Koloa, HI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Koloa, a community in Kauai County, Hawaii.
Today
87°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy, with a high near 87. Northeast wind around 21 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Koloa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Chance Rain Showers | 21 mph NE | 63% |
| Tonight | 76°F | Scattered Rain Showers | 14 to 18 mph NE | 31% |
| Saturday | 86°F | Scattered Rain Showers | 14 to 20 mph NE | 36% |
| Saturday Night | 76°F | Scattered Rain Showers | 14 mph ENE | 27% |
| Sunday | 86°F | Scattered Rain Showers | 15 mph ENE | 31% |
| Sunday Night | 76°F | Isolated Rain Showers | 15 mph ENE | 24% |
| Monday | 87°F | Scattered Rain Showers | 15 mph NE | 30% |
| Monday Night | 75°F | Scattered Rain Showers | 13 mph NE | 30% |
| Tuesday | 87°F | Scattered Rain Showers | 13 mph NE | 37% |
| Tuesday Night | 76°F | Scattered Rain Showers | 13 mph NE | 44% |
| Wednesday | 86°F | Scattered Rain Showers | 14 mph NE | 43% |
| Wednesday Night | 75°F | Scattered Rain Showers | 13 mph NE | 40% |
| Thursday | 86°F | Scattered Rain Showers | 13 mph NE | 48% |
| Thursday Night | 75°F | Scattered Rain Showers | 13 to 18 mph NE | 39% |
Forecast source: National Weather Service (api.weather.gov) for Koloa (21.903, -159.461). Updated through the day.
Growing snapshot for Koloa
Growing season
365 days
More local growing data for Koloa: nearby ZIP 96756 weather · frost dates · planting calendar · Hawaii frost dates
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Climate data from the nearest NOAA station, Mahaulepu 941.1, Hi (2.1 mi from Koloa). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.