Glenn James
Hawaii Weather Today
Creator, Author, and Administrator for 30 years                                                     


The latest update to this website was 433am Saturday HST


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

0.16  Mount Waialeale, Kauai
0.25  Kaala, Oahu
0.47  Puu Alii, Molokai
0.00  Lanai
0.85  West Wailuaiki, Maui
1.19  Spencer, Big Island


The following numbers represent the strongest wind gusts (mph) Saturday morning:

16  Port Allen, Kauai – ENE 
30  Kuaokala, Oahu – NE
27  Anapuka, Molokai – NW
27  Lanai 1, Lanai – NE
32  Kealaloloa Rg, Maui – NNE
29  Kealakomo, Big Island – NNE


Hawaii’s Mountains – Here’s a link to the live webcam on the summit of our tallest mountain Mauna Kea (~13,800 feet high) on the Big Island of Hawaii. Here’s the webcam for the (~10,023 feet high) Haleakala Crater 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

Cold front far northwest…thunderstorms far south 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261150530-20261151320-GOES18-ABI-HI-GEOCOLOR-600x600.gif

 Mostly lower level clouds across the island chain 

 

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 

 

https://www.weather.gov/wwamap/png/hfo.png

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




~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Saturday comments:  I’m here in a wonderful vacation rental at The Sea Ranch, Sonoma County, California with my friend Bob, continuing on in my working vacation.

 

>>> Mauka Showers, an interesting weather web blog…Hawaii’s Wet Season, Part 3 (Final) – Overall Trends

 

>>> Highest Temperature Friday, April 24, 2026 – 101 degrees at Rio Grande Village, TX
>>> Lowest Temperature Saturday, April 25, 2026 – minus 14 degrees at Peter Sinks, UT

 

Hawaii’s Broad Brush Weather Overview…as of Saturday morning: Trades will continue through the next several days, gradually increasing in speed by mid-week next week, maintaining typical windward and mountain showers.

A weak upper-level disturbance approaches the islands early next week, resulting in a possible increase in moisture across windward slopes. This will be short-lived, however, and steady trades will return again for the remainder of the forecast period.

Weather Details for the Hawaiian Islands…as of Saturday morning: Latest radar imagery continues to display isolated windward showers riding on a prolonged trade wind pattern, under a high pressure system anchored to the north of the Hawaiian Islands.

Moderate to locally breezy trades will veer slightly from the northeast to a more easterly pattern, gradually increasing in speed by mid-week, and then persisting through the remainder of the forecast period.

This will help maintain typical trade showers across windward and mountain areas, though any precipitation associated with these showers is expected to remain light.

Model guidance preserves the likeliness of a weak upper-level disturbance shifting over the islands as early as Monday, effectively increasing the moisture content across the windward slopes of most islands. This increase in moisture may lead to some stronger showers, due to instability from colder air aloft.

Model precipitable water levels show an increase from near normal, to 1 to 2 standard deviations above normal from Monday to Wednesday, falling back to near normal. Trades will re-establish shortly thereafter, prevailing 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 / Here’s the latest Weather Map / Looping Surface Precipitation…through the next 8-days / Vog Map

 

Marine Environmental Conditions…as of Saturday: A ridge of high pressure far north of the state will maintain moderate to breezy trade winds through today. A slight decrease is expected tonight into early next week as a weak trough passes through the state. The trough should bring an increase of shower coverage especially over windward waters. High pressure will rebuild far north of the state towards the middle of next week, which should bring the return of moderate to locally strong trades.

A small medium period NW swell continues to fill in this morning and will be reinforced by a larger NW swell filling in tonight. This reinforcing NW swell should peak on Sunday, then gradually decline through early next week. A developing hurricane-force low this weekend near the Aleutian Islands should send a moderate northwest swell towards the middle of next week.

Local nearshore buoys such as the Mokapu buoy is showing a modest increase of short-period energy from the NE this morning associated with a small fetch of strong winds few hundred miles NE of the state the past few days. This should provide a short-lived increase along east facing shores through this morning then gradually decline into Sunday. Otherwise, below average surf is expected along eastern exposures into next week due to the lack of any strong trade wind activity over and upstream of the state. Locally strong trade winds could return during the second half of next week, which could bring rough and choppy surf with near normal wave heights by the later half of next week.

Small background energy from the west will continue to linger through today and fade out on Sunday. A small southwest bump from the Tasman Sea that passed across the American Samoa 51209 buoy Wednesday is expected to slowly fill in today and peak on Sunday. No significant south swell is expected through the first half of next week. A fetch of gales passing east of New Zealand today could produce a small south-southwest swell for next weekend.

 

A baby playing in the water at Baby Beach in Lahaina, Maui.


World-wide Tropical Cyclone Activity


>>> Here’s a link to the latest Pacific Disaster Center’s Weather Wall


>>> Atlantic Ocean: There are no active tropical cyclones

>>> Caribbean Sea: There are no active tropical cyclones

>>> Gulf of Mexico: There are no active tropical cyclones

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

 

>>> Eastern Pacific: There are no active tropical cyclones

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

>>> Central Pacific: There are no active tropical cyclones

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 Oceans / Arabian Sea: There are no active tropical cyclones



Interesting:  Fires, Droughts, and Windstorms Reduce the Diversity of Amazonian Vegetation

Even after fires, severe droughts, and windstorms, the vegetation in degraded Amazonian forests demonstrates a high capacity for regeneration, including tree species. However, recovery occurs under new ecological conditions, resulting in a loss of diversity and increased vulnerability to new disturbances.

On April 20, research was published in the Proceedings of the National Academy of Sciences (PNAS), one of the world’s most cited scientific journals, showing that vulnerable species are being replaced by more resilient, generalist species. According to the authors, this indicates the formation of homogeneous forests but not a trend toward savannization, as some previous studies had suggested. This process reinforces the resilience of the biome.

However, the study, which was based on 20 years of field monitoring and was led by Brazilian researchers, highlights that the recovered areas are vulnerable to increasingly frequent extreme events in the biome, as well as to the impacts of deforestation and climate change. In addition to intensifying droughts and fires, global warming impairs ecosystem services such as water regulation and carbon sequestration.

Read More at: Fundacao de Amparo a Pesquisa do Estado de São Paulo

The research was based on 20 years of field monitoring