines through the evening. The High Surf Advisory (HSA) has been cancelled but may need to be reissued Thursday, as another moderate, long period south-southwest swell is expected to fill in tonight and peak Thursday before slowly fading Friday through the weekend. Surf along north facing shores will remain flat to tiny through the forecast period. Surf along east facing shores will remain below average, as easterly trade winds ease through the end of the week.

The Coastal Flood Statement has been cancelled as the peak high tides and the south swell have begun to decline. The Marine Weather Statement has also been cancelled due to the declining south swell.

 


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: 

Tropical Cyclone 01L (Arthur)…is located about 40 miles east-northeast of O’connor, Texas

TROPICAL STORM ARTHUR DEVELOPS NEAR THE MIDDLE TEXAS COAST …LIFE-THREATENING FLOODING EXPECTED ACROSS PORTIONS OF THE SOUTHEASTERN UNITED STATES

According to the NHC Advisory number 5 

Arthur is moving toward the northeast near 9 mph, and an increase in forward speed is expected today. On the forecast track, the low pressure area should move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight.

Surface observations and data from the Air Force Reserve Hurricane Hunters indicate that maximum sustained winds have increased to near 40 mph with higher gusts. Little change in strength is expected before the center moves over land. Weakening is anticipated once the low moves inland, and it could dissipate by tonight or early Thursday.

Tropical-storm-force winds extend outward up to 175 miles from the center. NOAA buoy 42035 east of Galveston recently reported a sustained wind of 38 mph and a gust of 43 mph. The Scholes International Airport in Galveston recently reported a wind gust of 48 mph.

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

 

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

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

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: Climate Change Presents New Challenges Regarding Water Regulation for Plants

How exactly do plants regulate their uptake and release of water during drought stress? This is what the new research unit SOPHY, which is funded by the German Research Foundation (DFG), is investigating. Professor Christiane Werner, Professor of Ecosystem Physiology at the University of Freiburg’s Faculty of Environment and Natural Resources, and her colleague Dr Simon Haberstroh are involved. In this interview Werner talks about how through SOPHY researchers can study the interaction and adaptation of plants during drought phases.

Professor Werner, you study the reactions of plants and entire ecosystems to climate change. What exactly is your new research unit investigating?

At the SOPHY Research Unit we want to improve our understanding of how the entire system of water regulation functions across every level – starting with the soil structure, through water uptake into the roots and transportation into the plant via its water transport system, the xylem, right up to regulation in the leaves and the release of water into the atmosphere. In Freiburg we are looking at the interaction between plants in particular, that is, the question of how plant communities use water – competitively or collaboratively.

Read More: University of Freiburg