The latest update to this website was at 506pm Monday (HST)

 

Here are the highest temperatures Monday…and the lowest Monday morning:

83 – 73  Lihue AP, Kauai
84 – 66  Molokai AP, Molokai
89 – 67  Kahului AP, Maui
85 – 73  Kona AP, Big Island
83 – 70  Hilo, AP, Big Island

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

0.71  Kilohana, Kauai
0.44  Tunnel RG, Oahu
0.02  Molokai AP, Molokai
0.18  Lanai
0.20  Hana AP, Maui
0.45  Puu Waawaa, 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 Monday evening:

21  Port Allen, Kauai
23  Kalaeloa, Oahu
27  Makapulapai, Molokai
25  Lanai 1, Lanai
36  Na Kula, Maui
24  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 

 

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 Monday comments:  I’m home here in upper Kula, Maui, Hawaii.

It’s mostly clear to partly cloudy here in Maui County this morning…with a few windward clouds.  The low temperature at my place was 53 degrees.

1137am, clouds are increasing rather quickly, both at the upper and lower levels of the atmosphere here on Maui.

302pm, it’s mostly sunny, with high and lower clouds scattered here and there, while the trade winds remain gusty in those more exposed areas.

Weather Wit of the day:  Dewey Decimals – What you get if you leave your calculator outside overnight

>>> Highest Temperature Monday, June 30, 2025 – 119 at Topock, Arizona
>>> Lowest Temperature Monday, June 30, 2025 – 27 at Peter Sinks, Utah

 

Hawaii’s Broad Brush Weather Overview:  Light east to east-southeast trade winds with localized land and sea breezes are expected through Tuesday, as a weak surface trough lingers north of the islands. High pressure will build north of the area by Wednesday, backing and increasing trade winds into the moderate to breezy range through the rest of the week.

Passing showers are expected for typical windward and mountain areas, with some additional showers over the leeward areas during afternoon cloud buildups. The trade winds could become moderate to strong by the weekend, as high pressure is forecast to build further.

Hawaii’s Weather Details: A surface trough to the north of the islands has weakened the pressure gradient, which has allowed trade wind speeds to be light to moderate and blow out of a east-southeast direction. Localized land and seas breezes are possible especially for sheltered leeward areas. This trough is expected to weaken and eventually dissipate around the middle of the week. This will result in trade winds backing to an easterly direction and gradually increasing into the moderate to breezy range.

A typical shower distribution can be expected through the week, with passing showers moving over windward and mountain areas, some additional cloud and shower buildups are expected for leeward areas, and to a lesser extent Tuesday afternoon as winds remain light. Drier conditions are possible Tuesday as a pocket of drier air moves through, followed by periodic plumes of moisture and dry air through Friday.

Conditions look to dry out further by the weekend and into next week, as high pressure becomes firmly established to the northeast and brings a dry and stable airmass to our our. Concurrently, global models indicate trade winds becoming breezy to strong. These factors could elevate fire weather concerns as shower activity could also be limited.

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:  A trough located far to the north, along with weakening surface high pressure to the northeast, will contribute to weakening trade winds over the next few days. A slight southerly component to the winds is expected as the trough to our north lingers. Winds should then become easterly and remain in the moderate to locally fresh range Tuesday through mid-week as the trough weakens and dissipates. Trade winds should strengthen by Independence Day into the weekend as high pressure builds to the north.

Surf along south facing shores will see a small, long-period south swell fill in and hold through Tuesday, with surf peaking near the summertime average. Surf heights will then gradually lower late Tuesday through the week, as the swell slowly declines, however small pulses will keep surf heights from falling flat. A smaller long-period south swell could move through toward the end of this week, for a slight boost to south shore surf.

Surf along east shores will remain small over the next several days, due to the trade winds weakening, then could increase towards the end of the week as trade winds strengthen. Surf along north facing shores will remain seasonally tiny through the week.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  There are no active tropical cyclones

Caribbean Sea:  There are no active tropical cyclone

Gulf of America:  There are no active tropical cyclone

Near the southeastern U.S.  

>>> A frontal boundary is expected to stall and weaken off the southeast U.S. coast late this week. An area of low pressure could develop from the weakening front by next weekend off the southeast U.S., over Florida, or over the eastern Gulf. Some gradual tropical or subtropical development could occur thereafter as the low moves little.

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

 

Northeastern Pacific:   

Tropical Cyclone 06E (Flossie)…is located about 185 south of Manzanillo, Mexico

FLOSSIE FORECAST TO BECOME A HURRICANE TONIGHT OR TUESDAY…LOCALLY HEAVY RAINFALL POSSIBLE ALONG COASTAL SOUTHWESTERN MEXICO

According to the NHC advisory number 7A

Flossie is moving toward the northwest near 12 mph. A northwest to west-northwest motion should continue over the next few days. Maximum sustained winds are near 65 mph with higher gusts. Steady to rapid strengthening is forecast during the next couple of days, and the system is expected to become a hurricane tonight or Tuesday. Tropical-storm-force winds extend outward up to 90 miles from the center.

South of Southwestern Mexico:

>>> An area of low pressure could form several hundred miles offshore of southwestern Mexico late this 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…30 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:  There are no active tropical cyclones

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:  Protecting the Unique Biodiversity of the Falklands

Emily Williams, an ecologist at the UK Centre for Ecology & Hydrology, discusses a project to tackle invasive non-native species on the Falkland Islands, which included a recent visit to share knowledge with local experts.

Invasive non-native species are not only a major concern for island biodiversity; in some cases, they can also threaten livelihoods and human health. Over the last three years, as part of the UKCEH-led Darwin Plus 175 project, we have had the privilege of working with communities across the UK Overseas Territories to increase understanding of the impacts of invasive species on these beautiful islands and support action to mitigate the threats the species pose.

The main focus of a recent visit to the Falklands by some of the project team – Helen Roy, David Roy and myself from UKCEH and Kelly Martinou of the Joint Services Health Unit, Cyprus – was to meet people who are working on the islands to tackle invasive species. The incredible knowledge of local experts has been invaluable for the project. Through a four-day workshop we gained valuable insights into both the ecology of the Falkland Islands, as well as the recent successes and challenges faced when working to monitor and control invasive species.

Read more at: UK Center for Ecology & Hydrology