The latest update to this website was at 910am Saturday (HST)

 

Here are the highest temperatures Friday…and the lowest Saturday morning:

84 – 76  Lihue AP, Kauai
82 – 73  Molokai AP, Molokai
86 – 73  Kahului AP, Maui
84 – 74  Kona AP, Big Island
85 – 70  Hilo, AP, Big Island

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

0.37  Mount Waialeale, Kauai
0.48  Schofield East, Oahu
0.35  Puu Alii, Molokai
0.00  Lanai
0.51  West Wailuaiki, Maui
0.54  Kawainui Stream, Big Island

>>> There are lots of new locations that measure rainfall and winds now, here’s a map of all areas for your reference (the map is clickable to zoom in closer)

The following numbers represent the strongest wind gusts (mph) as of Saturday morning:

17  Port Allen, Kauai
31  Oahu Forest NWR, Oahu
27  Makapulapai, Molokai
31  Lanai 1, Lanai
45  Na Kula, Maui
35  South Point, Big Island

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/GOES17/ABI/SECTOR/tpw/13/GOES17-TPW-13-900x540.gif 

 Thunderstorms far south in the deeper tropics 


https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/GEOCOLOR/GOES17-HI-GEOCOLOR-600x600.gif

Low clouds being carried our way on the trade winds

 

https://cdn.star.nesdis.noaa.gov/GOES17/ABI/SECTOR/hi/13/GOES17-HI-13-600x600.gif

High and middle level clouds arriving from the southwest locally

 

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

Localized showers 

 

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

Kauai and Oahu (Satellite)

 

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

Kauai and Oahu (Radar)

 

https://www.weather.gov/images/hfo/satellite/Oahu-Maui_VIS_loop.gif

Oahu and Maui County (Satellite)

 

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

Oahu and Maui County (Radar)

 

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

 Maui, Kahoolawe, Lanai, and the Big Island (Satellite)

 

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

Maui County and the Big Island (Radar)

 

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

Big Island (Radar)

 

Model showing precipitation through 8-days (you can slow this animation down)

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

~~~ Hawaii Weather Narrative ~~~

 

Glenn’s Saturday comments:  I’m home here in upper Kula, Maui, Hawaii.

It’s clear to partly cloudy here in Maui County this morning….with some cloudy areas.  The low temperature at my place was 55 degrees.

Weather Wit of the day:  Light Fog – Humidity that is barely mist

>>> Highest Temperature Friday, July 4, 2025 – 113 at Stovepipe Wells, California
>>> Lowest Temperature Saturday, July 5, 2025 – 31 near Kirk, Oregon

 

Hawaii’s Broad Brush Weather Overview:  Stable and breezy trade winds will continue through Wednesday, as a strong high pressure ridge anchors in place north of the state. Brief passing showers will favor windward and mountain slopes, and late afternoon to evening showers along the Kona slopes of the Big Island, other leeward areas will be mostly dry.

Hawaii’s Weather Details: Weather conditions are fairly similar to what we saw 24 hours ago. Stable low clouds are riding the breezy easterly trade winds, and producing a few showers over windward island mountains. An upper level ridge will produce a fairly stable subsidence across the Hawaii Islands, with temperature inversion heights ranging from the 5,500 to 6,500 foot elevation range, limiting shower coverage across the state. A subtropical jet stream northwest of the islands will continue to produce some high level ice crystal cirrus clouds, mainly over the western half of the state. These high level clouds may enhance sunrise and sunset colors.

In the big picture, a strong high pressure ridge will remain locked in place north of the Hawaiian Islands through much of next week, resulting in a fairly stable and breezy typical summer time trade wind weather pattern. One wrinkle in the forecast is a weak upper level trough, drifting over the islands later tonight. This weak trough may lift subsidence inversion heights enough for a subtle increase in local island shower activity later tonight through early Sunday morning.

Otherwise the ridge builds back in rather quickly with a return to dry and breezy summer time weather through much of next week. In the long range outlook, models are suggesting a slight increase in low level moisture and possibly a modest increase in shower activity from Wednesday night onward.

Fire weather: Breezy, gusty, and rather dry conditions will continue into early next week. Minimum relative humidity at lower leeward elevations will likely fall at or below 45 percent each afternoon. Temperature inversion heights will drop as low as 5,000 feet. This will result in near critical fire weather conditions over dry leeward areas at times.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation

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

 

Hawaii’s Marine Environment:  Moderate trade winds will strengthen to area-wide fresh to locally strong, in response to a tight pressure gradient downstream of a large high north of the islands. This has prompted an all water Small Craft Advisory, that will be in effect through this weekend.

The high will slightly weaken and slide east by the middle of next week. This will result in trades dropping back to more moderate magnitudes through the end of the week. Winds in the notoriously winder eastern island bays/channels and south of Big Island, will remain fresh to strong through the majority of next week.

A slowly declining south swell will have surf along south-facing shores gradually falling below summer averages this weekend. Background, long period southerly swell will hold into next week, until the arrival of a long period swell, that fills in late Tuesday through Wednesday. This swell may boost south-facing shore surf heights to near summertime averages Wednesday.

East-facing shore chop will increase this weekend, becoming rough and choppy, in response to the strengthened trade flow.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean: 

Tropical Cyclone 03L (Chantral)…is located 220 south-southwest of Wilmington, NC

cone graphic

Caribbean Sea:  There are no active tropical cyclone

Gulf of America:  There are no active tropical cyclone

 

Northeastern Pacific:  

Central East Pacific:

Invest 96E

>>> A large area of disorganized showers and thunderstorms is associated with a trough of low pressure located a few hundred miles south of southwestern Mexico. Gradual development of this system is anticipated during the next few days, and a tropical depression is likely to form late this weekend or early next week while it moves generally west-northwestward well off the coast of Mexico.

* Formation chance through 48 hours…medium…60 percent
* Formation chance through 7 days…high…80 percent

South of Southwestern Mexico:

>>> An area of low pressure could form several hundred miles offshore of southwestern Mexico late next week. Some gradual development of this system is possible thereafter while it moves generally west-northwestward.

* Formation chance through 48 hours…low…near 0 percent
* Formation chance through 7 days…low…20 percent

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

 

North Central Pacific:  There are no active tropical cyclones

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

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 and South Indian Ocean: 

Tropical Cyclone 04W (Mun)…is located approximately 395 NM northeast of Chichi Jima, Japan

https://www.metoc.navy.mil/jtwc/products/wp0425.gif

Tropical Cyclone 05W (Danas)…is located approximately 230 NM east-southeast of Hong Kong

https://www.metoc.navy.mil/jtwc/products/wp0525.gif

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 Cuts Milk Production, Even When Farmers Cool Their Cows

A new study finds extreme heat reduces milk production by up to 10 percent and adding cooling technologies only offsets about half of the loss.

While recent studies have shown climate change will cut crop production, there has been less research into its impacts on livestock. Dairy farmers already know their cows are vulnerable to heat. What will more heat mean? In one of the most comprehensive assessments of heat’s impact on dairy cows, a study in the journal Science Advances finds one day of extreme heat can cut milk production by up to 10 percent. The effects of that hot weather can last more than 10 days later, with efforts to keep cows cool being insufficient.

“Climate change will have wide-ranging impacts on what we eat and drink, including that cold glass of milk,” says one of the study’s co-authors Eyal Frank, an assistant professor at the Harris School of Public Policy. “Our study found that extreme heat leads to significant and lasting impacts on milk supply, and even the most high-tech, well-resourced farms are deploying adaptation strategies that may be an insufficient match to climate change.”

Frank and his co-authors Claire Palandri, Ayal Kimhi, Yaniv Lavon, Ephraim Ezra, and Ram Fishman studied the dairy industry in Israel, an advanced dairy system representative of top milk producing countries. The researchers analyze highly local weather data to measure humid heat’s impact on more than 130,000 Israeli dairy cows over 12 years. They then survey more than 300 dairy farmers to see how much cooling technologies have helped.

Read more at The University of Chicago