West Kaua’i

Rest Of Tonight: Breezy. Partly cloudy with isolated showers. Lows 68 to 73 near the shore to around 60 above 3000 feet. Northeast winds up to 25 mph. Chance of rain 20 percent.

Wednesday: Breezy. Mostly sunny with isolated showers. Highs around 86 near the shore to around 73 above 3000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Wednesday Night: Breezy. Partly cloudy with isolated showers. Lows 68 to 74 near the shore to around 60 above 3000 feet. Northeast winds 10 to 20 mph decreasing to up to 20 mph after midnight. Chance of rain 20 percent.

South Kaua’i

Rest Of Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 72. Northeast winds 15 to 25 mph. Chance of rain 50 percent.

Wednesday: Breezy. Partly sunny with scattered showers. Highs 78 to 87. Northeast winds 15 to 25 mph. Chance of rain 40 percent.

Wednesday Night: Breezy. Mostly cloudy with scattered showers. Lows around 72. Northeast winds 15 to 20 mph. Chance of rain 50 percent.

Kaua’i Mountains

Rest Of Tonight: Mostly cloudy. Windy. Numerous showers in the evening, then scattered showers after midnight. Lows 62 to 68 in the valleys to around 57 above 4000 feet. Northeast winds 10 to 30 mph. Chance of rain 70 percent.

Wednesday: Windy. Partly sunny with scattered showers. Highs 70 to 79 in the valleys to around 63 above 4000 feet. East winds 10 to 30 mph. Chance of rain 50 percent.

Wednesday Night: Breezy. Mostly cloudy with scattered showers. Lows 63 to 69 in the valleys to around 58 above 4000 feet. Northeast winds 15 to 25 mph. Chance of rain 50 percent.

North Kaua’i

Rest Of Tonight: Mostly cloudy in the evening then becoming partly cloudy. Breezy. Scattered showers. Lows 63 to 73. East winds 10 to 20 mph. Chance of rain 50 percent.

Wednesday: Partly sunny in the morning then becoming mostly sunny. Breezy. Scattered showers. Highs 74 to 85. East winds 10 to 20 mph. Chance of rain 50 percent.

Wednesday Night: Breezy. Mostly cloudy with scattered showers. Lows 64 to 73. East winds 10 to 20 mph. Chance of rain 50 percent.

East Kaua’i

Rest Of Tonight: Breezy. Mostly cloudy with scattered showers. Lows 64 to 75. Northeast winds 10 to 20 mph. Chance of rain 50 percent.

Wednesday: Breezy. Partly sunny with scattered showers. Highs 70 to 83. Northeast winds 10 to 20 mph. Chance of rain 50 percent.

Wednesday Night: Breezy. Mostly cloudy with scattered showers. Lows 64 to 76. Northeast winds 15 to 20 mph. Chance of rain 50 percent.

Detailed Forecast

Update

Based on latest guidance, opted to include leeward and windward Maui zones into the current wind advisory through 6 AM Thursday.

Synopsis

A broad high far north of the Hawaiian Islands will keep breezy to windy trades in the forecast through late Wednesday. Enhanced shower activity and cloud coverage will remain focused over mainly windward and mauka areas. Trades will weaken, becoming moderate to breezy by Friday, as the high moves towards the northeast and weakens later this week.

Aviation

Breezy to locally windy trades will prevail into Thursday as strong surface high pressure passes far north of the islands. Stable conditions will focus clouds and showers across windward slopes, and an increase in moisture creating MVFR conditions prompted the issuance of AIRMET Sierra for windward Kauai, Oahu and Molokai this afternoon. This AIRMET will likely be expanded to additional islands overnight.
With gusty trades continuing, AIRMET Tango for mechanical turbulence over and downwind of terrain below 8,000 feet will remain in effect into Thursday.

Marine

A strong surface high centered north of the islands is producing fresh to strong trade winds across Hawaiian waters this afternoon. As this high drifts slightly closer to Hawaii over the next day or so, trades will increase even further, becoming strong to gale force by tonight into Wednesday. The strong trade winds, combined with building northeast and northwest swells, will also result in seas greater than 10 feet across the area. A Gale Warning has been issued for the Alenuihaha Channel, where flow funneling through the terrain of Maui and the Big Island will accelerate trades even more. Elsewhere, a Small Craft Advisory (SCA) remains in effect for a combination of winds and seas. The high to our north will gradually drift eastward and weaken Friday, leading to moderate to fresh trades through this weekend.
The current short to moderate period, north-northeast (020-030 degrees) swell that produced advisory level surf along north and east facing shores today is shifting to become more northeasterly (030-050 degrees). As a result, north shore surf has declined below advisory levels this afternoon, so the High Surf Advisory has been cancelled for north facing shores. However, large surf will persist along east facing shores, and the High Surf Advisory for east facing shores has been extended through Thursday afternoon. Although the swell direction is shifting more northeasterly, surges at north facing harbors, mainly Hilo and Kahului, remain possible through tonight. A Marine Weather Statement remains in effect to highlight this. Additionally, a combination of higher than predicted water levels, large breaking waves, and strong onshore winds could lead to significant wave runup, beach erosion, and localized coastal flooding for east facing shores during daily peak high tide cycle. Northeast swell energy should decline on Thursday as local trade winds begin to decline, with east shore surf steadily dropping Friday through the weekend.
A small, long period northwest swell will fill in tonight into Wednesday, keeping surf along north and some west facing shores elevated but below advisory levels.
The current small, long period south swell will peak tonight and then begin to fade by late Wednesday, keeping surf near or slightly above the November average until it declines Thursday.

Prev discussion

/ISSUED 357 PM HST Tue Nov 11 2025/
The latest surface analysis places a broad 1036 mb high far north of the Hawaiian Islands this afternoon. This is keeping breezy to locally windy trades blowing across the islands, with some of the wind prone areas on the Big Island and Maui briefly exceeding wind advisory criteria of 30 mph. Trades are expected to increase late tonight into Wednesday as the pressure gradient across the state tightens, with more widespread and persistent winds exceeding advisory criteria. Based on the latest guidance, a Wind Advisory has been issued for portions of Maui County and the Big Island. The strongest winds are expected to continue through Wednesday night, then slowly weaken and become moderate to breezy by Friday as the high drifts towards the northeast and weakens.
Throughout the week, the enhanced trades will bring periods of shower activity, particularly across windward and mauka areas. Guidance continues to show an uptick in shower activity on Wednesday as an area of moisture associated with a dissipating front gets embedded in the trade wind flow, with the bulk of the moisture aimed at Maui and the Big Island. GFS total precipitable water (PWAT) Normalized Anomaly continues to show PWATs around 1 to 2 standard deviations above normal during this time while the ECMWF shows PWATs around 0 to 1 standard deviations above normal. Either way, expect windward trade showers to be prominent through the week, then gradually lessen heading into the weekend.
A slightly drier air mass will keep dew points mainly in the mid 60s through the week. A few hours of lower relative humidity is once again possible late Wednesday morning as guidance shows a transient dry slot moving across the state. This should be short- lived as the low-level moisture embedded in the trades moves in by Wednesday afternoon. Additional areas of moisture should help to keep relative humidity elevated through the rest of the week.
In the longer range, by early next week, some model guidance indicates an influx of an abundance of moisture will be pulled northward and engulf the Hawaiian Islands as a surface trough produces southerly flow. Model PWAT Normalized Anomalies during this time are suggesting PWAT values upwards of 3 standard deviations above normal; the first indication that heavy rainfall may be in the future. However, confidence remains low at this time, given the long lead time before the event. That said, future shifts will need to monitor model trends to determine how accurate this initial assessment proves to be.
AVIATION… Breezy to locally windy trades will prevail into Thursday as strong surface high pressure passes far north of the islands. Stable conditions will focus clouds and showers across windward slopes, and an increase in moisture creating MVFR conditions prompted the issuance of AIRMET Sierra for windward Kauai, Oahu and Molokai this afternoon. This AIRMET will likely be expanded to additional islands overnight.
With gusty trades continuing, AIRMET Tango for mechanical turbulence over and downwind of terrain below 8,000 feet will remain in effect into Thursday.
MARINE… A strong surface high centered north of the islands is producing fresh to strong trade winds across Hawaiian waters this afternoon. As this high drifts slightly closer to Hawaii over the next day or so, trades will increase even further, becoming strong to gale force by tonight into Wednesday. The strong trade winds, combined with building northeast and northwest swells, will also result in seas greater than 10 feet across the area. A Gale Warning has been issued for the Alenuihaha Channel, where flow funneling through the terrain of Maui and the Big Island will accelerate trades even more. Elsewhere, a Small Craft Advisory (SCA) remains in effect for a combination of winds and seas. The high to our north will gradually drift eastward and weaken Friday, leading to moderate to fresh trades through this weekend.
The current short to moderate period, north-northeast (020-030 degrees) swell that produced advisory level surf along north and east facing shores today is shifting to become more northeasterly (030-050 degrees). As a result, north shore surf has declined below advisory levels this afternoon, so the High Surf Advisory has been cancelled for north facing shores. However, large surf will persist along east facing shores, and the High Surf Advisory for east facing shores has been extended through Thursday afternoon. Although the swell direction is shifting more northeasterly, surges at north facing harbors, mainly Hilo and Kahului, remain possible through tonight. A Marine Weather Statement remains in effect to highlight this. Additionally, a combination of higher than predicted water levels, large breaking waves, and strong onshore winds could lead to significant wave runup, beach erosion, and localized coastal flooding for east facing shores during daily peak high tide cycle. Northeast swell energy should decline on Thursday as local trade winds begin to decline, with east shore surf steadily dropping Friday through the weekend.
A small, long period northwest swell will fill in tonight into Wednesday, keeping surf along north and some west facing shores elevated but below advisory levels.
The current small, long period south swell will peak tonight and then begin to fade by late Wednesday, keeping surf near or slightly above the November average until it declines Thursday.

HFO Watches/Warnings/Advisories

High Surf Advisory until 6 PM HST Thursday for Olomana, Maui Windward West, Kauai East, East Honolulu, Koolau Windward, Molokai Windward, Molokai Southeast, Windward Haleakala, Kipahulu, Big Island East, Big Island North.
Wind Advisory until 6 AM HST Thursday for Lanai Mauka, Kahoolawe, Maui Windward West, Maui Leeward West, Kohala, Big Island Interior, Lanai Windward, Lanai Leeward, Maui Central Valley North, Maui Central Valley South, South Haleakala, Big Island Southeast, Big Island North.
Small Craft Advisory until 6 PM HST Thursday for Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters, Kaiwi Channel, Maui County Windward Waters, Maui County Leeward Waters, Maalaea Bay, Pailolo Channel, Big Island Windward Waters, Big Island Leeward Waters, Big Island Southeast Waters.
Gale Warning until 6 AM HST Thursday for Alenuihaha Channel.

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