Glenn James
Hawaii Weather Today
Creator, Author, and Administrator for 30 years

 

The latest update to this website was at 1217pm Tuesday afternoon HST


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

0.74  Mount Waialeale, Kauai
0.74  Tunnel RG, Oahu
0.00  Molokai
0.00  Lanai
0.31  West Wailuaiki, Maui
0.76  Honolii Stream, Big Island


The following numbers represent the strongest wind gusts (mph) Tuesday afternoon: 

28  Port Allen, Kauai – E
24  Kuaokala, Oahu – NE
24  Molokai AP, Molokai – NE
23  Lanai 1, Lanai – NE
31  Na Kula, Maui – SE
25  Kealakomo, Big Island – NE


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 (out of operation). 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

  Two tropical disturbances (Invests 90C and 91C) south of Hawaii 

 

https://cdn.star.nesdis.noaa.gov/GOES18/ABI/SECTOR/hi/GEOCOLOR/20261951330-20261952120-GOES18-ABI-HI-GEOCOLOR-600x600.gif

Variable low clouds…high 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

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

Localized showers 

 

https://www.weather.gov/wwamap/png/hfo.png

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




~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Tuesday comments:  I’m at home here in upper Kula, Maui, Hawaii

447am, it’s mostly clear with a few high cirrus clouds here in upper Kula with calm winds, and a low temperature at my place of 51.5 degrees…with the relative humidity 80%

1005am, a beautiful sunny day here on Maui, a great day to celebrate my birthday.

1223pm, quickly drove down to Mana Foods in Paia for my weekly shopping trip this morning. It was an easy trip, as I didn’t have any slow drivers ahead of me, going down or coming back up the mountain. The clouds have increased a bit, mostly just around the mountains at mid-day.

 

>>> Highest Temperature Monday, July 13, 2026 – 110 at Stovepipe Wells, CA
>>> Lowest Temperature Tuesday, July 14, 2026 – 37 degrees at Stub Creek, CO

 

Interesting Web Blog: Mauka Showers…Hawaii’s 2026 Dry Season – A Midpoint Update

 

Hawaii’s Weather Highlights…as of Tuesday afternoon:  Locally breezy trade winds will weaken to moderate levels today and Wednesday, then strengthen Thursday into the weekend. Showers will continue to favor windward and mountain areas, with showers more common today and Wednesday, compared to later in the week or this coming weekend.

Short Term Update: Clouds and showers are still favoring Kauai and Oahu, as a batch of moisture rides in on the trades. Looking upstream, this activity will likely continue for the next couple of hours. Drier air will continue to move across the eastern half of the state through the early afternoon, but some clusters of clouds and showers seen upstream on satellite imagery, will likely move into the windward areas of the Big Island and Maui by sometime this late afternoon or evening.

Weather Commentary…as of Tuesday afternoon: Radar and satellite imagery show showers and clouds increasing, as an area of moisture moves into the state. Winds continue to decrease in speed, and this trend is expected to continue through Wednesday. A large surface high to the north will help keep trade winds blowing for the coming week, but wind speeds will decrease today through Wednesday before increasing again Thursday and remaining moderate into the weekend.

Showers will increase today locally, tonight, and Wednesday, before drier air moves in and reduces showers from Thursday onward. As is typical for trade winds, the majority of showers will be occurring along the windward and mountain areas.

Models have been consistently showing an increase in potential tropical systems in the central and eastern Pacific in the next couple of weeks, but so far no storms appear headed toward the state. However, with El Nino picking up steam and now forecast to reach record or near-record strength, now would be a good time to make sure you are prepared in case that changes.

https://www.weather.gov/images/hfo/graphics/npac.gif


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 / Vog Map

 

Marine Conditions…as of Tuesday afternoon: Trade winds will gradually ease today as the high pressure system north of the islands lifts northeast and weakens. The Small Craft Advisory (SCA) has been cancelled as winds have dropped below criteria. These lighter trades should continue through Wednesday night, then may increase a bit Thursday and Friday, as high pressure northeast of the islands drops a bit further south and tightens up the local pressure gradient.

The current small, long-period southwest swell will gradually decline through the middle of the week. A series of overlapping small south and southwest swell should produce some rideable surf through the weekend, with perhaps a more sizable south swell moving in early next week.

Surf along east-facing shores will steadily decline through Wednesday. Surf will then hold steady at slightly below seasonal averages along east facing shores through the weekend.

A series of small, long to medium period, west to west-northwest swells generated by former Super Typhoon Bavi will be possible throughout the rest of the week. Otherwise, no significant north or northwest swells are expected, so surf along north-facing shores is expected to remain flat to tiny.

Peak monthly high tides combined with water levels that are running slightly higher than predicted, will lead to minor flooding along the shoreline and in low-lying coastal areas. Coastal flooding is possible around the daily peak tide, which will be during the afternoon hours.

 

How to Travel to Hawaii Without Leaving Home | The Discoverer


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

Tropical cyclone formation is not expected during the next 7 days.

>>> Caribbean Sea: There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7 days.

>>> Gulf of America: There are no active tropical cyclones

Tropical cyclone formation is not expected during the next 7 days.

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

 

Northeast Pacific: There are no active tropical cyclones

>>> Offshore of Southwestern Mexico:

Invest 96E

Showers and thunderstorms continue to become better organized and are producing gusty winds in association with an area of low pressure located a few hundred miles south-southwest of the coast of southwestern Mexico. The circulation is also becoming better defined. If current trends continue, a tropical depression or tropical storm is expected to form later today while the system moves generally west-northwestward, staying well offshore of the coast of Mexico.

* Formation chance through 48 hours…high…100 percent
* Formation chance through 7 days…high…100 percent 

 

>>> Offshore of Southern and Southwestern Mexico:

An area of low pressure is expected to form later this week several hundred miles south of the coast of southern Mexico. Environmental conditions appear conducive for gradual development of this system thereafter, and a tropical depression is likely to form by the end of the weekend while it moves generally west-northwestward well offshore of Mexico.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…high…70 percent

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

 

Central Pacific: There are no active tropical cyclone

>>> Well South of the Hawaiian Islands:

Invest 91C

Shower and thunderstorm activity has decreased in association with a broad area of low pressure located several hundred miles south of the Hawaiian Islands. Earlier satellite wind data showed that the system lacks a well-defined surface circulation. A tropical depression could still form over the next day or two while the system moves little. The disturbance is expected to move into less favorable environmental conditions later this week, likely ending its chances of development.

* Formation chance through 48 hours…medium…40 percent
* Formation chance through 7 days…medium…40 percent

 

>>> Well Southwest of the Hawaiian Islands:

Invest 90C

A trough of low pressure located several hundred miles to the southwest of the Hawaiian Islands continues to produce an area of disorganized showers and thunderstorms. Environmental conditions appear favorable for gradual development, and the system could become a tropical depression later in the week while it moves slowly northwestward, remaining well southwest of the Hawaiian Islands.

* Formation chance through 48 hours…low…30 percent
* Formation chance through 7 days…medium…50 percent

 

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

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

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

Here’s the link to the Joint Typhoon Warning Center (JTWC)



Interesting:  Novel Marine Monitoring Network Could Help Improve Environmental Protections, Shipping Regulations in the Lower St. Lawrence

A single monitoring network developed by McGill, Natural Resources Canada, Université du Québec à Montréal (UQAM) and Dalhousie University researchers can simultaneously track earthquakes, water behavior, human activity and whales, providing a comprehensive picture of what’s happening in, under, and at far distances from the water.

The researchers’ experimental network, installed in the Lower St. Lawrence, detected twice as many earthquakes as the National Earthquake Monitoring System, while also capturing whale calls, ship noise, tidal activity and mining blasts.

The system combines tools known as “ocean bottom seismometers” from the National Facility for Seismological Investigations with coastal and land-based stations to monitor activity across the estuary.

Read More: McGill University