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


The latest update to this website was 633pm Sunday HST


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

0.31  Mount Waialeale, Kauai
0.89  Tunnel Rg, Oahu
0.20  Puu Alii, Molokai
0.04  Lanai 1, Lanai
0.44  West Wailuaiki, Maui
1.59  Waiaha Stream, Big Island


The following numbers represent the strongest wind gusts (mph) Sunday evening:

23  Lawai, Kauai – ENE 
29  Oahu Forest NWR, Oahu – ESE
28  Molokai AP, Molokai – NE
35  Lanai 1, Lanai – NE
36  Maalaea Bay, Maui – N 
30  Pali 2, Big Island – NE


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/20261162010-20261170400-GOES18-ABI-HI-GEOCOLOR-600x600.gif

 A band of clouds north of the islands…high clouds southwest 

 

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 Sunday 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.

720am Hawaii time, Bob and I will close up this vacation rental soon, and we’ll drive down Hwy 1, and into Sebastopol, where we’ll have lunch at Whole Foods. Then it’s over to Hwy 101 at Cotati, and south to Linda’s place in Corte Madera, California. She says she’ll have a great pasta dinner waiting for us.

We’re back at Linda’s, actually we got here around 3pm. We unpacked our stuff from the car and brought it in the house. We took a long walk before dinner, in the cloudy weather with a cool breeze. It was wonderful being on the coast for so long, although it felt pretty short actually.

 

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

 

>>> Highest Temperature Sunday, April 26, 2026 – 102 degrees at Rio Grande Village, TX
>>> Lowest Temperature Sunday, April 26, 2026 – 9 degrees at Burgess Junction, WY

 

Hawaii’s Broad Brush Weather Overview…as of Sunday evening: Trades will continue through the next week, bringing mainly windward and mountain showers. An upper level low will form just to our northeast Tuesday, and then slowly move away to the north-northeast. The main impact of this low will be a slight increase in shower coverage and strength Tuesday through Thursday. Trades will increase in speed Tuesday through next weekend.

Weather Details for the Hawaiian Islands…as of Sunday evening: Radar and satellite show clouds and showers focused on windward and mountain areas. The strongest showers were over the Kau District on the Big Island. Other more consistent showers were over windward Maui.

The upper level pattern north of the islands will carry a series of troughs west to east across the Pacific Ocean through the next week, but for the most part these will be too far north to bring significant changes to the weather at the surface here in Hawaii. The lone exception will be a small and relatively weak closed low that is expected to form just to the northeast of the state late Tuesday. This low will then slowly track ENE away from the state through next weekend.

Overall, the region will remain under the influence of ridging aloft to our WNW. This upper low will not be strong enough to prevent trades from continuing at the surface, but it will bring a little more instability aloft, and therefore we may see some stronger showers Tuesday through Friday.

Showers will remain mainly windward and mountains, and more numerous at night for most areas. Afternoon kona showers, along with showers over the peaks of the Big Island, will remain in the forecast as well. Finally, from the middle of next week into next weekend, trades will become stronger.


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 Sunday: Advisory-level winds possible in the typically windier waters surrounding Maui County and the Big Island. Winds look to strengthen more significantly by mid-week as strong high pressure rebuilds far north of the state, with increased confidence for advisory-level winds, potentially including additional coastal waters.

Surf along north-facing shores will begin to gradually ease into the first half of the week, as the offshore buoy 51001 (to the northwest) shows decreasing medium-period swell energy over the past several hours. An upward trend is expected during the second half of the week, as swell generated by a broad low near the Aleutians reaches Hawaii.

Looking farther ahead, a storm-force low developing east of Japan on Monday, looks to direct a longer-period northwest swell toward the islands for Friday and Saturday, with surf heights potentially approaching advisory levels along exposed north and west facing shores.

Surf along south-facing shores will remain somewhat inconsistent as a southwest swell peaks tonight. This will be followed by a gradual downward trend on Monday. Another small south-southwest pulse may arrive next weekend, from activity within our swell window east of New Zealand. Surf along east facing shores will remain relatively small and choppy, though a brief strengthening of the trade winds Monday could lead to a small rise in surf.

 

A family on a sandy inlet on Baby Beach


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:  Beavers Leave a Trail as They Head into the Arctic

A study has provided new evidence of beavers’ expansion into the Canadian Arctic by dating the changes they have made to the tundra landscape as they spread northwards.

Published in the journal Ecosphere, the research combines tree?ring analysis, or dendrochronology, with satellite imagery of surface water to pinpoint the spread of the North American beaver (Castor canadensis) in a remote part of Canada’s Northwest Territories.

Beavers are ecosystem engineers, capable of changing landscapes through the construction of dams, which can alter the stability of permafrost and impact the flow of water, fish populations and local livelihoods.

Read More at: Anglia Ruskin University

North American beaver (Castor canadensis) in the Northwest Territories, Canada