Waimalu, HI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Waimalu, a community in Honolulu County, Hawaii.
This Afternoon
88°F
Isolated Rain Showers
Isolated rain showers. Mostly sunny, with a high near 88. Heat index values as high as 96. East northeast wind 16 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
7-day forecast for Waimalu
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 88°F | Isolated Rain Showers | 16 to 20 mph ENE | 24% |
| Tonight | 77°F | Mostly Cloudy then Isolated Rain Showers | 16 mph ENE | 16% |
| Saturday | 87°F | Isolated Rain Showers then Mostly Cloudy | 14 to 21 mph ENE | 20% |
| Saturday Night | 76°F | Mostly Cloudy | 14 mph ENE | 13% |
| Sunday | 87°F | Isolated Rain Showers then Partly Sunny | 15 mph ENE | 15% |
| Sunday Night | 76°F | Mostly Cloudy | 13 mph ENE | 14% |
| Monday | 87°F | Isolated Rain Showers then Mostly Sunny | 14 mph ENE | 15% |
| Monday Night | 76°F | Scattered Rain Showers | 9 to 13 mph ENE | 26% |
| Tuesday | 88°F | Scattered Rain Showers | 14 mph ENE | 30% |
| Tuesday Night | 76°F | Scattered Rain Showers | 13 mph ENE | 39% |
| Wednesday | 87°F | Scattered Rain Showers | 14 mph NE | 31% |
| Wednesday Night | 76°F | Scattered Rain Showers | 12 mph NE | 32% |
| Thursday | 86°F | Scattered Rain Showers | 10 to 14 mph NE | 36% |
| Thursday Night | 75°F | Scattered Rain Showers | 10 to 15 mph ENE | 33% |
Forecast source: National Weather Service (api.weather.gov) for Waimalu (21.391, -157.933). Updated through the day.
Growing snapshot for Waimalu
Growing season
365 days
More local growing data for Waimalu: nearby ZIP 96860 weather · frost dates · planting calendar · Hawaii frost dates
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Climate data from the nearest NOAA station, Honolulu Intl Ap, Hi (2.6 mi from Waimalu). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.