The latest update to this website was at 506pm Monday (HST)

 

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

0.54  Makaha Ridge, Kauai
0.02  Luluku, Oahu
0.00  Molokai
0.00  Lanai
0.17  West Wailuaiki, Maui
1.00  Lalamilo, Big Island

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

23  Port Allen, Kauai
27  Honolulu AP, Oahu
21  Makapulapai, Molokai
22  Lanai 1, Lanai
29  Na Kula, Maui
24  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

Thunderstorms in the deeper tropics…cold front northwest…Tropical Cyclone Sonia far east-southeast 

 

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

 Variable low clouds…along with deeper clouds in the vicinity

 

 

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…some are heavy 

 

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

 

~~~ Hawaii Weather Narrative ~~~

 

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

It’s partly to mostly cloudy here in Marin County early this morning. The low temperature was 44 degrees, although the temperature had risen to 50 before dawn.

The clouds early this morning have evaporated, leaving mostly skies early this afternoon .

Weather Wit of the day: Fall – When the days get shorter and the faces get longer

>>> Highest Temperature Monday, October 27, 2025 – 100 near El Centro, CA
>>> Lowest Temperature Monday, October 27, 2025 – 14 near Hidalgo, Texas

 

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: Moderate trade winds will continue this week. An upper level trough will help bring increased instability to the western end of the state, enhancing the chance for heavier showers into Wednesday. Possible unsettled weather this weekend.

Hawaii’s Weather Details: Water vapor imagery shows an upper trough across the western end of the state this afternoon. The trough is responsible for bringing up mid and high clouds that have been over the area this past weekend. At the surface, moderate trade winds are driven by highs far northeast and north northwest. A cold front far to the north separates the two highs.

Visible satellite and radar imagery shows a swath of mid and high clouds across Oahu and Maui County. Rain amounts have been minimal, but aside of Kauai this afternoon, mostly cloudy skies prevail. The upper trough will linger near Kauai through Wednesday before weakening and broadening across the state. A few enhanced showers are expected near Kauai through Wednesday, with a few thunderstorms possible north of this area. Models also indicate enough instability developing in the trough that has moved over the Big Island over the Big Island to warrant a mention of thunderstorms Wednesday afternoon.

A cold front will slowly approach during the second half of the week with a gradual trend down in winds. A deep low pressure system will dig southward towards the Hawaii forming a surface low north of the state. Winds will taper off as this low nears, but long range models vary on where the low sets up. For now it looks like a wet and unsettled weather this weekend with flash flood and thunderstorms possible.

Fire weather: Low-level moisture is expected to be high enough this week to keep RH values above critical levels. Trade winds will still be present, but weaker, in the coming days. Temperature inversion heights will range from 6,500 to 7,500 feet through Tuesday.

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: High pressure far northeast of the Hawaiian coastal waters will continue to weaken as a front stalls north of the area, and weakens through mid-week. A weak ridge will move into the northern offshore waters later this week, before another front approaches the area. Expect moderate to locally breezy trades through the week, with an increase in winds likely this weekend, as a front approaches the state from the northwest.

Surf along north facing shores will see a slight decline Tuesday, as a short to medium period north-northwest (330-340 degree) swell slowly fades. An incoming moderate short-period north-northwest (330-350 degree) swell will produce another rise in north shore surf Tuesday night into Wednesday.

However, the low that generated Wednesday’s swell was rather compact and fast-moving, so there remains some uncertainty regarding potential surf heights. Model guidance for north swells have trended towards a low bias, so surf heights may come in higher then predicted. A new north-northwest swell will bring near advisory level surf over the weekend, along exposed north and west facing shores.

Surf along east facing shores will remain small to moderate as the trades ease. Although, shore lines exposed to the north swell on Wednesday may see an increase in surf. South facing shores will continue to see mainly small background swells through the 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 335 miles southwest of Guantanamo, Cuba

MELISSA EXPECTED TO BRING CATASTROPHIC AND LIFE-THREATENING WINDS, FLOODING, AND STORM SURGE TO JAMAICA LATER TONIGHT AND ON TUESDAY.

cone graphic

According to the NHC advisory number 26A

Melissa is moving slowly toward the northwest near 2 mph. A slow turn toward the north is expected tonight, followed by a turn toward the northeast at a slightly faster forward speed on Tuesday. A northeastward motion with a faster forward speed is expected on Wednesday and Thursday. On the forecast track, the core of Melissa is expected to move near or over Jamaica by early Tuesday, across southeastern Cuba Tuesday night, and across the southeastern or central Bahamas on Wednesday. Maximum sustained winds are near 175 mph (280 km/h) with higher gusts. Melissa is a category 5 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some fluctuations in intensity are likely before Melissa makes landfall on Jamaica. However, Melissa is expected to reach Jamaica and southeastern Cuba as an extremely powerful major hurricane, and will still be at hurricane strength when it moves across the southeastern Bahamas. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 195 miles (315 km). The minimum central pressure estimated by aircraft dropsonde data is 909 mb (26.85 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 990 miles southwest of the southern tip of Baja CA

SONIA REMAINS A TROPICAL STORM

cone graphic

According to the NHC advisory number 14

Sonia is moving toward the west-northwest near 7 mph. A turn toward the west is expected later tonight or Tuesday, followed by a gradual increase in forward speed during the next couple of days. Maximum sustained winds are near 40 mph with higher gusts. Gradual weakening is forecast during the next couple of days, with Sonia expected to become a post-tropical remnant low on Wednesday. Tropical-storm-force winds extend outward up to 45 miles from the center. The estimated minimum central pressure is 1004 mb (29.65 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: 

Tropical Cyclone 03B (Montha)…is located approximately 572 NM south-southwest of Kolkata, India

https://www.metoc.navy.mil/jtwc/products/io0325.gif

 

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:  Scientists Identify Potential Climate Solutions in “Grassy Trees”

Bamboo, palm, and banana trees look and act like trees, but are actually closer to grasses in how they grow because—unlike trees—their stems do not grow wider over time. However, due to their towering structure, scientists struggled with how to both classify them and to fully understand their biology—and benefits.

A new analysis by New York University scientists offers a clearer picture of these organisms, labeling them “grassy trees,” which combine the canopy structure of trees with the resilience of grasses—and can more easily adapt to and recover from extreme weather conditions than can trees.

“Bamboo, palms, and bananas, which don’t fit neatly as ‘trees’ or ‘grasses,’ are actually a powerful group of plants we call ‘grassy trees’ that combine the best of both worlds,” explains Aiyu Zheng, a researcher at New York University’s Department of Environmental Studies and the lead author of the analysis, which appears in the journal Trends in Ecology and Evolution. “Their hybrid nature—combining the tall structures of trees with the rapid growth of grasses—makes grassy trees powerful allies in responding to climate change.

“They bounce back quickly after fires, storms, or harvesting—and they help restore landscapes, store carbon, support biodiversity, and sustain communities. Their benefits stretch from food and jobs to renewable materials and green energy.”

Read More: New York University