Waimalu, HI planting zone & frost dates
Waimalu is in USDA hardiness zone 12b. Frost is rare here: in most years temperatures do not drop to 32°F.
USDA hardiness zone12bavg. extreme winter low 55°F to 60°F
FrostRarein most years the nearest weather station records no 32°F freeze
Useful for zone 12b gardens
- Drip irrigation kit — saves water in long, hot seasons
- Shade cloth — protects plants from midday sun
- Soil moisture meter
- Plants for zone 12
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Nearby cities
- Hālawa zone 12b
- Hālawa Heights zone 12b
- Aliamanu / Salt Lakes / Foster Village zone 12b
- Pearl City zone 12a
- Joint Base Pearl Harbor Hickam zone 12b
- Waipio zone 12a
- Waipahu zone 12a
- Royal Kunia zone 12a
Questions
What growing zone is Waimalu, HI?
Waimalu is in USDA Plant Hardiness Zone 12b (average extreme winter low 55°F to 60°F), according to the USDA 2023 map.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Honolulu Intl Ap, HI (USW00022521), 7.4 km (4.6 mi) from the city center, elevation 2 m, based on 30 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.