Photo Credit: Jason Weingardt

West Kaua’i

Today: Partly sunny with isolated showers early in the morning, then mostly sunny in the late morning and afternoon. Highs around 83 near the shore to around 72 above 3000 feet. Northeast winds up to 10 mph shifting to the southwest in the afternoon. Chance of rain 20 percent.

Tonight: Partly cloudy. Isolated showers after midnight. Lows 64 to 71 near the shore to around 54 above 3000 feet. Northeast winds up to 10 mph. Chance of rain 20 percent.

Thursday: Mostly sunny. Highs around 80 near the shore to around 69 above 3000 feet. Northeast winds up to 15 mph.

South Kaua’i

Today: Partly sunny. Isolated showers in the morning. Highs around 80. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy with isolated showers. Lows 61 to 70. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Thursday: Partly sunny. Breezy. Isolated showers in the morning. Highs around 77. Northeast winds 10 to 20 mph. Chance of rain 20 percent.

Kaua’i Mountains

Today: Mostly cloudy. Scattered showers in the morning, then isolated showers in the afternoon. Highs 71 to 77 in the valleys to around 63 above 4000 feet. Northeast winds up to 15 mph. Chance of rain 40 percent.

Tonight: Mostly cloudy with scattered showers. Lows 53 to 61 in the valleys to around 49 above 4000 feet. Northeast winds 10 to 15 mph decreasing to up to 15 mph after midnight. Chance of rain 40 percent.

Thursday: Mostly cloudy. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs 68 to 74 in the valleys to around 60 above 4000 feet. Northeast winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.

North Kaua’i

Today: Partly sunny with isolated showers. Highs 73 to 83. East winds up to 10 mph shifting to the northeast in the afternoon. Chance of rain 20 percent.

Tonight: Mostly cloudy. Isolated showers in the evening, then scattered showers after midnight. Lows 58 to 69. Northeast winds 10 to 15 mph shifting to the east after midnight. Chance of rain 30 percent.

Thursday: Partly sunny with isolated showers. Highs 70 to 80. East winds up to 15 mph shifting to the northeast in the afternoon. Chance of rain 20 percent.

East Kaua’i

Today: Partly sunny with isolated showers. Highs 72 to 82. Northeast winds up to 10 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 20 percent.

Tonight: Mostly cloudy. Isolated showers in the evening, then scattered showers after midnight. Lows 54 to 72. Northeast winds 10 to 15 mph. Chance of rain 40 percent.

Thursday: Partly sunny with isolated showers. Highs 69 to 79. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Detailed Forecast

Synopsis

Mostly dry and pleasant conditions will prevail through the weekend as high pressure builds to the north. Light to moderate northerly winds will shift out of a more typical northeast trade wind direction today, then remain in place through the weekend. As the trades return, clouds and light showers will favor the typical windward and mauka locations overnight through the morning hours.

Discussion

The latest model guidance has initialized well with the current pattern and depicts mostly dry conditions prevailing through the weekend as high pressure builds north of the state. The northerly winds will linger this morning, then shift out of the northeast through the rest of the day (light enough for localized land and sea breeze conditions). Although mostly dry conditions will prevail, a weak upper trough moving in today through Thursday, combined with a remnant low-level moisture boundary settling south into the area may be enough for a few light showers over north through northeast facing slopes. The light northeast flow will become breezy Thursday, briefly weaken late Friday through Saturday as a weak system passes to the north, then shift out of the east and return to breezy levels Sunday into early next week as high pressure builds to the north.

Aviation

Light north to northeast flow will allow local sea breeze development across sheltered areas today. Expect brief MVFR conditions across windward and mauka locations, especially within sparse showers. Otherwise, VFR conditions should prevail through the TAF period.
No AIRMETS are in effect and none are expected today and tonight.

Marine

Light to moderate northerlies will veer to the northeast today. High pressure will build north of the region and drift east as trades persist into next week, becoming moderate to fresh by this weekend.
Surf along south facing shores came in notably higher and will hold through Thursday as overlapping south swells will keep elevated surf through the end of the week. The current northwest swell will become increasingly north as it gradually lowers through Thursday. Surf along east facing shores remains small through late week before trending up slightly as trade strengthen late this week.

HFO Watches/Warnings/Advisories

None.

Data Courtesy of NOAA.gov