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

 

The latest update to this website was at 557am Saturday morning HST


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

0.97  Mount Waialeale, Kauai
0.17  Tunel RG, Oahu
0.09  Puu Alii, Molokai
0.00  Lanai City, Lanai
0.28  Puu Kukui, Maui
1.41  Kawainui Stream, Big Island


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

32  Port Allen, Kauai – ENE
44  Oahu Forest NWR, Oahu – E  
37  Makapulapai, Molokai – ENE
m  Lanai 1, Lanai – m
52  Kealaloloa Rg, Maui – NE
43  Kawaihae Rd, 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.

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Big Blue…click twice for largest version

 

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 Tropical Storm Genevieve far east-northeast…no threat to Hawaii 

 

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  High clouds moving across the state from the west at times

 

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Localized showers 

 

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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 at home here in upper Kula, Maui, Hawaii

456am, it’s mostly clear here in upper Kula with  with calm winds, and a low temperature at my place of 53 degrees…with the relative humidity 82%

 

>>> Highest Temperature Friday, July 31, 2026 – 123 southwest of Tecopa, CA

>>> Lowest Temperature Friday, July 31, 2026 – 33 degrees at Peter Sinks, UT

 

Interesting Web Blog: Mauka Showers…Tropical Cyclones that Threaten the Hawaiian Islands

 

Hawaii’s Weather Highlights…as of Saturday morning: A strong surface high will continue to build north of the state through through this afternoon. A drier and more stable air mass will also settle in over the state. Trades will ease back to more typical summertime breezy levels Sunday into early next week as the high weakens.

Isolated to scattered showers will mainly affect windward locations, with dry weather expected for leeward areas. An increase chance of windward clouds and showers may develop by mid-week.

Weather Narrative..as of Saturday morning: Satellite and radar imagery show scattered clouds with embedded showers focusing along windward and mountain locations. High clouds are moving west to east across the state, as the subtropical jet stream shifts over the area.

A strengthening high to the north of the islands is bringing in windy conditions across portions of the state. A Wind Advisory is in effect through this afternoon for the windy areas along ridges, through mountainous gaps and downslope mountain areas through the state, as well as the summits of the Big Island.

The high pressure will drift eastward on Sunday, loosening local pressure gradients, and easing trades back down to typical summertime levels. Drier conditions should settle in making for lower chances of windward and mountain showers, and even drier conditions for leeward area.

Through mid-week, trades will further ease as Tropical Storm Genevieve weakens to a post-tropical depression and tracks far northeast of the state, disrupting our trade wind flow. Bands of moisture will move over the state, returning typical scattered showers to windward and mountain slopes.

Model guidance continues to show a tropical upper level trough shifting just northwest of Kauai by the middle of the upcoming week. In addition an area of enhanced moisture may move from east to west across the state. If this comes to pass, expect a steady increase in low to upper level moisture/clouds and increasing chances of moderate to locally heavy windward and mountasin showers, especially for the western half of the state.

 

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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 Saturday morning: Strong trade winds continue across the coastal waters due to strong surface high pressure north of the state, meanwhile the windier waters around Maui County and the Big Island are near gale force. These windy trades will persist today, as the high strengthens and migrates south towards the islands. The Small Craft Advisory has been extended for all nearshore waters.

Winds will begin to trend down tonight and it appears likely that small craft winds will once again be relegated to the typically windy waters by Sunday. The combination of a strong mid-latitude trough, and Tropical Storm Genevieve passing far northeast of the islands induces a weakness in the ridge, which will then keep trade winds more moderate for the first half of the upcoming week.

The current medium-period south swell will continue to fade through tonight. This will be followed by continued small, medium-period pulses of energy out of the southerly quadrant during the next several days. Surf will therefore hover below the seasonal average through the middle of next week.

A small, medium period easterly swell generated by Tropical Storm Genevieve in the East Pacific, combined with increasing wind waves from the strong trades, is resulting in elevated surf along east facing shores. East shore surf will peak today below advisory criteria, before gradually declining through the middle of next week, as trades diminish and the swell from Genevieve fades.

Surf along north facing shores will remain flat to tiny. West facing shores will remain tiny as well, with the exception of those locations exposed to the south swell wrap.

 

The wild side of Hawaii ????? I've been to Hawaii so many times now and these islands just mean something different to me every visit, they really have a special place in


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.

 

Northeast Pacific:

Tropical Storm 07E (Genevieve)…is located about 1510 miles west of the southern tip of Baja California

GENEVIEVE SLOWLY WEAKENING

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IR Satellite Image

According to the NHC Advisory number 34 

Genevieve is moving toward the west-northwest near 14 mph. This general motion is expected to continue over the weekend, followed by a decrease in forward speed and a turn toward the northwest on Monday. Maximum sustained winds have decreased to near 45 mph with higher gusts. Gradual weakening is forecast, and Genevieve is expected to become a post-tropical cyclone by late Sunday. Tropical-storm-force winds extend outward up to 140 miles, mainly to the north of the center. The estimated minimum central pressure is 1003 mb (29.62 inches).

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

 

Central North Pacific: There are no active tropical cyclones

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

 

>>> Northwest Pacific Ocean:  

Tropical cyclone 12W (Dolphin)…is located approximately 843 NM east of Iwo To

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>>> 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:  Tropical Insects May Be Running Out of Room as Temperatures Rise

What happens when the climate changes faster than species can adapt?

A new study published in the Proceedings of the National Academy of Sciences (PNAS) suggests that many tropical insects may face exactly that challenge.

Researchers working in Costa Rica’s Área de Conservación Guanacaste (ACG) found that insects living in the cool cloud forests of Volcán Cacao have evolved to thrive within a remarkably narrow range of temperatures. As the climate warms, these species may have little ability to cope with hotter conditions moving upslope.

At the same time, insects living in the hot lowland forests appear to already be living close to their upper heat limits.

Read More: Guanacaste Dry Forest Conservation Fund

Image: Authors M. Alex Smith and Alexandre M. M. C. Loureiro on the trail to Cacao Volcano, Costa Rica (