The latest update to this website was at 9pm Friday (HST)

 

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

87 – 74  Lihue AP, Kauai
89 – 72  Molokai AP, Molokai
91 – 71  Kahului AP, Maui – Record high Friday – 93 in 2019
87 – 75  Kona AP, Big Island
87 – 70  Hilo, AP, Big Island

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

0.44  Mount Waialeale, Kauai
0.29  Waihee Pump, Oahu
0.06  Puu Alii, Molokai
0.00  Lanai
0.14  Hana AP, Maui
0.14  Waiaha Stream, 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 Friday evening:

23  Port Allen, Kauai
33  Oahu Forest NWR, Oahu
27  Makapulapai, Molokai
27  Lanai 1, Lanai
31  Na Kula, Maui
29  Kawaihae Rd, 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/13/1800x1080.jpg

A few thunderstorms far south and northwest

 

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

Low clouds in our vicinity…along with high level clouds 

 

https://radar.weather.gov/ridge/standard/HAWAII_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 Aloha Friday comments:  I’m home here in upper Kula, Maui, Hawaii.

It’s mostly clear here in Maui County early this morning.  The low temperature at my place was 53 degrees.

Weather Wit of the day:  Humidity – What heat uses for an Alibi

1205pm, I went up the mountain to skateboard, and got four good runs in, although had to pull over several times, due to the cars going up and down the mountain. Nonetheless, it’s always nice to be up on the slopes of the Haleakala Crater…and I didn’t fall!

204pm, there’s a brush fire near West Kuiaha and the Hana Highway (here on Maui) as of 135pm, and the winds are very gusty in that area!

>>> Highest Temperature Friday, August 15, 2025 – 111 at Stovepipe, California
>>> Lowest Temperature Friday, August 15, 2025 – 31 near Bynum, Montanta

 

Hawaii’s Broad Brush Weather Overview:  High pressure building over the region will maintain moderate to locally breezy trades through early Sunday. A low-level trough associated with the remnants of former Tropical Cyclone Ivo will move into the vicinity of the Hawaiian Islands on Sunday, bringing an increase in clouds and showers over mainly windward and mountain areas through Monday. Dry and stable conditions return on Tuesday and continue through the week.

Hawaii’s Weather Details: Satellite imagery shows a low-level trough northwest of Kauai departing the region towards the west. This has allowed moderate to locally breezy trades to return to the islands, as a surface ridge builds to the north. Drier air is filtering into the eastern half of the state, as a pocket of moisture moves across the western islands. This will result in a bit more clouds and showers over Kauai County and Oahu, compared to the rest of the state. Otherwise, expect typical summertime trade wind weather to continue into Saturday, with limited clouds and showers moving into windward and mountain areas.

Guidance continues to show another low-level trough associated with the remnants of former Tropical Cyclone Ivo moving near the state on Sunday and Monday. As the trough moves into the vicinity of the islands expect humidity levels to steadily increase. Inversion heights will also lift to around 8,000 to 9.000 feet on Sunday and Monday, which will help to enhance clouds and showers in a moderate to breezy trade wind weather pattern.

However, confidence on the track of this trough remains low as remnant tropical systems tend to be smaller in size, and can oscillate off the current track as time passes. If the system tracks further north than currently depicted there will be fewer clouds and showers across the islands, but any shift towards the south could result in a day or two of wet trades across some or all of the islands. Will continue to update the forecast as hi-res model data becomes available.

The trough looks to exit the region towards the west by Tuesday, with high pressure quickly rebuilding across the area. This will result in dry and stable conditions returning to the state under moderate to breezy trades. Expect a return to typical summertime conditions on Tuesday, with limited clouds and showers over mainly windward and mountain areas.

Fire weather:  Weather conditions should remain below critical fire weather thresholds into early next week. A low-level trough north of the islands will continue to propagate westward, with another low-level disturbance associated with the remnants of former Tropical Cyclone Ivo in its wake. Expect increased humidity levels and shower activity Sunday through Monday. Thereafter, lower humidity levels and more stable conditions will return Tuesday, as high pressure rebuilds over the islands, persisting through the remainder of the week.

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:  Winds will be on the increase, and Small Craft Advisory (SCA) level winds could trickle into these coastal waters by the end of the day.

A surface trough north of the islands will continue to trek to the west over the next couple of days. In its wake, surface ridging will allow trade winds to gradually strengthen through the weekend, leading to the SCA conditions mentioned above.

Surf along south facing shores will see a slight bump and likely another small bump Saturday, as a series of small long period southerly swells arrive. Surf is expected to hold through early next week.

A small, medium period northeast swell will keep surf along east facing shores elevated through the weekend. As this swell declines, the short period energy will fill in as trade winds increase into the weekend. North facing shores will remain flat to tiny through the forecast period, except for areas that may be exposed to the small northeast swell.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  

Tropical Cyclone Erin…is 195 east-northeast of Anguilla

ERIN FORECAST TO BECOME A MAJOR HURRICANE LATER IN THE WEEKEND…OUTER RAINBANDS BEGINNING TO AFFECT THE NORTHERN LEEWARD ISLANDS

According to the NHC advisory number 19A

Erin is moving toward the west-northwest near 17 mph. This motion is expected to continue through the weekend with a gradual decrease in forward speed. On the forecast track, the center of Erin is expected to move just north of the northern Leeward Islands, the Virgin Islands, and Puerto Rico over the weekend. Maximum sustained winds are near 100 mph with higher gusts. Rapid strengthening is expected over the next 24 to 36 hours, and Erin is forecast to become a major hurricane later in the weekend. Hurricane-force winds extend outward up to 30 miles from the center and tropical-storm-force winds extend outward up to 125 miles.

cone graphic

 

Northwestern Atlantic

>>> A broad and weak area of low pressure located off the coast of North Carolina is producing disorganized shower activity. Some slight development of this system is possible over the next day or two while it moves little over the warm waters of the Gulf Stream. By Monday, environmental conditions are expected to become unfavorable for further development.

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

 

 

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

 

Northeastern Pacific

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

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

 

North Central Pacific: 

Tropical cyclone formation is not expected over 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 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

 

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