Wahiawā, HI planting zone & frost dates
Wahiawā is in USDA hardiness zone 12a. Frost is rare here: in most years temperatures do not drop to 32°F.
USDA hardiness zone12aavg. extreme winter low 50°F to 55°F
FrostRarein most years the nearest weather station records no 32°F freeze
Useful for zone 12a 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
- Mililani Mauka zone 12a
- Schofield Barracks zone 12a
- Mililani Mauka / Launani Valley zone 12a
- Mililani Town zone 12a
- Waipio zone 12a
- Village Park zone 12a
- Royal Kunia zone 12a
- Pearl City zone 12a
Questions
What growing zone is Wahiawā, HI?
Wahiawā is in USDA Plant Hardiness Zone 12a (average extreme winter low 50°F to 55°F), according to the USDA 2023 map.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Upper Wahiawa 874.3, HI (USC00518838), 1.5 km (0.9 mi) from the city center, elevation 307 m, based on 11 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.