The latest update to this website was at 6am Sunday (HST)

 

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

0.15  Kalaheo, Kauai
0.07  Oahu Forest NWR, Oahu
0.00  Molokai
0.02  Lanai AP, Lanai
0.21  Hana AP, Maui
0.87  Piihonua, 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 Sunday morning:

08  Port Allen, Kauai
12  Oahu Forest NWR, Oahu
06  Makaena, Molokai
07  Lanai 1, Lanai
12  Auwahi, Maui
12  Puu Mali, 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

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 Tropical Cyclone Kiko gradually weakening to the east 

 

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

Low clouds locally…with developed cumulus clouds to the north

 

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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 Sunday 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…with a relative humidity of 83%.

Weather Wit of the day:  Taxi Driver – A person to whom a rainy day is always fare weather

>>> Highest Temperature Saturday, September 6, 2025 – 110 at Death Valley, California
>>> Lowest Temperature Sunday, September 7, 2025 – 28 near Hazen, North Dakota

 

Tropical Cyclone Kiko: This hurricane is in our central Pacific….some 700 miles east of Hawaii.  The most recent status had Kiko with sustained winds of 115 mph…putting Kiko at the Category 3 level.

Hurricane Kiko is moving west-northwest at around 15 mph. Kiko is forecast to continue to weaken as it approaches the Hawaiian Islands from the southeast. Kiko is currently forecast to be a hurricane when it reaches our far northeast offshore waters late Monday, weakening to a tropical storm as it travels over our northern offshore waters Tuesday night.

A dry slot of air leading the cyclone will pass across the state Monday and briefly lower early day rain chances. Then rain chances will steadily increase from the east from late Monday through Wednesday or Thursday.

Light trades will gradually back more northerly as Kiko passes off to the north through the middle of the week. Kiko is introducing a very high precipitable water air mass of around 2 inches to the area; near maximum values by early September standards.

Forecast confidence suggests that island weather during Kiko’s passage will transition to cloudier and more humid, under very benign winds and occasional showers. The greatest rainfall will likely fall along more eastern and northern mountains slopes  or within higher terrain. This very moist air mass moving across the islands as Kiko passes to the north, combined with weaker steering flow over the island chain, may lead to periods of heavy rain along small scale breeze boundaries.

Kiko’s main impacts still remain marine-based and focused on potentially high east-facing shore surf. While Kiko is anticipated to arrive in the far offshore waters Tuesday, there is enough inherent error in track and intensity to understand that tropical storm force conditions are possible (non-zero chances) across the far windward nearshore waters of Big Island and Maui County. Thus, interests in Hawaii and the surrounding waters should closely monitor Kiko’s progression toward the state these next couple of days.

You can follow along with the latest information if you scroll down this page to the Tropical Cyclone section, and look for more detailed information on Kiko.

cone graphic

 

Hawaii’s Broad Brush Weather Overview:  A brief enhancement in shower activity through Monday morning is in response to both troughing north of the state, and higher moisture passing across the islands from the east. Overall, the region will remain relatively dry and stable the next couple of days. Cloudier, warm and muggy island weather is forecast Tuesday and Wednesday under weakened trade flow.

Hurricane Kiko is approaching Hawaii from the southeast. Kiko’s current forecast track remains north of the islands across the far northern offshore waters. While confidence is low concerning Kiko’s early to mid-week impacts, there is a possibility of higher statewide rainfall and elevated east-facing shore surf.

Hawaii’s Weather Details: The current weather pattern has a weak upper ridge just south of the islands. There’s also an associated trough draped across the far northwest offshore waters, along with Hurricane Kiko located about 700 miles east Hilo, Hawaii, that have disrupted the pressure gradient from a surface high centered far north-northeast of Big Island. The result will be lighter trade winds within an increasingly humid island environment. Light background trade flow will open the door for more wind-sheltered locales to experience local diurnal breezes.

A surge of deeper, more moist air embedded within light upstream trades as noted on satellite imagery, in tandem with the weak instability of the trough in proximity of the northwest waters, is providing enough juice and lift, respectively, to generate more area-wide shower activity through early Monday. Higher rain amounts will be confined to north and east-facing exposures and at higher elevations.

Fire weather:  Winds will remain well below critical fire weather thresholds the next few days. While humidity levels will steadily be on the rise, there will be brief periods of low early afternoon humidities within lower elevation, leeward interiors the next couple of days. Drier air will filter in across the state Monday and maintain low humidity, but winds will remain below critical fire weather thresholds. Showers may increase in coverage and intensity over many windward exposures beginning late Monday through the middle of the week, as a result of the approach and passage of Tropical Cyclone Kiko well north of the state.

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 trough will linger north of the state, resulting in gentle to moderate trade winds with localized land and sea breezes. As the trough drifts westward Monday, more moderate trade winds could make a brief return.

Attention then turns to Hurricane Kiko, which was located east-southeast of Hilo. Hurricane Kiko continues to track west- northwest in the Central Pacific, and according to the latest forecast from the National Hurricane Center, is expected to enter our offshore waters Monday night as a hurricane. Kiko will then continue to move northwest through the offshore waters as it weakens to tropical storm status.

The last few advisories from NHC have consistently kept Kiko just far enough away to keep the mention of possible tropical storm conditions out of the coastal waters forecast. With that said, swell generated by Kiko will begin arriving today, peaking at or near High Surf Warning levels along east-facing shores Monday night and Tuesday.

Surf along east facing shores will steadily rise late today through the next couple of days as swell energy from Tropical Cyclone Kiko arrives. The surf may approach High Surf Advisory Criteria as early as Monday and possibly reach low end High Surf Warning levels Monday night into Tuesday during its peak. Surf heights will be highly dependent on the track and intensity of Kiko as it nears the state.

A moderate long period south-southwest swell will peak today, helping to build surf above the summer average. As this swell declines on Monday, another reinforcing swell out of the south-southwest is expected on Tuesday. This should help maintain surf near or slightly above the summer average throughout the first half of the week. Additionally, multiple small pules of northwest swell energy will generate small surf along north facing beaches through the week.

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.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean: There are no active tropical cyclone

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

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:

Central East Pacific:

>>> An area of low pressure associated with a tropical wave located a few hundred miles southwest of the southwestern coast of Mexico is producing scattered showers and thunderstorms. Environmental conditions are expected to become increasingly unfavorable during the next couple of days, and further development of this system is not anticipated while it moves generally westward at around 10 to 15 mph over the open waters of the eastern Pacific.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…near 0 percent

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

 

North Central Pacific:  

Tropical Cyclone Kiko…is located about 715 east of Hilo, Hawaii

KIKO GRADUALLY WEAKENING OVER COOL WATERS…EXPECTED TO PASS NORTH OF THE HAWAIIAN ISLANDS ON TUESDAY AND WEDNESDAY

According to the NHC advisory number 30

Kiko is moving toward the west-northwest near 13 mph, and this general motion is expected to continue through early Wednesday. On the forecast track, the center of Kiko is expected to pass north of the Hawaiian Islands on Tuesday and Wednesday. Maximum sustained winds have decreased to near 115 mph with higher gusts. Kiko is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Additional weakening is forecast during the next few days, and Kiko is expected to become a tropical storm on Tuesday. Hurricane-force winds extend outward up to 35 miles from the center and tropical-storm-force winds extend outward up to 80 miles.

cone graphic

Here’s the link to the Central Pacific Hurricane Center (CPHC)

 

Northwest Pacific Ocean: 

Tropical Cyclone 22W (Tapah)…is located approximately 142 NM south-southwest of Hong Kong

https://www.metoc.navy.mil/jtwc/products/wp2225.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:  What Climate Change Means for the Mediterranean Sea

Climate change threatens marine and coastal ecosystems in the Mediterranean region. Warming, sea level rise, and ocean acidification are occuring there more intensely and rapidly than the global average. A recent study led by GEOMAR Helmholtz Centre for Ocean Research Kiel investigated how strongly marine and coastal ecosystems in the Mediterranean Sea are already at risk, even under comparatively moderate additional warming. For this purpose, 131 scientific studies were evaluated in a thorough meta-analysis. The results have now been published in the journal Scientific Reports.

Temperatures in the Mediterranean are currently rising to record levels. Instead of a refreshing dip, holidaymakers in places like Greece, Italy, and Spain, among other places, are now facing water temperatures up to 28°C or even higher. With an average water temperature of 26.9°C, July 2025 was the warmest since records began for the Mediterranean Sea, according to the Copernicus Earth Observation Service.

Warming caused by climate change is considered – alongside stressors such as overfishing, pollution, and habitat destruction – a major factor threatening marine and coastal habitats. “The consequences of warming are not only projections for the future, but very real damages we are witnessing now. The continuing rise in temperatures, sea level and ocean acidification cause severe risks for the environment in and around the Mediterranean Sea,” says Dr. Abed El Rahman Hassoun, Biogeochemical Oceanographer at the Helmholtz Centre for Ocean Research Kiel.

Read more at: Helmholtz Centre for Ocean Research Kiel (GEOMAR)