Glenn James
Hawaii Weather Today
Founder and maintainer for 30 years 

 

The latest update to this website was at 510pm Tuesday (HST)

 

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

0.19  Kilohana, Kauai
1.09  Lyon, Oahu
4.41  Puu Alii, Molokai
0.21   Lanai City, Lanai
7.54  West Wailuaiki, Maui
4.26  Laupahoehoe, Big Island

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

32  Port Allen, Kauai – NE
39  Kuaokala, Oahu – N
32  Molokai AP, Molokai – NNE
42  Lanai 1,  Lanai – NE
38  Kealaloloa Rg, Maui – NE
43  Kona AP, Big Island – NNE

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.

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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

Clearing skies..as the recent Kona low pressure system moves away towards the northeast 

 

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

Low clouds arriving along the windward sides…on the gusty trade winds / middle level clouds moving by south of the state

 

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 heavy on the Big Island 

 

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 at home in upper Kula, Maui

535am Monday morning, with cloudy skies and rain here at my place, with the low temperature 54.5 degrees, along with the relative humidity 82%.

840am, here in upper Kula the rain keeps coming down, and over on the windward sides it’s even wetter! We are having beautiful rainbows this morning too!

1215pm, the windward sides of Maui are cloudy and wet, with the clouds and drizzle being carried over into the leeward areas locally on the gusty trade winds.

202pm, the clouds and mist continue to be blown over here to my place in upper Kula…it’s quite pleasant.

4pm, the greatest change between the weather this morning and this afternoon, is that it’s gotten very gusty here in upper Kula.

 

>>> Highest Temperature Monday, March 23, 2026 – 102 degrees near Tecopa, CA
>>> Lowest Temperature Tuesday, March 24, 2026 – minus 3 degrees near Millinocket, ME

 

Hawaii’s Broad Brush Weather Overview…as of 355pm Tuesday:  Lingering moisture, combined with a departing upper trough, will support periods of locally heavy showers and storms through tonight over the Big Island. Otherwise, trades have returned, and a drier and more stable trade wind pattern is expected through the weekend into early next week. Showers, mainly windward, will be with us through the week.

Weather Details for the islands…as of 355pm Tuesday:  An exiting upper level trough still has cold air aloft, and will keep conditions unstable over the Big Island through tonight. Earlier today, this lead to an extension of the flood watch there through 6am Wednesday. Windward and high elevation showers have been occurring since late morning, and will continue and strengthen going into tonight. Therefore flash floods are still possible and folks should be prepared the rest of today and tonight.

For the remaining islands, trades have already built back into the area, thanks to a surface high to our north. NE winds averaging 10 to 20 mph with gusts above 30 mph at times, were transporting drier air into the region. Windward showers, typical for trade winds, will be with us through the weekend and into next week.

An upper low will swing by to the northeast of the state, and push a fairly dry cold front through Thursday night through Saturday night, bringing even drier air to the state. At this time, the forecast is for dew points in the mid 50’s Saturday night, with upper 50’s both Friday and Sunday nights. Looks like a cool weekend in store.

 

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 355pm Tuesday:  A trough east of the islands will be the focal point for a new weak low to develop tonight. This, combined with high pressure far north of the area, will result in strengthening northeasterly winds across the local nearshore waters tonight. A Small Craft Advisory remains in effect for all coastal waters through Wednesday morning due to these increasing northeasterlies. Winds begin to ease on Wednesday, but favored channels and coastal waters around the Big Island will maintain Small Craft Advisory conditions at least through Wednesday evening. Winds gradually diminish through the rest of the week as the weak low lifts northward away from the islands and the high pressure shifts toward the mainland. A new high pressure develops far northwest of Hawaii late this week, but strengthens and dips south this weekend, leading to trade winds likely strengthening back to small craft criteria into the beginning of next week.

A fading north-northwest swell will be overlapped by a reinforcing pulse of short to medium period north-northeast swell which will peak tonight and then decline Wednesday. The forerunners of another small northwest swell will arrive on Wednesday, with the medium period swell building to a peak on Thursday, before gradually declining through the weekend. For east facing shores, short period energy from rebuilding trades will increase to near seasonal averages tonight and then hold into the weekend. Strengthening northeasterly winds this weekend and potential gales associated with a low around one thousand miles northeast of the islands will lead to the potential for high surf along north and east facing shores by Sunday into early next week.

For south facing shores, small pulses of southerly swell continue to be possible through the rest of the week, which will keep small surf ongoing along south facing shores.

 

Oahu's Top 20+ Beaches To Visit & Experience | Oahu Hawaii | Hawaii Guide



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

North Central Pacific: There are no active tropical cyclones

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

 

Northwest Pacific Ocean: There are no active tropical cyclones

 

Southwest Pacific Ocean: 

Tropical Cyclone 27P (Narelle)…is located approximately 67 NM northwest of Broome, Australia

https://www.metoc.navy.mil/jtwc/products/27P_241800sair.jpg

 

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:  Climate Change May Complicate Avalanche Risk Across the Pacific Northwest

This winter was one of the warmest on record across the West; as a result, many snowy, alpine areas have seen bouts of winter rainfall where there would ordinarily only be snow. These unusual weather patterns have contributed to an abysmal ski season, but they can also set the stage for dangerous avalanches. At temperatures close to freezing, precipitation can fall as rain but freeze when it hits the snow, forming an icy crust. Snow that accumulates on top of that crust is unstable and prone to abrupt slides, causing an avalanche that can close down a major highway in moments, endanger backcountry skiers and more.

Avalanche experts in Western Washington know how to manage the risks associated with rain-on-snow events, but many of their counterparts in colder regions like Eastern Washington, Idaho and Montana are less familiar with these dynamics. New research from the University of Washington shows that as winters in these regions warm, their snowpacks may come to resemble those of maritime areas, with more rain-on-snow events, icy crusts and complex avalanche forecasting.

The findings were published in ARC Geophysical Research.

Read More: University of Washington