The latest update to this website was at 922am Sunday (HST)

 

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

0.57  N Wailua Ditch, Kauai
0.88  Schofield East, Oahu
0.32  Puu Alii, Molokai
0.01  Lanai AP, Lanai
1.13  West Wailuaiki, Maui
0.90  Papaikou Well, Big Island

The following numbers represent the strongest wind gusts (mph) as of Sunday morning:

18  Puu Lua, Kauai
27  Palehua, Oahu
23  Makapulapai, Molokai
28  Lanai 1, Lanai
32  Kealaloloa Rg, Maui
29  Hokuloa, 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 northwest 

 

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

 Mostly low clouds, along with some developing cumulus cloud over the offshore waters

 

 

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 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 52.5 degrees…with a relative humidity of 80%.

Weather Wit of the day: Winter – The freezin’ season

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

>>> Highest Temperature Saturday, October 18, 2025 – 100 near La Puerta, Texas
>>> Lowest Temperature Sunday, October 19, 2025 – 18 near Grand Lake, Colorado

 

Hawaii’s Broad Brush Weather Overview: High pressure will maintain moderate to locally breezy trades, then gradually ease through Wednesday. Shower activity will be focused predominately across windward and mountain areas, though a brief shower or two may pass over leeward areas. Only exception would be the Kona slopes of the Big Island, where heavier showers and a brief thunderstorm remains possible during the afternoon and early evening hours. Trades are expected to strengthen on Thursday and Friday.

Hawaii’s Weather Details: Broad, building high pressure well north of the Hawaiian Islands will help maintain moderate to locally breezy trades, under slightly unstable conditions throughout the day. Trades begin to ease shortly thereafter through mid-week, as the aforementioned high meanders eastward.

Instability associated with a passing upper-level low and associated trough, propagating southward along the east side of the islands, maintaining just enough instability to combine within the wet trade flow regime, to bring heavier shower activity to windward areas. While current models are not projecting any particularly organized areas of moisture, there is indication of some pockets of likely enhanced shower activity favoring windward areas of Maui and Big Island early in the week.

Elsewhere, including leeward areas on all islands, may experience a brief passing shower or two, but will ultimately miss out otherwise. The only exception would be the Kona slopes on the Big Island, where spotty shower activity may develop in the afternoon and evening hours. A passing thunderstorm in the vicinity cannot be ruled out either.

Toward the latter end of the week, latest model guidance remains in relatively good agreement, portraying trades strengthening as early as Thursday and Friday, with robust mid-level ridging increasing stability across the state. Shower activity associated with these trades will be less intense and limited to predominately windward and mountain areas for all islands.

Fire weather:  Moderate to locally breezy trades will prevail under slightly unstable conditions, that will produce some enhanced moisture and increase humidity levels keeping fire weather conditions below critical levels. Trades are expected to gradually ease through Wednesday, and strengthen thereafter for the remainder of the week. Temperature inversion heights near Maui and the Big Island will range from the 5,500 to 6,500 feet 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: Moderate to locally strong trades will gradually weaken across the Hawaiian coastal waters, as a surface high shifts further northeast. Moderate to locally fresh trades will develop tonight into Monday and persist through mid-week as the surface high lingers far northeast of the state and another high develops far northwest. A Small Craft Advisory (SCA) remains in effect over the windier waters and channels surrounding Maui County and the Big Island. The SCA may need to be extended if the trade winds speeds continue to hold within locally strong range a little longer than expected.

Surf along north and west facing shores will continue to slowly trend down as two moderate, long-period northwest and north-northwest swells fade. A series of small to moderate, long period northwest to north-northwest swells (320-340 degrees) will fill in throughout the week, keeping surf elevated. The first of these swells (320-330 degree) is expected to fill in tonight, before peaking Monday, producing above average surf. A slightly smaller size swell (330-340 degree) will peak late Tuesday before fading Wednesday. A larger, moderate, long period swell (330-340 degree) could produce advisory level surf for north and west facing shores late Wednesday into Thursday.

Background, medium- to long-period south to southwest swells will continue to filter into the area through the upcoming week, keeping surf along south facing shores from going flat. Rough, choppy surf along east facing shores will persist before dropping a notch Monday, as trades trend down slightly through mid-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:  There are no active tropical cyclone

Near the Windward Islands and the Caribbean Sea

Invest 98L

>>> Recent satellite wind data and surface observations indicate the tropical wave currently crossing the Windward Islands still lacks a closed circulation. However both radar and satellite images indicate the associated shower and thunderstorm activity is starting to show signs of organization. The system is still moving quickly westward at 20 to 25 mph, which could limit development over the next day or so, but environmental conditions are forecast to become more favorable as it slows down in the central Caribbean Sea by the middle of this week. A tropical depression is likely to form by the middle to latter portion of this week in the central Caribbean Sea. Regardless of development, heavy rainfall and gusty winds are expected to continue for portions of the Windward and Leeward Islands through Monday morning.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…high…70 percent

 

Gulf of America:  There are no active tropical cyclone

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

 

Northeastern Pacific:  There are no active tropical cyclone

Central East Pacific:

>>> A surface trough located a couple hundred miles offshore of Central America is producing disorganized showers and thunderstorms. Environmental conditions appear conducive for slow development of this system, and a tropical depression could form by the latter portion of this week as it moves generally westward at 10 to 15 mph.

* Formation chance through 48 hours…low…10 percent 
* Formation chance through 7 days…medium…40 percent 

 

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: 

Tropical Cyclone 30W (Fengshen) is located approximately 156 NM northwest of Manila, Philippines

https://www.metoc.navy.mil/jtwc/products/wp3025.gif

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 227 NM west-southwest of Diego Garcia

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:  World Reaches a Climate ‘Tipping Point,’ Imperiling Coral Reefs

Scientists say that warming has breached a critical threshold for tropical coral reefs, which are expected to see catastrophic losses in the years ahead. They warn that if warming continues unchecked, the world will cross other climate “tipping points,” destabilizing ice sheets, disrupting ocean currents, and causing irreversible damage to the Amazon rain forest.

The Earth has warmed by at least 1.3 degrees C since the pre-industrial era, surpassing the point at which warming is expected to inflict widespread damage on reefs in warm, shallow, sunlit waters. The loss of reefs would have ramifications for the hundreds of millions of people worldwide who depend on them for food or income, according to a landmark new report authored by 160 scientists in 23 countries. The report says that countries must work to preserve any surviving reefs by protecting them from pollution and over fishing.

The world already risks the collapse of the massive West Antarctic Ice Sheet, according to the report. And if warming breaches 1.5 degrees C, the stated goal of the Paris Agreement, humanity may also face a mass die back of the Amazon rain forest and the collapse of a vital Atlantic current.

Read more at: Yale Environment 360