The latest update to this website was at 845pm Wednesday (HST)

 

Here are the highest temperatures Wednesday…and the lowest Wednesday morning:

85 – 78  Lihue AP, Kauai
85 – 72  Molokai AP, Molokai
90 – 66  Kahului AP, Maui – Record high Wednesday 94 in 2020
86 – 72  Kona AP, Big Island
85 – 69  Hilo, AP, Big Island

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

0.03  Mount Waialeale, Kauai
0.03  Kalahee Ridge, Oahu
0.03  Puu Alii, Molokai
0.00  Lanai
0.00  Maui
0.25  Kealakekua, Big Island

>>> There are lots of locations that measure rainfall and winds, here’s a map of all areas for your reference (the map is clickable to zoom in closer)

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

24  Port Allen, Kauai
27  Oahu Forest NWR, Oahu
27  Molokai AP, Molokai
21  Lanai 1, Lanai
36  Na Kula, Maui
25  Kealakomo, Big Island

Hawaii’s Mountains – Here’s a link to the live webcams on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii, and atop the Haleakala Crater (~10,023 feet) 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 far northwest…Tropical Cyclone Kiko far east-southeast 

 

https://www.weather.gov/images/hfo/satellite/Hawaii_IR_loop.gif

Low clouds locally…well developed cumulus clouds far south

 

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

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

Showers locally 

 

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 home here in upper Kula, Maui, Hawaii.

It’s mostly clear here in Maui County early this morning, although with some low clouds along the windward sides and some thin high cirrus as well. The low temperature at my place was a chilly 52.5 degrees…with a relative humidity of 72%.

1pm, partly sunny in general, and dry as can be. We have a mix of low, middle and higher level clouds, which if the middle and higher clouds are still around at sunset, we could see some more nice color like we’ve had the last several evenings.

647pm, it’s a beautiful sunset, with the high cirrus taking on a very pretty salmon color!

730pm, the moon is growing quickly, and will be full on Sunday, September 7th

822pm, clear skies, with the temperature here at my Kula weather tower having fallen to a chilly 59.1 degrees.

845pm, brrrr, the temperature under perfectly clear skies, has fallen to 57.9 degrees.

Weather Wit of the day:  Rainfall – A drop of water

>>> Highest Temperature Wednesday, September 3 , 2025 – 108 at Death Valley, California
>>> Lowest Temperature Wednesday, September 3, 2025 – 29 near Redfeather Lakes, Colorado

For you full-on weather nerds out there, like me, here’s a great new blog by a friend of mine, Kevin Kodama, the former Senior Service Hydrologist at the NWSFO in Honolulu…Mauka Showers

 

Monthly Precipitation Summary
State of Hawaii
Month: August 2025

Prepared: September 2, 2025

The theme for August was “Dry, Drier and Driest.” Aside from a few modest rainfall events helping to boost a few sites to average or above, the majority of the state came in with below average totals for the month, including around a quarter of the gauges in this summary with their driest August on record. Breezy to locally windy trades began the month, before easing to light to moderate speeds over the next couple of days. Aside from light windward showers on the 2nd and 3rd, most areas remained dry.

On the 6th, humid conditions developed as the remnants of Tropical Cyclone Gil passed north of the islands, disrupting the trades and allowing land/sea breezes. Moisture brought 0.25 to 0.50 inches of rain over windward and some leeward slopes, including up to 0.30 inches in the drought-affected Kau District of the Big Island, as well as the coast and leeward slopes of Haleakala on Maui. Trades and drier weather returned from the 7th to the 9th. On the 10th and 11th, Tropical Cyclone Henriette passed by to the north, bringing light winds, humid conditions, and only isolated showers.

Moderate to breezy trades resumed for the 12th through 24th, with lower humidity and limited windward showers. The only exceptions to this were a low-level trough on the 14th/15th and the remnants of Tropical Storm Ivo through the 18th, which both provided brief increases in clouds and showers to portions of the state.

Between the 25th and 27th, a stalled surface low north of the islands created a hybrid pattern of east-southeast trades and land/sea breezes. This produced showers along east and southeast-facing slopes of Hawaii Island, while the rest of the state stayed mostly dry. From the 28th to 31st, another trough kept winds light to moderate with leeward sea breezes. The Kona coast saw the most rain to start, with 0.25 to 1 inch on the 28th (up to 2.50 inches in spots) and 0.75 to 1 inch on the 29th. A surge of deep tropical moisture, associated with a trough passing by just south of the islands on the 30th and 31st, increased showers statewide, bringing 0.33 to 0.75 inches to windward terrain on Kauai, Oahu, Maui, and Hawaii Island (including some areas currently in severe drought), with over 1 inch in the Koolau Mountains of Oahu.

 

Tropical Cyclone Kiko: This hurricane is still in the eastern Pacific….some 1500 miles from Hawaii. The Central Pacific Hurricane Center is suggesting that Kiko will cross into our Central Pacific this weekend. The latest GFS model still has whatever is left of Kiko approaching the Hawaiian Islands, or passing just north or south towards the middle of next week.

The current status has Kiko with sustained winds of 144 mph and gusts to 173! This puts Kiko at the Category 4 level, just one category from the top. Changes in its path/intensity could occur between now and then. So, I will be keeping my eye on this hurricane going forward. You can follow along if you scroll down this page to the Tropical Cyclone section, and look for more detailed information on Kiko.

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

 

Hawaii’s Broad Brush Weather Overview:  Moderate trades will deliver limited showers windward and mountains through Friday. Trade wind showers potentially increase over the eastern end of the state this weekend, in advance of Tropical Cyclone Kiko, which is poised to approach the Islands towards the early to middle part of next week. An associated flash flood threat will be possible.

Hawaii’s Weather Details: Mid-level ridge axis extending westward from ridging anchored east of the islands maintains strongly stable conditions, particularly over the eastern end of the state. Satellite imagery provides a clear picture of the stability currently in place, with very dry mid-level air pivoting around the high and over Maui and the Big Island, while lingering cyclonic flow aloft, associated with low pressure west-northwest of Kauai, supplies modest mid- level moisture over the western end of the island chain.

The aforementioned mid-level high is displaced south in response to deep troughing advancing eastward over the northeast Pacific. This in turn has suppressed the seasonably weak trade wind belt to the south, resulting in moderate trades that will persist into early next week. Limited rainfall windward and mountains during this time, owing to high stability and a lack of upstream moisture.

The end of the forecast period will feature the passage of TC Kiko, which is presently moving quite slowly westward in the eastern Pacific Basin. The track of this cyclone will be governed by its intensity and interaction with the steering flow, the latter of which will be modulated in part by deepening mid-latitude troughing near the islands, as it approaches. A flash flood threat may develop over the islands in the Tuesday-Thursday time frame, conditional on the exact track of the system.

Fire weather:  Light to moderate trade winds will remain below the critical fire weather thresholds through at least the weekend. Dry and stable conditions will prevail, with afternoon relative humidity dropping to around 45 percent each afternoon through Saturday.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation / 8-Day Precipitation model

https://www.weather.gov/images/hfo/graphics/npac.gif 

 

Hawaii’s Marine Environment:  A weak surface ridge to the north will remain nearly stationary. This will maintain moderate to locally fresh trade winds with some localized sea breezes, especially across leeward waters.

Surf along north facing shores will gradually decline as a mix of the north and northwest swells fade through Thursday. Reinforcing small short- to medium-period north-northwest swells are expected through the end of the week, which will keep surf from going flat. In the extended forecast, the northwest Pacific looks to get active as low pressure systems traverse the basin over the weekend, sending the potential for a few small to moderate swells during the middle of next week.

Surf along south facing shores will see background medium- to long- period energy through the week, before a small to moderate long-period south-southwest swell fills in, and peaks over the weekend.

Below average surf is expected to continue along east facing shores through the rest of the week. In the extended forecast, easterly energy from Hurricane Kiko in the Eastern Pacific is expected early next week, that could potentially bring surf to near High Surf Advisory (HSA) criteria.

Peak monthly high tides, combined with water levels running higher than predicted, may lead to minor flooding along the shoreline and in low-lying coastal areas. A Coastal Flood Statement will remain active through Sunday afternoon.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean: There are no active tropical cyclone

Eastern Tropical Atlantic

 >>> Showers and thunderstorms associated with a tropical wave located over the eastern tropical Atlantic several hundred miles west-southwest of the Cabo Verde Islands remain disorganized. Environmental conditions are conducive for development of this system during the next several days, and a tropical depression is likely to form late this week or this weekend over the eastern or central tropical Atlantic while moving slowly toward the west-northwest at 5 to 10 mph. The system is likely to move faster toward the west or west-northwest thereafter and reach the waters east of the Lesser Antilles by the middle of next week.

* Formation chance through 48 hours…medium…40 percent
* Formation chance through 7 days…high…80 percent

 

Caribbean Sea:  There are no active tropical cyclone

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.

 

Northeastern Pacific:

Tropical Cyclone Kiko…is located about 1560 east of Hilo, Hawaii

KIKO STRENGTHENS SOME MORE WELL TO THE EAST-SOUTHEAST OF THE HAWAIIAN ISLANDS

According to the NHC advisory number 16

Kiko is moving toward the west near 9 mph and this general motion is expected to continue through Thursday night. A turn toward the west-northwest is expected on Friday, with a gradual increase in forward speed expected over the weekend as Kiko approaches the Hawaiian Islands from the east. Maximum sustained winds are near 145 mph with higher gusts. Kiko is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. Little change in strength is forecast through Friday, followed by gradual weakening over the weekend. Hurricane-force winds extend outward up to 25 miles from the center and tropical-storm-force winds extend outward up to 80 miles.

cone graphic

 

Tropical Cyclone 12E (Lorena)…is located about 110 southwest of Cabo San Lucas, Mexico

LORENA EXPECTED TO WEAKEN QUICKLY ON THURSDAY AND FRIDAY…RISK OF LIFE-THREATENING FLASH FLOODING CONTINUES FOR BAJA CALIFORNIA SUR AND SOUTHWESTERN SONORA

According to the NHC advisory number 9A

Lorena is moving toward the northwest near 10 mph (17 km/h), and this motion with a decrease in forward speed is expected through early Thursday. A slow northward or north-northeastward motion is expected to begin on Thursday and continue into the weekend. On the forecast track, the center of Lorena is expected to move parallel to the west coast of the Baja California peninsula through Thursday, approach the coast of Baja California Sur Thursday night, and move inland over the Baja California peninsula on Friday. Maximum sustained winds are near 85 mph (140 km/h) with higher gusts. Lorena is expected to begin weakening quickly and become a tropical storm on Thursday. Lorena is likely to degenerate into a remnant low near or over the Baja California peninsula by early Saturday. Hurricane-force winds extend outward up to 15 miles (30 km) from the center and tropical-storm-force winds extend outward up to 80 miles (130 km).

cone graphic

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

 

North Central Pacific: There are no active tropical cyclone 

The National Hurricane Center is issuing advisories on Hurricane Kiko, located in the East Pacific basin well east-southeast of the Hawaiian Islands. Kiko is expected to cross into the central Pacific basin over the weekend.

The National Hurricane Center is also issuing advisories on Tropical Storm Lorena, located in the East Pacific basin around 155 miles south of Cabo San Lucas, Mexico.

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: 

Tropical Cyclone 21W (Peipah)…is located approximately 216 NM south-southeast of Sasebo, Japan

https://www.metoc.navy.mil/jtwc/products/wp2125.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:  There are no active tropical cyclones

South Indian Ocean: There are no active tropical cyclones

Arabian Sea:  There are no active tropical cyclones

Here’s a link to the Joint Typhoon Warning Center (JTWC)

 

>>> Here’s a link to the Pacific Disaster Center’s (PDC Global) Weather Wall website

 

Interesting:  EVs Reduce Climate Pollution, but by How Much? New U-M Research Has the Answer

Drivers can now compare the greenhouse gas emissions of different vehicles based on size, usage, powertrain type and even location.

Choosing a more electrified vehicle will reduce drivers’ greenhouse gas emissions, regardless of where they live in the contiguous United States, according to a new study from the University of Michigan.

The analysis is the most comprehensive to date, the authors said, providing drivers with estimates of emissions per mile driven across 35 different combinations of vehicle class and powertrains. That included conventional gas pickups, hybrid SUVs and fully electric sedans with dozens of other permutations.

In fact, the team created a free online calculator that lets drivers estimate greenhouse gas emissions based on what they drive, how they drive and where they live.

Read More: University of Michigan