The latest update to this website was at 830pm Monday (HST)

 

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

0.53  Puu Lua, Kauai
0.16  Kahana, Oahu
0.11  Molokai 1, Molokai
0.09  Lanai 1, Lanai
0.07  Kula 1, Maui
0.34  Ahumoa, Big Island

The following numbers represent the strongest wind gusts (mph) as of Monday evening:

17  Barking Sands, Kauai
20  Oahu Forest NWR, Oahu
18  Makapulapai, Molokai
18  Lanai 1, Lanai
21  Kahului AP, Maui
18  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/GOES18/ABI/SECTOR/tpw/13/GOES18-TPW-13-900x540.gif

Thunderstorms south and northeast…low pressure systems with their associated troughs and cold fronts northeast through northwest 

 

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

High clouds moving by just south of the state

 

 

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

Showers locally 

 

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 with a few clouds here in Maui County early this morning. The low temperature at my place was 53 degrees…with a relative humidity of 76%.

123pm, it’s a mix of clouds around the mountains, partly cloudy half way down the mountains, and still sunny down along the beaches, at least here on Maui.

I was down at the Kahului AP picking up a friend, it was very warm, in the upper 80’s, then 84 in Makawao when I let her off, and a more comfortable 75 when I got home here in upper Kula.

511pm, it’s turned mostly sunny, although there are still some clouds hugging the mountain slopes.

607pm, in a matter of minutes a cloud bank has made Kula and other areas mostly cloudy, such a fast change! The temperature here at my weather tower is 66.9 degrees, with the RH running 71%.

829pm, those late in the day clouds have almost completely evaporated now, and as such, the temperature has dropped quickly to 58.6 degrees, with the RH down to 66%

Weather Wit of the day: Land Fill – The community scenter

Interesting Blog…Mauka Showers – Wrapping Up Dry Season 2025, And Look, La Niña is Here!

>>> Highest Temperature Monday, October 13, 2025 – 98 at Rio Grande Village, Texas
>>> Lowest Temperature Monday, October 13, 2025 – 10 near Calpet, WY

 

Hawaii’s Broad Brush Weather Overview: An upper-level low north of the state will continue to move south through midweek, weaken some, and slowly move to the west. Strengthening high pressure far northeast will bring returning trade winds to the region starting Wednesday. The upper level low will enhance trade winds showers, particularly over the western end of the state.

Hawaii’s Weather Details: Light winds with localized land and sea breezes will continue through Tuesday As high pressure far to the north-northeast sinks southward, the pressure gradient over the islands will strengthen, which will result in trade winds returning in strength Wednesday.

An upper level low, developing along the northeast to southwest oriented upper level trough to the north of the islands, will sink southwards towards the islands over the coming days. This upper level system is already producing thunderstorms to the northeast of the islands…just outside of the offshore waters.

The main question in the forecast is whether or not all the pieces will come together at the same time. While the GFS and ECMWF models both agree with the upper level low forming along the upper level trough, and sinking southward towards the islands, there are some subtle differences in strength and placement particularly during the second half of the week. Precipitable water values increase, but do not necessarily correspond with the coldest temperatures aloft, as the upper low comes closer to the islands.

Moderate trade winds returning at the surface Wednesday could disrupt organized thunderstorm development. The forecast includes the mention of thunderstorms, with locally heavy rainfall possible, Wednesday afternoon into Friday for Kauai and Oahu, and expands to portions of Maui County and the Big Island Thursday and Thursday night.

While enough guidance suggests that thunderstorms and some locally heavy rainfall is possible during this time frame, confidence is lower with regards the possibility of rainfall that could cause widespread flooding concerns. We shouild continue to monitor future model runs, to help determine if the conditions are lining up for that or not.

Fire weather:  Light winds and isolated to scattered showers will help maintain fire weather below critical thresholds for the next several days. Inversion heights will range from 6,000 to 7,000 feet.

Here’s a near real-time Wind Profile of the Pacific Ocean – along with a Closer View of the islands / Vog map animation / 8-Day Precipitation model

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

 

Hawaii’s Marine Environment:  A trough will linger north of Hawaii resulting in light east to southeast winds across the state. The trough will fade while high pressure builds far to the northeast Tuesday night, with trade winds building in for the rest of the week. An upper low will also track over the islands beginning around Tuesday night, resulting in possible thunderstorms Wednesday through Friday.

A long period northwest swell has arrived and will peak tonight. A High Surf Advisory is now posted for north and west facing shores of Niihau, Kauai, Oahu, Molokai and north facing shores of Maui through Tuesday. Surf will drop off Tuesday night through Thursday.

Small, medium period south swell will continue through the week, with minor pulses of longer periods arriving tonight and again on Saturday. East shores will remain small due to light winds, but should begin to increase beginning Wednesday as trades strengthen.

There may be some minor flooding within low laying areas during high tide.

 



World-wide Tropical Cyclone Activity

 

Atlantic Ocean:  

Tropical Cyclone Lorenzo is located about 1245 miles west of the Cabo Verde Islands

LORENZO GAINING STRENGTH OVER THE TROPICAL ATLANTIC

According to the NHC advisory number 4

Lorenzo is moving toward the northwest near 13 mph, and this motion is expected through Tuesday, followed by a turn to the north Tuesday night. A northeastward motion is expected on Wednesday and Thursday. Satellite data indicate that the maximum sustained winds have increased to near 60 mph with higher gusts. Some additional strengthening is forecast during the next few days. Tropical-storm-force winds extend outward up to 175 miles from the center. The estimated minimum central pressure is 999 mb (29.50 inches).

cone graphic

Caribbean Sea:  There are no active tropical cyclone

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

Gulf of America:  There are no active tropical cyclone

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

 

Northeastern Pacific: 

South of Southern Mexico:

>>> A broad area of low pressure located a couple hundred miles south-southwest of Guatemala is producing disorganized showers and thunderstorms. Environmental conditions appear conducive for development during the latter half of the week, and a tropical depression could form as the system drifts northward, then northwestward, near or just offshore of the southern coast of Mexico.

* Formation chance through 48 hours…low…10 percent
* Formation chance through 7 days…medium…50 percent

 

North Central Pacific: There are no active tropical cyclone

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: 

Tropical Cyclone 29W (Nakri)…is located approximately 555 NM east of Yokosuka, Japan

https://www.metoc.navy.mil/jtwc/products/wp2925.gif

Southwest Pacific Ocean:  There are no active tropical cyclones

North and South Indian Ocean:  There are no active tropical cyclones

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:  Parched Soils Can Spark Hot Drought a Nation Away

A new study found compound drought-heatwave events are rippling farther and lasting through the night, raising risks for southwestern North America.

Dry soils in northern Mexico may trigger episodes of simultaneous drought and heatwave hundreds of miles away in the southwestern United States, such as Arizona, New Mexico, and Texas, according to a new study. These “hot droughts” in the region increasingly persist through consecutive days and nights rather than easing up after sundown, the research also found, leaving no window for afflicted areas to recover.

Hot drought can kill crops, worsen wildfire risk, and shock workers and outdoor enthusiasts with unexpectedly high temperatures, all more than either drought or heat alone can do. Scientists involved in the study say the findings could help communities better anticipate and prepare for these stressful events in advance, such as by limiting outdoor working hours, keeping medically vulnerable individuals inside, and opening cooling centers when soils far upwind desiccate.

The study appears in Geophysical Research Letters, AGU’s journal for high-impact, innovative, and timely articles on major advances across the geosciences.

Read More: American Geophysical Union