West Kaua’i
Rest Of Tonight: Mostly clear. Lows around 75 near the shore to around 64 above 3000 feet. Light winds becoming east up to 10 mph after midnight.
Saturday: Mostly sunny with isolated showers. Highs around 88 near the shore to around 78 above 3000 feet. East winds up to 15 mph. Chance of rain 20 percent.
Saturday Night: Partly cloudy. Isolated showers in the evening. Lows 68 to 76 near the shore to around 62 above 3000 feet. East winds up to 10 mph. Chance of rain 20 percent.
South Kaua’i
Rest Of Tonight: Partly cloudy with isolated showers. Lows 71 to 78. Light winds. Chance of rain 20 percent.
Saturday: Partly sunny with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs 80 to 89. East winds up to 15 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 40 percent.
Saturday Night: Partly cloudy with isolated showers. Lows 70 to 79. East winds 10 to 15 mph. Chance of rain 20 percent.
Kaua’i Mountains
Rest Of Tonight: Partly cloudy. Isolated showers after midnight. Lows around 70 in the valleys to around 62 above 4000 feet. Light winds becoming southeast up to 10 mph after midnight. Chance of rain 20 percent.
Saturday: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 77 to 84 in the valleys to around 69 above 4000 feet. Southeast winds up to 10 mph. Chance of rain 50 percent.
Saturday Night: Mostly cloudy with scattered showers in the evening, then partly cloudy with isolated showers after midnight. Lows around 66 in the valleys to around 58 above 4000 feet. East winds up to 10 mph in the evening becoming light. Chance of rain 40 percent.
North Kaua’i
Rest Of Tonight: Mostly clear. Isolated showers after midnight. Lows 66 to 76. Light winds. Chance of rain 20 percent.
Saturday: Mostly sunny with isolated showers. Highs 74 to 88. Southeast winds up to 10 mph. Chance of rain 20 percent.
Saturday Night: Partly cloudy with isolated showers. Lows 63 to 73. East winds up to 10 mph. Chance of rain 20 percent.
East Kaua’i
Rest Of Tonight: Partly cloudy with isolated showers early in the evening, then mostly cloudy with scattered showers after midnight. Lows 67 to 77. Light winds. Chance of rain 30 percent.
Saturday: Partly sunny with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs 79 to 87. East winds up to 10 mph. Chance of rain 40 percent.
Saturday Night: Partly cloudy with isolated showers. Lows 65 to 77. East winds around 10 mph. Chance of rain 20 percent.
Detailed Forecast
Synopsis
Moisture will decrease through the weekend as light to moderate trades return. Showers will be mainly windward and mauka. We'll see a brief increase in showers Monday night on the Big Island before a return to relatively dry trades through the end of next week.
Short term update
No updates made. Previous forecast is on track.
Prev discussion
Issued at 330 PM HST Fri Oct 9 2026
Radar showed only isolated showers, mainly over the eastern half of the state. Skies were partly to mostly cloudy, with the exception of southern and central Oahu, where skies were mostly sunny.
The upper level low that helped bring so much rain to the area this week will weaken, fill, and move away to the northeast over the next few days. A surface high pressure system to our northeast will strengthen and bring easterly trades back to the state Saturday. Apart from a brief increase in moisture mainly for the Big Island Monday, the next seven days will be dominated by relatively dry trades. Isolated to scattered showers windward and mauka will be most frequent at night. Otherwise, expect light to moderate winds and rather typical October conditions.
Aviation
Gentle land breezes will persist through this evening before moderate trade winds build back into the islands over the weekend. VFR conditions will prevail at all airfields.
No AIRMETS are currently in effect or expected.
Marine
Issued at 330 PM HST Fri Oct 9 2026
Moderate to fresh trade winds will build back over the windward waters and channels this weekend, though weaker winds will remain in place over the western waters due to a trough west of the area. Although there will be slight day to day fluctuations, gentle to fresh trades will prevail throughout much of next week.
The current moderate, long period south swell will fade gradually through the weekend, but a long-period reinforcement is set to arrive on Saturday, then peak Sunday into Monday. This will maintain elevated surf along south-facing shores, but it will remain below advisory levels. South-shore surf will decline slightly by the middle of next week, only to be followed by a new long period swell Wednesday night or Thursday.
Small to moderate surf is also expected along north and west facing shores as a medium-period swell produced by low pressure to the northwest of the islands peaks this evening and tonight and then declines through the weekend. A smaller long period northwest swell is also forecast to move through the islands this weekend and fade by the beginning of next week. A swell similar to, or slightly larger than, the current one will arrive on Monday and peak Tuesday, boosting north shore surf again but staying below advisory levels. Surf along east facing shores will remain small as local winds remain fairly weak with only slight variations each day.
Fire weather
Issued at 330 PM HST Fri Oct 9 2026
Southeast winds today will give way to easterly trades Saturday at light to moderate levels. Moisture will decrease Saturday night into Sunday, bringing relative humidity levels down to near dangerous fire conditions Monday on part of the Big Island, including near Kona. The inversion will reform around 6500 feet Saturday as trades return.
HFO Watches/Warnings/Advisories
None.
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Data Courtesy of NOAA.gov
