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

 

The latest update to this website was at 542am Sunday morning HST


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

0.04  Lihue, Kauai
0.17  Tunnel RG, Oahu
0.64  Puu Alii, Molokai
0.32  Lanai
0.73  Honolua, Maui
0.15  Kehena, Big Island


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

10  Lawai, Kauai – ENE
24  Oahu Forest NWR, Oahu – ENE 
15  Makapulapai, Molokai – SE
18  Lanai 1, Lanai – NE
17  Kealaloloa Rg, Maui – NNE
24  Kealakomo, Big Island – N 


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 northwest…thunderstorms far southeast (Tropical Disturbance…no threat to Hawaii)

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/14/20261650700-20261651450-GOES18-ABI-HI-14-600x600.gif

Variable low clouds 

 

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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 Sunday 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 55 degrees and the relative humidity is 88%

 

>>> Highest Temperature Saturday, June 13, 2026 – 119 at Death Valley, CA
>>> Lowest Temperature Sunday, June 14, 2026 – 23 degrees near White Sulphur Springs, MT

 

>>> Interesting Web Blog: Mauka Showers…Central North Pacific Tropical Cyclone Tracks in Strong El Niños, Part 2 – The Late Bloomer Years

 

Hawaii’s Broad Brush Weather Overview…as of Sunday morning: Surface high pressure strengthens to the northeast of the state today, and will bring an increase in trade wind flow. In addition, expect an increase in low cloud cover and shower activity through early Monday over windward portions of Maui, Molokai, and Oahu, as an area of enhanced moisture moves in from the east.

From late Monday through Friday, light easterly winds will return to the region. Afternoon coastal sea breezes should help to focus scattered clouds and isolated showers over mainly interior and mountainous locations. For the latter part of the week, deeper moisture moving in from the southeast could bring increased precipitation chances to the Big Island.

Weather Details for the Hawaiian Islands…as of Sunday morning: Latest radar and satellite imagery loops from this morning showed a band of enhanced low clouds and showers moving into Maui County from the east. For the most part, this activity has been light, though some brief pockets of heavier showers have been noted. A few stations on the West Maui mountains picked up just over half an inch of rainfall accumulation over the past 6 hours, but most windward sites reported less than a quarter inch.

Through the remainder of this morning, surface high pressure will gradually build well northeast of the state and allow trade winds to strengthen into the moderate range. By this afternoon, these trades should help to drive the aforementioned area of enhanced low clouds and showers westward over Oahu. A cross-section over Oahu shows the temperature inversion height deepening to around 8,000 to 9,000 feet.

Though most activity will affect windward sides of the island, the moisture level should be deep enough to allow for some showers to briefly spill over the terrain and onto leeward sides. For the Big Island, expect leeward showers to once again develop over the South Kona slopes in this afternoon during peak diurnal heating. By tonight, showers should be confined to windward areas on most islands, as moderate trades and residual moisture from the earlier band begin to exit the region.

Late Monday through Wednesday afternoon, the surface high weakens and moves north, once again allowing a return of light to locally moderate easterly wind flow. Scattered afternoon low clouds and isolated showers will likely be limited to the interior of islands, and over elevated terrain as diurnally driven sea breezes prevail. During the nights, isolated showers may affect windward locations, but nothing of significance.

Late Wednesday through Friday, both the GFS and ECMWF models have been consistent over the last several model runs in carrying an area of deeper moisture up from the southeast towards the Big Island. This moist layer, roughly 10,000 to 12,000 feet deep by current model estimates, would help enhance shower activity initially over the Big Island, then Maui county if it holds together.

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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 Sunday morning: A long-period south-southwest (200 degree) swell will continue to fill in today and peak tonight into Monday before gradually declining through the rest of the week. Buoy 51002, south of the islands, is observing around a 4 foot swell at 19 seconds this morning, with a peak observation exceeding 5 feet. As a result, surf heights along exposed south facing shores are forecast to hover near high- end advisory levels today, while west-facing shores see moderate surf. There is potential that as the swell reaches its peak tonight that surf could reach warning levels, along with advisory level surf for west facing shores. 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 continued overlapping southerly swells.

This swell will also coincide with the peak monthly tides which will add the potential for significant wave runup on top of minor coastal flooding potential during the monthly peak tides through the first half of next week. Once the peak swell passes, south shore surf will remain elevated through much of the week due to the slow decline of this large south swell and a series of continued overlapping southerly swells.

Very little swell energy is arriving along north facing shores, keeping surf tiny to flat. A small bump in surf is possible for north- facing shores on Tuesday with the arrival of a small northwest swell and a smaller north swell. Gentle to moderate east-northeasterly winds expected through next week will keep surf along east facing shores below seasonal average.

A Coastal Flood Statement remains in effect for minor coastal flooding of vulnerable low-lying coastal roadways, docks, boat ramps and other coastal infrastructure. King Tides combined with water levels that are running higher than predicted will lead to minor flooding potential around the daily peak tide, which will be during the late afternoon and early evening hours, through at least Tuesday. While minor coastal flooding is expected along all shorelines, the combination of the south-southwest swell, King Tides and the daily high tide will make low-lying coastal areas along south and west shores susceptible to more widespread coastal flooding through the first half of next week.

 

an island in the middle of a body of water


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

 

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

Northwestern Gulf: 

A broad area of low pressure located over eastern Mexico is producing disorganized shower and thunderstorm activity.

Development is not expected during the next day or so while the low remains inland over northeastern Mexico or southern Texas during the next day or so.

The system could then re-emerge over the northwestern Gulf of America around midweek while interacting with a frontal boundary, but conditions there are expected to be only marginally conducive for development.

* 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)

 

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

Well Southwest of the Baja California Peninsula:

An area of low pressure located well southwest of the Baja California Peninsula is producing showers and thunderstorms.

Environmental conditions could support some gradual development during the next couple of days while the system moves east-northeastward to northeastward at 5 to 10 mph.

By mid-week, dry air is expected to limit further development.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…low…30 percent

 

>>> 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: U-M Researchers Help Ocean Observations Snap into Focus

University of Michigan researchers have used a U.S. Navy ocean forecasting model to predict where internal tides occur in the ocean in order to bring ocean patterns important to weather forecasting and shipping into clearer focus.

In particular, scientists are interested in observing ocean patterns called small-scale oceanic eddies—small swirls of water that break off larger eddies created by the Gulf Stream—because they are instrumental in transporting heat and carbon in the ocean. Understanding them can also help the Navy predict weather forecast models for fleet operations, according to U-M oceanographer Brian Arbic.

In 2022, NASA and the French space agency CNES launched a satellite called SWOT, or the Surface Water and Ocean Topography mission, with the primary goal of observing small-scale eddies. SWOT can track ocean water movements on a minute scale, on the order of 5-to-10 kilometers rather than around 100 kilometers. However, internal tides—water that moves vertically up and down an ocean column—can mask images of the eddies observed by the satellite.

Read More: University of Michigan