Glenn James
Hawaii Weather Today
Founder and maintainer for 30 years 

 

The latest update to this website was at 520am Tuesday (HST)

 

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

1.57  Mount Waialeale , Kauai
0.21  Manoa Lyon Aboretum, Oahu
0.54  Puu Alii, Molokai
0.00  Lanai
0.45  West Wailuaiki, Maui
0.66  Laupahoehoe, Big Island

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

33  Lihue, Kauai – NNW
29  Oahu Forest NWR, Oahu – ENE
28  Molokai AP, Molokai – NE
32  Lanai 1,  Lanai – NE
33  Kealaloloa Rg, Maui – NE
37  Puuloa, Big Island – NE

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

The high clouds have finally cleared the state…a cold front far northwest

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20260900640-20260901430-GOES18-ABI-HI-GEOCOLOR-600x600.gif

Low clouds arriving along the windward sides / higher level clouds moving away from the state to the southeast and east

 

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 the current Watches, Warnings and Advisories noted above

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Tuesday comments:  I’m here in Corte Madera, Marin County, California on a working vacation.

523am Hawaii time, I’m here at my friend Linda’s house. It’s cloudy, cool and breezy with a few light sprinkles, with a 57 degree low. BTW, when I say Hawaii time, it is 3-hours later here in California.

 

>>> Highest Temperature Monday, March 30, 2026 – 101 degrees near Cibola, AZ
>>> Lowest Temperature Tuesday, March 31, 2026 – 7 degrees at Saint Mary, MT

 

Hawaii’s Broad Brush Weather Overview…as of 316am Tuesday: Moderate to locally breezy trades will prevail through today, decreasing slightly by tomorrow, before easing to a more light and variable pattern by this weekend. Shower activity will be kept to a minimum as a cooler and drier airmass filters in over the Hawaiian Islands. A cold, upper-level trough makes an appearance late in the week, and may slightly enhance trade wind showers, but any meaningful rainfall still remains unlikely.

Weather Details for the Hawaiian Islands…as of 316am Tuesday: An upper-level trough remains just northeast of the Hawaiian Islands, continuing to slowly shift northeast, while a broad 1032 millibar surface high building in its wake from the northwest. These features will be the catalyst driving moderate to locally breezy trades statewide through much of today.

Guidance suggests today will be the windiest day of the week, though most locations will remain just below Wind Advisory thresholds. However, it cannot be ruled out that some of the more usual wind- prone locations could occasionally edge near the criteria.

Shower activity will also focus low clouds and showers across windward and mountain areas, but rainfall will be sparse. Latest model guidance continues to show precipitable water values two to three standard deviations below average. This is largely due to a drier airmass filtering in over the entire state.

Some guidance preserves the slight increase in thunderstorm potential of up to 15 percent over the southern slopes of the Big Island. However, with moisture levels running exceptionally low, any storms that do form would likely be “dry” thunderstorms, producing lightning with little to no rainfall. Given that the atmosphere may still be too dry, confidence of storm development remains low.

Looking ahead, trades will begin to ease by tomorrow, as the aforementioned high pressure will begin to weaken, becoming light and variable by this weekend, and persisting that way through the remainder of the forecast period.

Right around the same time, a weak upper-level trough is anticipated to pass within the vicinity of the islands. Moisture will remain limited though, and any meaningful increase in rainfall still appears unlikely at this time.

 

Here’s a near real-time Wind Profile of the Pacific Ocean – Zoom Earth – 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…as of 316am Tuesday: Fresh to strong NNE trades through tonight, easing during the second half of the week, as a trough develops east of the state, and high pressure shifts east. Another trough will develop north of the state towards the end of the week, which will further weaken trades. The Small Craft Advisory has been extended through Wednesday due to winds.

A moderate short period NNE (020 degree) swell generated by a gale low NE of the state, will hold through tonight. While surf has not reached High Surf advisory criteria, the MWS for harbor surges remains in effect given little change in surf conditions anticipated.

Surf along east facing shores will remain choppy due to the strong trade winds, with some areas also being exposed to the incoming NNE swell. South shores will continue to see small pulses from the southern hemisphere over the next few days. A storm-force low developing southeast of New Zealand over the next few days could send a moderate south-southwest swell the following week.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclones

Gulf of America:  There are no active tropical cyclones

 

Northeastern Pacific:  There are no active tropical cyclones

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

North 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 Indian Ocean:  There are no active tropical cyclones

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:  New Study Highlights Success in Open-Coast Seagrass Restoration

New research led by scientists at UC San Diego’s Scripps Institution of Oceanography is shining a spotlight on one of the ocean’s most overlooked habitats: seagrass.

Led by Scripps Oceanography PhD candidate Rilee Sanders and supported by The Bay Foundation, Paua Marine Research Group, USC Wrigley Institute for Environment and Sustainability and Pacific Marine and Estuarine Fish Habitat Partnership, the study documented the first successful restoration of open-coast seagrass (common eelgrass). The findings offer promising insight into the feasibility of restoring high-value coastal habitats in the future.

Seagrasses act as ecosystem engineers, creating complex underwater habitats that support life along the coast. Around the world, these habitats are increasingly threatened by climate change and human impacts like coastal development, invasive species and overfishing.

Read more at: University of California San Diego

Juvenile señorita (Oxyjulis californica) utilize the protective canopy of the open-coast seagrass restoration site at Button Shell, Catalina Island.

 

592 Responses to “Hawaiian Islands Weather Details & Aloha Paragraphs / March 31 – April 1, 2026”

  • March 30th, 2026 at 3:22 pm
    Paul Says:

    Love your site, Glenn, it usually is the most accurate I can find. Today I particularly loved the photo of Waikiki on to the Waianae Mountains. I live on Moku o Keawe now but grew up on Oahu where we lived for many years in the Waianae mountains. I can pick out the ridge where we lived in the photo. Incidentally as a very young guy I had a barometer and used that with visual data from the clouds to predict the weather and did pretty good — but not as good as you do. Thanks so much. Aloha.

    >>> Hi Paul, well, your comment made my day! Thanks my friend, I had a barometer as a young kid and a thermometer too, as I got swept away by weather, everything about it…and remain totally into it to this day!

    Aloha, Glenn

  • March 26th, 2026 at 10:35 am
    Christiane Santoro Says:

    It’s been raining since last evening in Pukalani and we got well over an inch of rain. I don’t understand why nothing of this showed or is showing on the radar images.

    >>> Hi Christiane, good to hear from you there in Pukalani. Hmmm, perhaps the area of rain was too limited to show up on radar? I see from here at my place in Kula, what looks like you’re getting showers this morning in Pukalani, and like you point out, I don’t see radar showing that. I’m sorry that I don’t have a better answer for you. I know the Molokai radar has been out lately, and apparently will be fixed today, although I doubt that that is the reason you/we aren’t seeing the showers on radar at the moment.

    Aloha, Glenn

  • March 25th, 2026 at 2:48 pm
    Jerry Says:

    Hi Glenn,
    I seem to remember a satellite photo of three hurricanes lined upon a row east of Hawaii a number of years ago. Perhaps this was in 2015? Fortunately they all veered away thanks to the Big Island. Here’s hoping we don’t see that again this year!

    >>> Hi Jerry, you are correct, that situation was in 2015, and here’s a picture of those three hurricanes:

    https://cdn.defenseone.com/media/img/cd/2024/04/08/GettyImages_486169932/860×394.jpg?1712632135

    I’m with you, I certainly don’t want a repeat of the summer of 2015!

    Aloha, Glenn

  • March 25th, 2026 at 10:55 am
    Jill Painter Says:

    What a block buster day of news on your website this morning. The potential of a super El Niño year and scientific breakthroughs in the creation of materials that can pull moisture out of the air. Thank you for helping to lead us into the future. So appreciate all your Weather work. Mahalo Glenn.

    >>> Hi Jill, always good to hear from you! Indeed, a couple of very interesting situations, one is not great, and the other could be very good. Of course anything that is forecast to occur in the future is up for alterations and potential changes.

    Thanks for your appreciation of my weather work Jill, you’re always so kind!

    Aloha, Glenn

  • March 22nd, 2026 at 3:14 am
    John Henry Melancon Says:

    Glenn, It is 11pm Hawaii time Saturday night and, on satellite/radar, I have been watching showers training over West Maui for hours, some of them intense. With 8 inches having already fallen at Pu’u Kukui as of 9am Saturday morning I can only guess what the totals might be by now. I worry how this may be affecting the burned area above Lahaina, and hope that folks in the path of potential floodwaters have evacuated. The damage in Kihei was bad but this storm is relentless. Praying for Maui.

    >>> Hi John, I’m sure that your prayers are welcomed by all the folks here in Hawaii, and particularly Maui County at the moment, that has been slammed by this onslaught of rain the last week! This weather event is unprecedented to say the least! It looks like we’ll finally get some improved weather this coming week, although the clean up efforts will take a very long time!

    Thanks for sharing your thoughts John

    Aloha, Glenn

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