The latest update to this website was at 505pm Saturday (HST)

 

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

0.78  Mount Waialeale, Kauai
0.27  Kamananui Stream, Oahu
0.07  Puu Alii, Molokai
0.00  Lanai
1.30  West Wailuaiki, Maui
2.03  Kulaimano, Big Island

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

32  Port Allen, Kauai
42  Oahu Forest NWR, Oahu
42  Molokai AP, Molokai
31  Lanai 1, Lanai
38  Honoapiilani, Maui
27  Pali 2, 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

Thunderstorms in the deeper tropics…cold front far northwest 

 

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

 Variably cloudy…along with deeper clouds moving into the state from the south

 

 

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

Showers locally 

 

Please open this link to see details on any current Watches, Warnings and Advisories noted above

 

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Saturday comments:  I’m here at my friend’s house in Corte Madera, Marin County, California

It’s cloudy with light showers here in Marin County early this morning. The low temperature was 48 degrees, although the temperature has risen to 57.3 before dawn.

Mid-afternoon here in Marin County and it’s still cloudy, although the rain has stopped several hours ago.

It rained off and on through the afternoon into the early evening here in Corte Madera.

Weather Wit of the day: Fall Blizzard – When you go out and rake your snow

Interesting Blog: Mauka Showers – Flash Floods in Hawaii – NWS Short Lead Time Products

>>> Highest Temperature Saturday, October 25, 2025 – 98 near Hidalgo, Texas
>>> Lowest Temperature Saturday, October 25, 2025 – 12 near Davis, WV

 

2025 Dry Season Rainfall Summary for Hawaii (May through September 2025)

> The dry season forecast favored above normal precipitation across Kauai and Oahu, below normal precipitation for the Big Island, and equal chances of above, below, and near normal precipitation across Maui County.
> Rainfall totals for the season were mostly below average for Maui County and the Big Island (except the Kona district, which has a typical summer rainfall maximum), near to below average for Oahu, and near to slightly above average for Kauai.
> Drought conditions (D1 or greater) changed little in terms of areal coverage through the dry season, with around 70% of the state affected. Drought severity increased most significantly over the Hamakua and Kau districts of the Big Island, as well as the windward and leeward coasts of Oahu.
> Overall, the 2025 season ranked as the 3rd driest in the last 30 years (average rankings from 8 representative sites around the state)
> 2010 was the driest in the last 30 years, with 2007 coming in 2nd.

 

Wet Season (October 2025 through April 2026) Outlook

> From NOAA’s Climate Prediction Center (CPC): La Niña Advisory in effect. La Niña conditions emerged in September 2025 and are expected to continue through the January – February 2026 period, with a transition to ENSO neutral likely in the January – March 2026 period (55% chance). Probabilities favor a weak La Niña event (Niño-3.4 index value at or between -0.5°C and -0.9°C).
> Rainfall forecast: Consistent with a cold-season La Niña event, the climate model consensus supports enhanced probabilities for above normal rainfall through early spring 2026, with the greatest probabilities over the northwestern half of the state.
> Rainfall amount and distribution can be influenced by the strength of La Niña
> Weaker La Niña events have generally favored above normal rainfall during winter in Hawaii in recent decades (since 1980s), with the potential for more weather systems capable of producing widespread significant rainfall.
> However, weak La Niña events do not necessarily result in Hawaii’s wettest wet seasons on record.
> Moderate to strong events have favored below normal rainfall in general, with greater trade wind frequency, focusing rain on windward slopes.

 

Hawaii’s Broad Brush Weather Overview:Trades will continue for the coming week, but with weaker winds than we have had the past couple days. Two upper-level lows will be close enough to bring enough instability for isolated thunderstorms, mainly over western areas, through Wednesday. Low-level humidity will increase, ending our recent enhanced fire threat.

Hawaii’s Weather Details: Isolated showers continue over the area, mostly on the windward side of the Big Island and over Kauai. Other showers were seen over the coastal waters, mainly between the Big Island and Maui. A large area of showers, embedded within an even larger area of high clouds, was moving north toward the Big Island and may reach eastern Maui County tonight. A Winter Weather Advisory continues through 6am Saturday for the Big Island Summits.

A closed upper level low centered to our southwest will drift northwest through Monday afternoon, before weakening to a trough. This trough will then move slowly east over the state, and then become nearly stationary, through Tuesday. This trough will have cold air aloft, resulting in enough instability for a slight chance of thunderstorms. The best chance will be over the western part of the state. Models are in fairly good agreement that the trough will evolve back into a low much farther off to the southwest late Wednesday, and drift west for several days. Another low is expected to form to our east late next week.

At the surface, a series of high pressure centers to our north will move from west to east, keeping us in trade winds. Moisture below the inversion will be high, but is forecast to decrease to more normal levels the remainder of the week. Therefore, rather typical windward showers are to be expected, with a few making it over to the leeward side with light rain amounts.

Fire weather:  Enhanced shower activity associated with a passing upper-level low, meandering across the Big Island, has resulted in an increase of humidity, suppressing the Red Flag Warning for much of the state. The Red Flag Warning continues for Niihau, and leeward areas of Kauai and Oahu, and was canceled for all islands in Maui County and Big Island due to increased humidity.

Trade winds across the state remain breezy, however, will gradually trend lower tonight to a more light to moderate speeds. Increased humidity values and decreasing winds will help maintain below critical fire weather thresholds for the rest of the weekend and into next week. Temperature inversion heights near Maui and the Big Island will range from 6,500 to 7,500 feet elevation for the time being.

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: Large surface high pressure north of the state maintaining a tight pressure gradient over the islands is resulting in fresh to locally strong trade winds. A Small Craft Advisory (SCA) remains in effect for all coastal waters to account for these winds and for elevated seas. As the high drifts eastward this weekend, fresh trades will drop off to more water-wide moderate magnitudes.

SCA-level winds will hold through Sunday in Maui County`s channels and bays as well as south of Big Island. Winds will significantly lower to gentle to moderate speeds from late Sunday through Monday, as a cold front impinges on the high as it moves into the eastern Pacific. Moderate winds through the middle of the week may strengthen back to more fresh speeds over western waters as a cold front approaches the northwestern offshore waters.

A reinforcing north-northwest (330 degree) swell, similar in size to the swell that peaked Thursday morning, will be passing around the islands. This swell will provide a slight boost to north and west-facing shore surf, but heights will remain under advisory criteria during its morning peak. This swell will fall from this evening through early Monday. A quick hitting moderate size, short period north (360-010 degree) swell Wednesday, originating from post-frontal strong breezes over the far north offshore waters, will hold head high north-facing shore surf.

Fresh to strong trades has kept short period easterly wind wave chop alive along most east-facing exposures. Moderate to fresh easterly fetch over and just upstream of the islands, in tandem with some northwest swell wrap, will hold elevated sub-advisory eastern shore surf. Despite some northerly swell wrap on Wednesday, weakening trades will allow rough surf to subside to more seasonable heights next week.

 



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: 

Tropical Cyclone Melissa…is located about 250 miles west-southwest of Port Au Prince, Haiti

MELISSA LIKELY STARTING TO RAPIDLY INTENSIFY AND EXPECTED TO BECOME A MAJOR HURRICANE TOMORROW …LIFE-THREATENING AND CATASTROPHIC FLASH FLOODING AND LANDSLIDES EXPECTED IN PORTIONS OF SOUTHERN HISPANIOLA AND JAMAICA INTO EARLY NEXT WEEK

cone graphic

According to the NHC advisory number 18

Melissa is moving toward slowly the west near 3 mph. A slow westward motion is expected tonight through the end of the weekend. A turn to the north and northeast is forecast on Monday and Tuesday. On the forecast track, the center of Melissa is expected to move near or over Jamaica during the weekend and early next week, and it could be near or over eastern Cuba by the middle of next week. Maximum sustained winds have increased to near 90 mph with higher gusts. Rapid intensification is forecast to continue over the next day or so and Melissa is forecast to become a major hurricane tomorrow and is expected to still be a major hurricane when making landfall in Jamaica early next week. Hurricane-force winds extend outward up to 15 miles from the center and tropical-storm-force winds extend outward up to 160 miles. The estimated minimum central pressure is 974 mb (28.77 inches).

 

Gulf of America:  There are no active tropical cyclone

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

 

Northeastern Pacific: 

Tropical Cyclone 18E (Sonia)…is located about 875 miles southwest of the southern tip of Baja CA

SONIA CONTINUES STRENGTHENING AS IT MOVES WESTWARD FAR FROM LAND

According to the NHC advisory number 5

Sonia is moving toward the west near 8 mph. The tropical storm is forecast to continue moving westward today. A slower forward motion with a turn toward the west-northwest or northwest is expected on Sunday. Maximum sustained winds are near 50 mph with higher gusts. Some strengthening is possible this weekend and Sonia could approach hurricane strength on Sunday. Gradual weakening is expected by early next week. Tropical-storm-force winds extend outward up to 45 miles from the center. The estimated minimum central pressure is 1001 mb (29.56 inches).

 

North 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 Ocean:  There are no active tropical cyclones

South Indian Ocean:

Tropical Cyclone 04S (Chenge) is located approximately 635 NM east of Dar Es Salaam, Tanzania – Final Warning

https://www.metoc.navy.mil/jtwc/products/sh0426.gif

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:  Researchers Tackle Growing Threat of ‘Forever Chemicals’

A new project led by the UK Centre for Ecology & Hydrology will transform our understanding of a group of manufactured chemicals that can last hundreds of years in the environment, posing long-term risks to ecosystems and potentially human health. This will result in improved assessments of what happens to these so-called ‘forever chemicals’ in habitats, including their impacts on wildlife.

PFAS (per- and polyfluoroalkyl substances) are a group of thousands of chemically diverse, man made compounds that are used in common products ranging from non-stick cookware and firefighting foam to cosmetics and food packaging. Their resistance to environmental breakdown means they can accumulate in air, water, soils and living organisms.

This new UKRI-funded project will look at a wider range of PFAS compounds than has been previously investigated in the UK, to tackle critical knowledge gaps. UKCEH will be partnering with Lancaster University, the University of Birmingham and the British Geological Survey on the project, in collaboration with the Environment Agency.

Read More at: UK Centre for Ecology & Hydrology

Firefighting foam is one of the many common products that contain PFAS.