Deconstruct SunHawaii Hardiness Zones
Hawaii covers USDA plant hardiness zones 10a to 13a on the 2023 map, so its coldest areas average 30 to 35 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.
Hawaii hardiness zone map
This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.
Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.
Zones and daylight by city
| City | Zone | Coldest night | Longest day | Shortest day |
|---|---|---|---|---|
| Honolulu | 12b | 55 to 60 °F | 13h 26m | 10h 50m |
| Hilo | 12b | 55 to 60 °F | 13h 19m | 10h 57m |
| Kahului | 12b | 55 to 60 °F | 13h 24m | 10h 52m |
| Kihei | 12b | 55 to 60 °F | 13h 24m | 10h 52m |
| Lihue | 12b | 55 to 60 °F | 13h 29m | 10h 48m |
Gardening in Hawaii?
Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.
Questions
What hardiness zones are in Hawaii?
Hawaii spans USDA zones 10a to 13a on the 2023 map. Honolulu is in zone 12b.
How do I find my exact zone in Hawaii?
Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.
How much sun do gardens in Hawaii get?
In Honolulu, an open spot gets up to 13.4 hours of daylight in June but only 10.8 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.