West Kaua’i

Rest Of Today: Mostly cloudy with numerous showers late in the morning, then mostly sunny with isolated showers in the afternoon. Highs around 82 near the shore to around 68 above 3000 feet. South winds up to 10 mph. Chance of rain 60 percent.

Tonight: Partly cloudy with isolated showers. Lows around 63 near the shore to around 52 above 3000 feet. Light winds. Chance of rain 20 percent.

Monday: Partly sunny with scattered showers. Haze in the afternoon. Highs around 82 near the shore to around 68 above 3000 feet. East winds up to 15 mph. Chance of rain 50 percent.

South Kaua’i

Rest Of Today: Mostly cloudy with numerous showers late in the morning, then mostly sunny in the afternoon. Highs 76 to 83. Southwest winds up to 10 mph. Chance of rain 60 percent.

Tonight: Partly cloudy in the evening, then mostly cloudy with scattered showers after midnight. Lows around 61. Light winds becoming north up to 10 mph after midnight. Chance of rain 40 percent.

Monday: Mostly cloudy with scattered showers. Haze in the afternoon. Highs 75 to 81. Northeast winds 10 to 15 mph. Chance of rain 50 percent.

Kaua’i Mountains

Rest Of Today: Partly sunny. Scattered showers late in the morning, then isolated showers in the afternoon. Highs 70 to 81 in the valleys to around 62 above 4000 feet. Light winds. Chance of rain 50 percent.

Tonight: Mostly cloudy. Scattered showers in the evening, then numerous showers after midnight. Lows around 59 in the valleys to around 50 above 4000 feet. Light winds. Chance of rain 70 percent.

Monday: Mostly cloudy with numerous showers. Haze in the afternoon. Highs 69 to 78 in the valleys to around 61 above 4000 feet. East winds up to 10 mph. Chance of rain 70 percent.

North Kaua’i

Rest Of Today: Mostly sunny late in the morning then becoming partly sunny. Isolated showers late in the morning, then scattered showers in the afternoon. Highs 73 to 81. Light winds. Chance of rain 40 percent.

Tonight: Mostly cloudy with scattered showers. Lows 56 to 65. Light winds becoming east up to 15 mph after midnight. Chance of rain 50 percent.

Monday: Mostly cloudy with scattered showers. Haze in the afternoon. Highs 73 to 80. East winds up to 15 mph. Chance of rain 50 percent.

East Kaua’i

Rest Of Today: Partly sunny. Scattered showers late in the morning, then isolated showers in the afternoon. Highs 71 to 82. Southwest winds up to 10 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with isolated showers in the evening, then mostly cloudy with scattered showers after midnight. Lows 57 to 66. Light winds becoming north up to 10 mph after midnight. Chance of rain 50 percent.

Monday: Mostly cloudy with scattered showers. Haze in the afternoon. Highs 69 to 80. East winds 10 to 15 mph. Chance of rain 50 percent.

Detailed Forecast

Update

Satellite imagery and web cameras no longer show no significant ash falling near Kilauea Volcano due to yesterday's eruption. The Ashfall Advisory has been cancelled.

Synopsis

A high pressure ridge over the Hawaiian Islands today ahead of an approaching weak cold front will keep light and variable winds across the region today. Sea breezes will develop over all islands today, briefly turning into easterly trade winds on Monday as the cold front stalls out near Kauai. Expect increasing shower trends for the northwest islands from Sunday night through Monday as the stalled front dissipates. The ridge will build in over the island chain producing drying trends from Tuesday into Wednesday. Another weak cold front stalls out near Kauai with the next round of increasing clouds and shower trends from Thursday into Friday.

Prev discussion

/ISSUED 349 AM HST Sun Jan 25 2026/ The eye in the sky satellite imagery today shows significant clearing of cloud cover as the ridge sets up in a east to west orientation across the Hawaii region. High level cirrus clouds are creeping in from the north ahead of the approaching cold front currently moving through Midway Atoll. Expect light and variable large scale winds to produce heat driven onshore sea breezes during the daylight hours over all islands. Mountain and interior cloud cover will be limited due to the stronger subsidence aloft under the stable ridge axis.
By tonight the weak cold front moves into Kauai and stalls out between Kauai and Oahu, and then dissipates through Monday. Expect increasing clouds and shower trends over Kauai and Niihau later tonight, with similar trends spreading to Oahu by Monday morning. Global weather models continue to show significant differences in how far the front moves down the island chain. The American (GFS) model stalls the frontal cloud band near Kauai and Oahu by Monday morning, keeping drier conditions across the central islands in Maui County and over the Big Island. The European Model (ECMWF) remains the more progressive of the two model solutions with a stronger northerly component wind direction, driving the front further south into Maui and the Big Island as it rapidly dissipates into a surface trough. A brief period of easterly trade winds are forecast for Monday, before wind directions veer from a more southeasterly and southerly direction ahead of the next approaching cold frontal system.
In the long range forecast outlook we see another high pressure ridge building in from east to west across the island chain. This ridge will increase stable subsidence across the state, lowering the temperature inversion heights, and limiting cloud cover and shower activity from Tuesday through Wednesday night.
By Thursday another weak cold front stalls out near Kauai with the next round of increasing clouds and shower trends over the northwest islands from Thursday into Friday. Surprisingly, this far out in the forecast time period, both the GFS and ECMWF models are in better agreement with this next stalling cold front.

Aviation

VFR conditions will prevail through much of the next 24 hours. Light and variable winds will support the development of diurnal land breezes overnight and sea breezes during the afternoon. The background flow will remain out of the south to southeast today, then gradually shift out of the north by early Monday as a weakening frontal boundary approaches from the north. Rainfall chances will increase as the front settles southward into the area, with the best potential for showers focused over northern and windward-facing slopes of Kauai and Oahu late tonight into Monday. These showers could result in brief periods of MVFR ceilings and visibility. Therefore, an AIRMET Sierra for mountain obscuration may be needed late tonight into Monday for these areas.

Marine

Light winds will prevail across the island chain today ahead of a front that is approaching the region from the northwest. Within this light wind regime, nearshore sea breezes will commence during the day, with land breezes resuming at night. Trades briefly return on Monday followed by another around of light and variable background winds throughout much of the rest of this week.
Buoy observations from Hanalei and Waimea show that a new small, long period northwest swell arrived and peaked overnight into early this morning. This swell, which resulted in an overnight bump in surf along north and west facing shores, will gradually decline today. The next, slightly larger, medium period northwest swell will begin arriving into the islands on Monday, continuing to build Monday night. This will be quickly followed by a moderate, long period north northwest swell Tuesday that will peak Tuesday night, then decline through Wednesday. The most impactful swell for surf along north and west facing shores over the next few days will be late in the week when a large, medium period northwest swell arrives in the islands. This late week swell is forecast to peak near the High Surf Warning thresholds for north and west facing shores.
Surf along E shores will remain small over the next few days due to a lack of trades. Surf along south facing shores will see a small boost from a tiny, long period energy poised to arrive tonight and continuing through at least the first half of the week.

HFO Watches/Warnings/Advisories

None.

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Data Courtesy of NOAA.gov