West Kaua’i

Rest Of Tonight: Mostly cloudy with scattered showers. Lows around 75 near the shore to around 66 above 3000 feet. East winds up to 10 mph. Chance of rain 30 percent.

Saturday: Mostly sunny with isolated showers. Highs around 87 near the shore to around 77 above 3000 feet. East winds up to 15 mph shifting to the southwest in the afternoon. Chance of rain 20 percent.

Saturday Night: Mostly clear. Lows 73 to 80 near the shore to around 65 above 3000 feet. Northeast winds up to 15 mph.

South Kaua’i

Rest Of Tonight: Mostly cloudy with scattered showers. Lows 72 to 77. Light winds becoming east 10 to 15 mph after midnight. Chance of rain 40 percent.

Saturday: Mostly sunny with isolated showers. Highs 79 to 88. East winds 10 to 15 mph. Chance of rain 20 percent.

Saturday Night: Partly cloudy with isolated showers. Lows 70 to 81. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Kaua’i Mountains

Rest Of Tonight: Mostly cloudy with scattered showers. Lows around 71 in the valleys to around 63 above 4000 feet. Light winds becoming east up to 10 mph after midnight. Chance of rain 40 percent.

Saturday: Mostly sunny with isolated showers. Highs 75 to 83 in the valleys to around 68 above 4000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Scattered showers. Lows 67 to 72 in the valleys to around 61 above 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

North Kaua’i

Rest Of Tonight: Mostly cloudy with scattered showers. Lows 67 to 76. Light winds becoming east up to 10 mph after midnight. Chance of rain 30 percent.

Saturday: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 72 to 88. East winds up to 15 mph. Chance of rain 30 percent.

Saturday Night: Partly cloudy. Scattered showers in the evening, then isolated showers after midnight. Lows 66 to 76. East winds up to 10 mph. Chance of rain 30 percent.

East Kaua’i

Rest Of Tonight: Mostly cloudy with scattered showers. Lows 68 to 77. Light winds becoming east up to 10 mph after midnight. Chance of rain 40 percent.

Saturday: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 78 to 86. East winds around 10 mph. Chance of rain 30 percent.

Saturday Night: Partly cloudy. Isolated showers in the evening, then scattered showers after midnight. Lows 67 to 78. Northeast winds around 10 mph becoming up to 15 mph after midnight. Chance of rain 40 percent.

Detailed Forecast

Synopsis

Tropical Storm Nolo strengthen once again to a hurricane this afternoon away from the islands. Drier air mass will encompass the region tonight into the weekend.

Short term update

No major changes as previous forecast is on track.

Prev discussion

Issued at 352 PM HST Fri Oct 2 2026
Showers developed this afternoon across the windward site of the islands. Rest of the state remained dry. Trailing moisture induced by Hurricane Nolo's circulation which affected the state for most of this week, finally has moved away from the region. A drier air mass has established through the area while winds also have shifted from a southerly to a more easterly component. Although relatively dry conditions will prevail across the state during the weekend, showers are expected to develop each afternoon on the windward side of the islands.
Early next week, the trades will weaken in response to an approaching surface trough from the northeast and then will weaken further heading into midweek as broad troughing develops northwest of the state. In this lighter flow, land and sea breezes will become increasingly more prevalent with clearing expected overnight and clouds and a few showers developing over leeward and interior areas with daytime heating each afternoon.

Aviation

The high pressure ridge will build back over the Hawaii region with drier easterly trade wind weather returning just in time for the weekend. Lower humidity levels and mostly sunny skies will prevail through Sunday.
AIRMET Sierra remains in effect for mountain obscuration above 2000 feet over Kauai, Oahu, and above 2500 feet over portions of the Big Island. Conditions will improve for all islands as drier weather returns by Saturday morning.

Marine

Issued at 352 PM HST Fri Oct 2 2026
As Hurricane Nolo continues to strengthen and moves farther west away from the Hawaiian Islands, its influence on local weather will wane. Gentle to fresh east to northeast trade winds will fill back in on Saturday, along with drier air settling over the area. A Small Craft Advisory may be needed for the typically windy waters and channels by late this weekend for locally strong trades. By the middle of next week, troughing developing northwest of the islands may cause the trade winds to weaken and veer out of the southeast once again.
A moderate, medium-period west to southwest swell originating from Nolo that has been affecting Niihau and Kauai will quickly fade tonight. Meanwhile, a small background south swell continues for other islands, holding surf mostly steady along south facing shores through the weekend. A new small, long-period south swell, originating from a large fetch of gale force winds southeast of New Zealand earlier this week, is forecast to arrive beginning Sunday and peak Monday through Wednesday.
Surf along north-facing shores saw a small bump today as a small, short to medium period swell moved into the region. This will peak late today, then decline into the weekend. Another increase in small north shore surf is possible early next week as a small, medium- period northwest swell arrives this weekend and peaks on Monday. This will be followed by a slightly larger long-period northwest swell peaking on Wednesday. Surf along east facing shores will see a slight boost and become more choppy as easterly trades build back into the region this weekend.

Fire weather

Issued at 352 PM HST Fri Oct 2 2026
Drier air is expected over the weekend as moderate to locally breezy east-northeasterly trades return, which may increase the fire weather concern slightly to moderate levels. However, winds are expected to decrease early to midweek next week, lowering the fire weather concerns once again.

HFO Watches/Warnings/Advisories

None.

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Data Courtesy of NOAA.gov