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

 

The latest update to this website was at 510pm Saturday evening HST


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

0.44  Mount Waialeale, Kauai
0.21  Manoa Lyon Arboretum, Oahu
0.24  Puu Alii, Molokai
0.00  Lanai
0.68  West Wailuaiki, Maui
1.39  Piihonua, Big Island


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

23  Nawiliwili, Kauai – NE
36  Kuaokala, Oahu – NE 
32  Molokai AP, Molokai – NE 
27  Lanai 1, Lanai – NE
43  Na Kula, Maui – NE
35  Lalamilo, Big Island – NNE


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

 Tropical Cyclone 01E (Amanda) in the eastern Pacific (it won’t be a threat to Hawaii)

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261571640-20261580030-GOES18-ABI-HI-GEOCOLOR-600x600.gif

Variable low clouds 

 

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 the current Watches, Warnings and Advisories noted above




~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Saturday comments:  I’m at home here in upper Kula, Maui, Hawaii

It’s mostly clear with some clouds along the windward sides here in Maui County, with calm winds at my place, and with a chilly low of 49 degrees and the relative humidity is 75%


>>> Highest Temperature Saturday, June 6, 2026 – 113 degrees at Death Valley, CA
>>> Lowest Temperature Saturday, June 6, 2026 – 24 degrees at Stehekin, WA

 

>>> Interesting Web blog:  Mauka Showers…Central North Pacific Tropical Cyclone Tracks in Strong El Niño Summers

 

Hawaii’s Broad Brush Weather Overview…as of Saturday evening: Breezy trades will persist through this weekend, then gradually weaken to moderate speeds by the latter half of next week. Periodic showers will filter in on the trade wind flow, mainly focusing over windward and mountain areas. By next weekend, the background flow may become light enough to support land and sea breeze development.

Weather Details for the Hawaiian Islands…as of Saturday evening: Radar and visible satellite imagery show isolated showers moving into windward and mountain areas across the state. A surface ridge extending over the region from the northeast continues to supply very stable conditions, with the upper air soundings at Lihue and Hilo showing strong inversions at 5,000 feet and 7,000 feet respectively. Based on the upstream cumulus, brief showers will continue to be ushered into windward and mountain areas under the inversion, on the breezy trades with a slight increase in shower coverage expected overnight into early Sunday morning.

The forecast through next week revolves around gradual fluctuations in trade wind speeds and the timing of minor batches of moisture, that will move across the state on the trade wind flow. Guidance remains in good agreement on the surface high to the northeast of the state continuing to drive breezy east-northeast trades across the state through Sunday. This high will weaken slightly early next week, then get pushed further northeastward through the rest of the week, as a series of lows move across the northern Pacific and a front approaches from the northwest.

The evolution of the surface high will cause the trades to gradually ease through the upcoming week. For the latter end of next week, background winds may be light enough to support land and sea breeze development, bringing afternoon clouds and showers to leeward and interior areas and partial clearing at night.

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 Saturday evening: High pressure centered far northeast of the islands will weaken slightly Sunday, leading to a subtle decrease in trade winds. A Small Craft Advisory (SCA) remains in effect for all waters, and with the expected drop in the trades, the SCA has been trimmed back to the typically windy waters around Big Island and Maui for Sunday and Monday. During the middle of next week, a ridge north of the islands associated with the high will be weakened and depressed southward. As a result, trades will drop further and allow the SCA to be cancelled entirely Tuesday or Wednesday.

The current south swell will continue to gradually decline through Sunday, with high uncertainty regarding the next swell that will arrive Sunday night and Monday. Nearshore PacIOOS buoys are measuring the dropping swell at 13 to 14 seconds, which is producing inconsistent sets to near June average. As this swell fades late Sunday, long-period forerunners of the next south should arrive. The new swell was aimed well east of Hawaii, and while this means high uncertainty regarding how much energy will be received locally, there is potential for south shore surf to be around or slightly higher than June average Monday into Wednesday. A smaller pulse of south- southwest swell is due Thursday and Friday, and a more significant south-southwest swell is on track to arrive next weekend.

Along north-facing shores, a small short-period north swell will fade, and a small west-northwest swell will produce tiny north shore surf early next week. Rough surf along east- facing shores will remain around seasonal average through Sunday, then slowly decline through the middle of next week as trade winds ease.

 

Tunnels Beach - Hawaii Travel Guide


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)

 

>>> Eastern Pacific: 

Tropical Cyclone 01E (Amanda)

AMANDA FORECAST TO BECOME A REMNANT LOW ON SUNDAY

According to the NHC advisory number 18…Amanda is located about 1440 ESE of Hilo, Hawaii

The depression is moving toward the southwest near 3 mph, and this general motion is expected to continue through Sunday, followed by a turn toward the west-southwest Sunday night or Monday. Maximum sustained winds are near 35 mph with higher gusts. Amanda is expected to continue weakening and become a remnant low by late Sunday.

 

>>> Offshore Southern and Southwestern Mexico:

Invest 91E

A low pressure system located a couple of hundred miles south of Zihuatanejo, Mexico is producing a broad area of showers and thunderstorms. This system has become more organized today and a tropical depression will likely form tonight or tomorrow. The disturbance is forecast to move northeastward and then northward, and will approach the coast of southern Mexico Sunday night and Monday. Interests in southern Mexico should monitor the progress of this system. Regardless of development, heavy rainfall and life-threatening flash flooding are possible across portions of southern Mexico through early next week.

* Formation chance through 48 hours…high…80 percent
* Formation chance through 7 days…high…80 percent

 

>>> Offshore of Central America:

Invest 92E

Shower and thunderstorm activity associated with a broad area of low pressure offshore of Central America has changed little in organization during the last several hours. Additional development is still expected, and a tropical depression is likely to form during the next day or two while the system moves slowly northward toward the coast of Central America. Interests along the Pacific coasts of northwestern Costa Rica, Nicaragua, Honduras, and El Salvador should monitor the progress of this system. Regardless of development, heavy rainfall and life-threatening flash flooding are possible across portions of Costa Rica, Nicaragua, El Salvador, and Guatemala through early next week.

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

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:  A Plan to Preserve Wetlands Without Stopping Development

Balancing economic growth and environmental protection is not easy. Consider wetlands, which provide flood protection, aid water quality, and are linchpins of larger ecosystems. How can we best preserve wetlands while enhancing economic activity?

According to a new study, one solution involves supplanting traditional conservation mandates, which require replacing affected wetlands locally, with tradeable offsets. Through this system, a developer can build on a wetland by purchasing credits representing an equivalent environmental value created by improving a wetland somewhere else in the same watershed, away from concentrated development.

While this has largely been the approach of U.S. federal and state regulators since the mid-1990s, current regulations do not account for the flood protection benefits of wetlands. The new study finds a workable solution in an offset policy that also includes a locally varying tax on development, precisely to compensate for the increased flood risk it causes.

Read More at: Massachusetts Institute of Technology