Glenn James
Hawaii Weather Today
Founder and maintainer for 30 years 

 

The latest update to this website was at 522pm Wednesday (HST)

 

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

0.63  Mount Waialeale, Kauai
0.12  Kaala, Oahu
0.51  Puu Alii, Molokai
0.00  Lanai
0.37  Kula Ag, Maui
1.29  Laupahoehoe, Big Island

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

28  Port Allen, Kauai – ENE
37  Oahu Forest NWR, Oahu – E
28  Molokai AP, Molokai – NE
37  Lanai 1,  Lanai – NE
39  Kealaloloa Rg, Maui – NE
36  Lalamilo, 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 moving by to the south…a cold front northwest

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20260911840-20260920230-GOES18-ABI-HI-GEOCOLOR-600x600.gif

A few low clouds arriving along the windward sides / higher level clouds moving by to the south

 

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…very few 

 

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

~~~ Hawaii Weather Narrative ~~~

 

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

5am Hawaii time, I’m here at my friend Linda’s house. It’s cloudy, with a 55 degree low. BTW, when I say Hawaii time, it is 3-hours later here in California.

505am, I just got word that heavy snow was falling all the way from the summit of the Haleakala Crater…down to sea level in Kihei and Wailea, Maui.

922am Hawaii time, there are reports that folks are skiing down from Ulupalakua to Makena…while there are ice skaters doing there thing on the nearby frozen ocean!

525pm Hawaii time, here in Marin County, just north of San Francisco, it’s breezy, cloudy, with light rain and 58 degrees.

 

>>> Highest Temperature Wednesday, April 1, 2026 – 104 degrees at Rio Grande Village, TX
>>> Lowest Temperature Wednesday, April 1, 2026 – 2 degrees near Forest Center, MN

 

Hawaii’s Broad Brush Weather Overview…as of 355pm Wednesday: Partly cloudy skies with lower humidity under breezy trades will continue the next several days. Limited shower activity will be confined to primarily windward zones and mauka slopes. Long range model guidance are coming more in line with the evolution of a deepening trough northwest of the state mid next week. This trough will pull up a more mositure-rich southern air mass and likely be the impetus to higher statewide precipitation.

Weather Details for the Hawaiian Islands…as of 355pm Wednesday: Another pleasant day here in the islands with mostly sunny skies along many coastal areas and surrounding nearshore waters, as cumulus build ups along warmed mountain slopes. The western half of the state, and their waters, have the trades fading a touch. Moderate to fresh winds across such trade exposed areas as Kaena Point in northwest Oahu, Kalaupapa on Molokai and Big Island`s North Kohala district, are a clue that winds have stayed up through the island channels, especially around Maui County and Big Island.

Afternoon near coastal observations and high resolution modeling are maintaining these amped up channel winds through Thursday, strongest over Maalaea Bay and the Pailolo and Alenuihaha Channels, where winds should remain at Small Craft Advisory criteria. Overall trades will fade a bit Friday and this weekend, as the pressure gradient relaxes in response to weak surface high moving onto the U.S. west coast. Upper ridging nosing in from the west will guarantee a few more of these pleasant days for the majority of the Aloha State.

Partially cloudy skies and continued dry conditions will be the rule. Afternoons will warm into the average middle to upper 70’s along and near the coast, into the 60’s above 2-3,00 feet. Tonight`s full moon will clearly be seen in frequent lunar peeks between the passing low level clouds. Evening breezy coastal trades over windward areas while land breezes take hold within wind-sheltered interiors, allowing temperatures to cool back into the middle 60’s to low 70’s.

Local atmospheric soundings depict a moistened lower 6-7,000 foot boundary layer, capped by bone dry mid to upper layer air. This resident stable, dry air mass will guarantee any short-lived precipitation will be very light. Quick passing light showers will primarily focus along eastern-facing upslope mountain slopes and within higher elevations, with the occasional offshore shower passing across windward coastal areas.

The next significant weather producer for Hawaii will be in the form of a deepening trough west-northwest of the islands early next week. Ridging passing north of the state this weekend will leave a wake, for which a trough will begin to take shape next Monday. There will be a couple of disturbances that will travel into this trough, further deepening it as its axis nears the northwest offshore waters by late Wednesday into Thursday. The development of this trough will veer our regional winds more south of east.

Higher humidity over more southern latitudes will be drawn northward and over the state through mid to late week. There should be just enough instability and lift to initiate statewide rainfall Wednesday and Thursday. At this time a week out, the main hazard is forecast to be locally heavy rain that, if it occurs, could result in flooding. In placing this next weather event in perspective is the GFS model `worse case scenario` (90th percentile probability) of Wednesday through Friday`s average storm total QPF (Quantity of Precipitation Forecast) is between 2 to 4 inches. The big question mark going into next week will be on the timing and intensity of this mid to late week rain.

 

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 359m Wednesday: High pressure north of Hawaii will shift eastward and weaken over the next couple of days, causing trade winds to diminish. A Small Craft Advisory is in effect for the typically windier waters around Maui County and the Big Island through Thursday night.

Moderate north and east-facing shore surf continues to be generated by a short period northeast (040 degree) swell, which will gradually diminish Thursday. Breezy winds will also bring rough conditions to east facing shores through Thursday, but will decline through the rest of the week.

The next small, medium-period northwest (310 degree) swell will arrive this weekend, bringing a small bump in surf for north and west facing shores. Along south facing shores, expect small reinforcements to sustain small surf through the 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

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

 

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: 

Tropical Cyclone 29S…is located approximately 268 NM south-southeast of Diego Garcia

https://www.metoc.navy.mil/jtwc/products/29S_020000sair.jpg

 

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:  B.C.’s Burn Scars into the Next Wildfire

After a wildfire, the flames may fade, but the danger does not. A new study by UBC researchers reveals that burned landscapes remain vulnerable for years, with large areas still bare and at risk of invasion by fast-growing, fire-prone grasses.

The research, one of the largest vegetation trajectory studies in the world, monitored landscapes two years after major wildfires in interior B.C. While some native plants returned, recovery was slower and more fragile than expected.

One of the most pressing concerns is invasive grasses, which germinate early in spring, dry out during the hottest months, and act as dry runways that spread flames at highway speed—a dynamic that contributed to the 2023 Lahaina fire in Maui and is increasingly likely in B.C.’s Interior.

Read More: University of British Columbia