Glenn James
Hawaii Weather Today
Founder and maintainer for 30 years


The latest update to this website was 540am Wednesday morning HST


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

0.33  Moloaa Dairy, Kauai 
2.97  Mililani, Oahu
0.01  Kamalo, Molokai
0.00  Lanai
0.07  Ulupalakua, Maui
1.04  Keahuolu, Big Island


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

09  Puu Opae, Kauai – E
14  Palehua, Oahu – NE
15  Makapulapai, Molokai – ESE
15  Lanai 1,  Lanai – SE 
14  Hanaula, Maui – NE 
20  South Point, Big Island – ESE  


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 southwest 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261050540-20261051330-GOES18-ABI-HI-GEOCOLOR-600x600.gif

Multi-level clouds moving over the state from the southwest

 

https://radar.weather.gov/ridge/standard/HAWAII_loop.gif

https://radar.weather.gov/ridge/standard/PHKI_loop.gif

Showers mostly around Kauai

 

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

 

>>> Highest Temperature Tuesday, April 14, 2026 – 97 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 307am Wednesday morning:  A low pressure system lingers far north of the Hawaiian Islands, producing light and variable winds with chances for showers into Thursday. A passing high pressure system will bring a short return to easterly trade winds, with subtle drying trends Thursday night into Saturday. A series of low pressure systems passing just north of the state, will produce light southeasterly winds Sunday into the middle of next week.

Weather Details for the Hawaiian Islands…as of 307am Wednesday morning: Satellite imagery shows a low pressure system far north of the Hawaiian Islands, along with high and middle clouds drifting across the state, associated with divergence under a subtropical jet stream in the upper levels of the atmosphere. These cloudy skies will linger into early next week, with chances for light to moderate showers each day.

The low pressure system currently north of the islands will keep lighter large scale winds in the forecast into Thursday. This means local scale island day time heating will drive onshore sea breezes into all islands, building clouds and brief shower trends over island mountains and interior sections, peaking during the afternoon hours.

A passing high pressure system north of the state Thursday night into Saturday, will briefly build in easterly trade winds across the region. Wind speeds will become strong enough to limit sea breezes to terrain sheltered leeward western slopes of each island. Subtle drying trends will develop during this time, due to a slight increase in subsidence, downward vertical motions creating warming and drying effects, making the atmosphere a bit more stable.

However, the return to easterly trade winds will be fleeting and vanish quickly by Sunday, as a series of low pressure systems develop and slowly track north of the state. These passing lows appear to track far enough north to limit any heavy rainfall or flooding issues for the islands. A weak ridge will settle in over the islands producing a stable southeasterly wind across the region.

Any enhanced showers in this wind driven pattern will favor southeast slopes of Maui and the Big Island, with modest additional rainfall amounts. Elsewhere rainfall will be limited as the passing cloud bands will move more parallel to island mountains, and the Big Island will produce a leeward side rain shadow across much of  Maui County.


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:  Weak troughing west of the state will help to maintain gentle to locally moderate southeast flow 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 Friday into the weekend.

A small, short-period, NW swell will continue to diminish into Thursday and remain subdued through the weekend. A small, medium-period, south swell will help 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 bring a slight rise to surf.

 

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 71 NM northwest of Saipan

https://www.metoc.navy.mil/jtwc/products/04W_150600sair.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 Exeter

Image: Karakoram region – a westward view from 3,900 m a.s.l. on Khosar Gang mountain, located close to our westernmost study region, Ladakh