Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 96752 — Kekaha, HI

ZIP code 96752 (Kekaha, Kauai County) is in USDA zone 12b: the coldest winter night averages 55 to 60 °F.

Where ZIP 96752 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone12b55 to 60 °F
Coldest night12.8 to 15.6 °C
Last frostrare
First frostrare
2012 zone12b

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 12b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Kekaha, HI…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates

A 32 °F frost doesn't happen here in most winters. At the nearest station (NOAA station Kanalohuluhulu 1075, HI — 2 miles away, elevation 3,599 ft) the median growing season is 365 days. When frost does come, it is a midwinter night or two; cover tender plants when a freeze is forecast.

Frost data: NOAA NCEI U.S. Climate Normals 1991–2020.

Native plants for zone 12b in Hawaii

37 plants native to Hawaii, recorded in Hawaii, and rated by the USDA to survive 55 °F or colder — the bottom of zone 12b. Each links to its USDA PLANTS profile.

Trees 7

Chamisso's manfern10 ft · blooms indeterminate · medium shade tolerance · to 40 °Fhapu'u8 ft · blooms indeterminate · medium shade tolerance · to 40 °FHawai'i pritchardia60 ft · medium shade tolerance · to 40 °FKamalo pritchardia16 ft · medium shade tolerance · to 40 °Fkoa110 ft · blooms spring · high shade tolerance · to 31 °Fkoaoha40 ft · blooms early spring · high shade tolerance · to 25 °F

Shrubs 12

'ala'a40 ft · medium shade tolerance · to 40 °F'ohi'a lehua65 ft · blooms late spring · high shade tolerance · to 22 °Fbeach naupaka10 ft · blooms indeterminate · medium shade tolerance · to 31 °FGaudichaud's senna2 ft · to 40 °FHawai'i desert-thorn1 ft · blooms summer · medium shade tolerance · to 40 °FHawai'i hawthorn12 ft · blooms spring · medium shade tolerance · to 35 °F

Wildflowers & perennials 8

bayhops1 ft · blooms indeterminate · medium shade tolerance · to 17 °Fbeach strawberry0.8 ft · blooms early spring · medium shade tolerance · to −33 °Fcommon duckmeatblooms late summer · medium shade tolerance · to −38 °Fcommon maidenhair1.7 ft · blooms summer · low shade tolerance · to −33 °Flongleaf pondweedblooms mid summer · high shade tolerance · to −38 °Fsalt heliotrope1.2 ft · blooms mid spring · high shade tolerance · to −28 °F

Grasses 10

blunt spikerush1.6 ft · blooms summer · high shade tolerance · to 37 °Fcosmopolitan bulrush3 ft · blooms late summer · high shade tolerance · to −23 °Ffragrant flatsedge2 ft · blooms late summer · high shade tolerance · to 42 °Fkawelu3 ft · high shade tolerance · to 40 °Fmanyspike flatsedge1.6 ft · blooms mid summer · high shade tolerance · to 47 °Fovate spikerush1.5 ft · blooms late summer · high shade tolerance · to 47 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Kekaha, HI.

Soil in Kekaha, HI

The soil mapped at the center of ZIP 96752 is Paaiki — loam, well drained.

TextureLoama good balance for most vegetables
pH5.6moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter3%moderate
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Paaiki loam, 6 to 35 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 96752; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Kekaha, HI

Summer high73 °Faverage high, August
Winter low47 °Faverage low, February
Hot days0days a year at 90 °F or more
Freezing nights1nights a year at 32 °F or less
Growing degree days3,859base 50 °F — the season’s usable heat
Longest day13 h 29 mindaylight on June 21
Shortest day10 h 47 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation57.3 inper year, rain and melted snow

Average high and low, by month

40°50°60°70°80°January: average high 65 °F, low 48 °F 65°48° JanFebruary: average high 65 °F, low 47 °F 65°47° FebMarch: average high 65 °F, low 49 °F 65°49° MarApril: average high 67 °F, low 51 °F 67°51° AprMay: average high 69 °F, low 52 °F 69°52° MayJune: average high 71 °F, low 55 °F 71°55° JunJuly: average high 72 °F, low 56 °F 72°56° JulAugust: average high 73 °F, low 57 °F 73°57° AugSeptember: average high 72 °F, low 56 °F 72°56° SepOctober: average high 71 °F, low 55 °F 71°55° OctNovember: average high 69 °F, low 53 °F 69°53° NovDecember: average high 66 °F, low 51 °F 66°51° Dec

Precipitation by month inches

0″2″4″6″8″10″January: 7.86 in precipitation 7.9 JanFebruary: 5.78 in precipitation 5.8 FebMarch: 7.39 in precipitation 7.4 MarApril: 4.17 in precipitation 4.2 AprMay: 3.25 in precipitation 3.3 MayJune: 2.21 in precipitation 2.2 JunJuly: 1.84 in precipitation 1.8 JulAugust: 2.26 in precipitation 2.3 AugSeptember: 2.21 in precipitation 2.2 SepOctober: 4.63 in precipitation 4.6 OctNovember: 6.12 in precipitation 6.1 NovDecember: 9.58 in precipitation 9.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Kanalohuluhulu 1075, HI (2 mi away); precipitation: Kanalohuluhulu 1075, HI (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

3 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

9671412a
Hanalei, HI · 10 mi
9679612b
Waimea, HI · 11 mi
9676912a
Makaweli, HI · 12 mi
9674712b
Kaumakani, HI · 14 mi
9672212b
Princeville, HI · 15 mi
9671612b
Hanapepe, HI · 15 mi
9674112a
Kalaheo, HI · 15 mi
9670512b
Eleele, HI · 17 mi

Hawaii planting zones →

Questions about 96752

What planting zone is ZIP code 96752?

ZIP code 96752 (Kekaha, HI) is in USDA hardiness zone 12b on the 2023 map: the coldest night of an average winter reaches 55 to 60 °F (12.8 to 15.6 °C).

How much rain and snow does 96752 get?

About 57.3 inches of precipitation a year (NOAA 1991–2020 normals, Kanalohuluhulu 1075 station).

How hot do summers get in Kekaha, HI?

The average high peaks at 73 °F in August, with about 0 days a year at 90 °F or more.

What kind of soil does 96752 have?

The USDA soil survey maps Paaiki at the center of ZIP 96752: loam, well drained, pH about 5.6 (moderately acidic).

What kind of onions grow in Kekaha, HI?

Short-day onions: the longest day near 96752 is 13 h 29 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.