Photo Credit: Jason Weingardt

West Kaua’i

Rest Of Today: Partly sunny in the morning then becoming mostly sunny. Breezy. Highs around 87 near the shore to around 77 above 3000 feet. Northeast winds up to 20 mph.

Tonight: Partly cloudy. Breezy. Lows 70 to 75 near the shore to around 61 above 3000 feet. Northeast winds up to 20 mph.

Friday: Mostly sunny. Breezy. Highs around 87 near the shore to around 77 above 3000 feet. East winds up to 20 mph.

South Kaua’i

Rest Of Today: Partly sunny. Breezy. Isolated showers in the morning. Highs around 86. Northeast winds 15 to 25 mph. Chance of rain 20 percent.

Tonight: Breezy. Mostly cloudy with isolated showers. Lows 68 to 74. Northeast winds 15 to 20 mph. Chance of rain 20 percent.

Friday: Partly sunny. Breezy. Isolated showers in the morning. Highs around 86. Northeast winds 15 to 20 mph. Chance of rain 20 percent.

Kaua’i Mountains

Rest Of Today: Cloudy in the morning then becoming partly sunny. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs 73 to 81 in the valleys to around 70 above 4000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.

Tonight: Breezy. Mostly cloudy with scattered showers. Lows 61 to 66 in the valleys to around 56 above 4000 feet. East winds up to 20 mph. Chance of rain 50 percent.

Friday: Mostly cloudy. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs 73 to 81 in the valleys to around 70 above 4000 feet. East winds up to 15 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.

North Kaua’i

Rest Of Today: Breezy. Mostly cloudy with isolated showers. Highs 76 to 86. East winds up to 20 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy with isolated showers. Lows 64 to 74. East winds up to 15 mph becoming around 10 mph after midnight. Chance of rain 20 percent.

Friday: Partly sunny with isolated showers. Highs 76 to 86. East winds up to 15 mph. Chance of rain 20 percent.

East Kaua’i

Rest Of Today: Breezy. Mostly cloudy with isolated showers. Highs 75 to 86. Northeast winds 10 to 20 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy with isolated showers. Lows 62 to 75. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Friday: Mostly cloudy with isolated showers. Highs 75 to 86. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Detailed Forecast

Synopsis

Breezy easterly trade winds will continue through early next week, with clouds and showers favoring windward and mauka areas.

Discussion

Guidance remains in good agreement and depicts a return of a more typical trade wind pattern today, which will persist into next week as strong high pressure remains anchored to the north. Pockets of low-level moisture moving through from east to west will enhance shower coverage periodically over windward areas, mostly overnight through the morning periods. Rainfall accumulations will be minimal through the period, with little to no rain expected over most leeward areas.

Aviation

A vast field of broken to overcast stable low clouds extends east from the islands and will likely create MVFR ceilings across windward shores and slopes through today. Windward TAF sites may see MVFR ceilings from time to time. Our airmass is rather stable, so showers will not be heavy enough to impact visibilities significantly. Blustery trade winds will continue for the next day or so.
AIRMET Tango remains in effect for tempo moderate turbulence below 9000 feet over and immediately south through west of mountains on all islands. AIRMET Sierra remains in effect for tempo mountain obscuration for Maui, Molokai, Oahu, and Kauai, and the Big Island.

Marine

A high pressure system building in the Central Pacific basin over the next few days will keep fresh to strong trade winds blowing across the region through next week Wednesday. The Small Craft Advisory has decreased in coverage this morning, back to the windier waters around Maui and the Big Island.
No significant swells are expected over the next seven days with only small surf heights forecast into early next week. Surf along east facing shores will remain small and choppy, driven by trade wind wave energy. A small long period south-southwest (200 degree) background swell will move into the islands from Sunday through Tuesday with only a small increase in the surf heights along south facing shores.

HFO Watches/Warnings/Advisories

Small Craft Advisory until 6 AM HST Saturday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.

Data Courtesy of NOAA.gov