Glenn James
Hawaii Weather Today
Founder and maintainer for 30 years


The latest update to this website was 730pm Wednesday evening HST


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

0.67  N Wailua Ditch, Kauai 
0.02  Punaluu Stream, Oahu
0.00  Molokai
0.00  Lanai
0.05  Ulupalakua, Maui
0.24  Puho CS, Big Island


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

06  Port Allen, Kauai – SW
12  Schofield East, Oahu – NW
13  Makapulapai, Molokai – ESE
12  Lanai 1,  Lanai – NE 
14  Na Kula, Maui – ESE
18  Kealakomo, Big Island – ENE


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

Thunderstorms far south-southwest 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261052110-20261060500-GOES18-ABI-HI-GEOCOLOR-600x600.gif

Multi-level clouds moving over some parts of the state…from the 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

 

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 Wednesday comments:  I’m here in Vancouver, BC, Canada with my friend Bob, continuing on in my working vacation.

403am Hawaii time, it’s mostly clear and calm, with a very chilly 34.5 degree low temperature

937am Hawaii time, we walked to our breakfast place, Cafe Zen, and then walked along what’s called the Seaside Greenway for about 3 miles. The sun was warm when you were in it, although the wind had chilly bite to it.

317pm, We have just hung around our place this afternoon, and have begun packing for our return long drive back to Bend, Oregon early tomorrow morning. We’ll walk over to the Taco place we like and have some sort of Mexican food plate, along with a stiff drink to celebrate our last day in Vancouver.

732pm, we’re back home from having our fanciest meal of our time here in Vancouver, eating dinner at a restaurant called Odd Fish…don’t forget that the prices are 27% less in American dollars.

We leave early Thursday morning for the long drive back down to Bend, Oregon, where Bob lives.

 

>>> Highest Temperature Wednesday, April 15, 2026 – 98 degrees at Rio Grande Village, TX
>>> Lowest Temperature Wednesday, April 15, 2026 –  14 degrees at Berthoud Pass, CO

 

Hawaii’s Broad Brush Weather Overview…as of 405pm Wednesday evening:  A low pressure system lingers far north of the Hawaiian Islands, supporting light and variable winds with chances for light, brief showers into Thursday. A passing high pressure system will bring a short return to easterly trade winds, with subtle drying trends from Thursday night into Saturday. Low pressure passing just north of the state will produce light southeasterly winds Sunday into the middle of next week, with a possible increase in shower chances for at least portions of the state.

Weather Details for the Hawaiian Islands…as of 4pm Wednesday evening: Mid-and high clouds associated with the subtropical jet aloft continue to stream across the islands. At the surface, weak southeasterly flow is prevailing, which has allowed for afternoon sea breeze induced buildups of low clouds, along select leeward and interior locations as well. With that said, rainfall has been quite light and sparse, with 12 hour totals  showing largely a couple hundredths of an inch at most locations.

Light winds will linger into Thursday, maintained as low pressure north of the islands, and the trailing front north of the islands, moves northeast farther from the islands. Expect daytime sea breezes and overnight land breezes through Thursday, with building clouds and brief showers over island interiors during the afternoon hours, followed by clearing each night. High pressure passing far north of the islands from Thursday night into Saturday, will prompt moderate easterly trade winds to briefly return to the region. These moderate trades will likely be strong enough to limit sea breeze development to terrain sheltered areas of the islands.

Increasing stability and subsidence will also coincide with this period, initiating a slight drying trend. Global models continue to suggest that a low pressure system will develop north of the state by Sunday, though there remain some differences in timing and location. Winds will also veer back southerly across the islands, drawing moisture northward in the vicinity. As the previous discussions have mentioned, there will be increasing instability and shower chances possible during the second half of the weekend,  into the first of next week. While moisture availability appears to be a limiting factor at this time, upper troughing (and an eventual upper low) developing over the state, and at least some modest vertical motion during the first half of next 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

 

Marine Environmental Conditions:  Troughing to the west maintains gentle to locally moderate ESE winds through Thursday. The strongest breezes will occur through the typical windy channels surrounding Maui and the Big Island. Building high pressure then supports moderate to locally fresh trades across the waters into the weekend. A small, short-period, NW swell diminishes Thursday, and remains subdued through the weekend. A small, medium-period, south swell will boost surf along south shores through Friday then lower over the weekend. Surf along east shores remains below the seasonal average as trades remain light. However, increasing trades by week`s end should brings a slight bump to surf. Low pressure advancing south along the west coast of the US next week, sends a small, medium period NE swell toward the islands by mid-week.

 

r/pics - a rainbow over the ocean.


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:

Tropical Cyclone 04W (Sinlaku)…is located approximately 222 NM north of Navsta 

https://www.metoc.navy.mil/jtwc/products/04W_160000sair.jpg

 

>>> Southwest Pacific Ocean: There are no active tropical cyclones

>>> North and South Indian Oceans / Arabian Sea: There are no active tropical cyclones



Interesting:  Plants Growing Higher Across Himalaya as Climate Warms

Plants are growing higher up mountains across the Himalayan region, new research shows.The study – led by the University of Exeter – examined the alpine “vegetation line” (the upper limit of continuous plants) in six regions across the Himalaya, from Ladakh, India in the far west of the mountain range, to the extreme east in Bhutan.From 1999 to 2022, the vegetation line shifted upwards in all six regions – ranging from 1.42 metres per year in Khumbu (home of Mount Everest) to 6.95 metres per year in Manthang, Nepal.With the climate warming, the team highlighted reduced snow depth as a key potential explanatory driver of these changes.Read More at: University of ExeterImage: Karakoram region – a westward view from 3,900 m a.s.l. on Khosar Gang mountain, located close to our westernmost study region, Ladakh