Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 96714 — Hanalei, HI

ZIP code 96714 (Hanalei, Kauai County) is in USDA zone 12a: the coldest winter night averages 50 to 55 °F.

Where ZIP 96714 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.

Zone12a50 to 55 °F

Coldest night10 to 12.8 °C

Last frostrare

First frostrare

2012 zone12a

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 12a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Hanalei, 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 — 9 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 12a in Hawaii

37 plants native to Hawaii, recorded in Hawaii, and rated by the USDA to survive 50 °F or colder — the bottom of zone 12a. Each links to its USDA PLANTS profile.

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 Hanalei, HI.

Soil in Hanalei, HI

The soil mapped at the center of ZIP 96714 is Rough mountainous land — silty clay loam, well drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up

pH4.3strongly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter25%high

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Rough mountainous land.

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 96714; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hanalei, HI

Summer high86 °Faverage high, August

Winter low62 °Faverage low, January

Hot days10days a year at 90 °F or more

Freezing nights0nights a year at 32 °F or less

Growing degree days8,680base 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

Precipitation75.2 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Princeville Rch 1117, HI (6 mi away); precipitation: Princeville Rch 1117, HI (6 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.

9672212b

Princeville, HI · 6 mi

Hawaii planting zones →

Questions about 96714

What planting zone is ZIP code 96714?

ZIP code 96714 (Hanalei, HI) is in USDA hardiness zone 12a on the 2023 map: the coldest night of an average winter reaches 50 to 55 °F (10 to 12.8 °C).

How much rain and snow does 96714 get?

About 75.2 inches of precipitation a year (NOAA 1991–2020 normals, Princeville Rch 1117 station).

How hot do summers get in Hanalei, HI?

The average high peaks at 86 °F in August, with about 10 days a year at 90 °F or more.

What kind of soil does 96714 have?

The USDA soil survey maps Rough mountainous land at the center of ZIP 96714: silty clay loam, well drained, pH about 4.3 (strongly acidic).

What kind of onions grow in Hanalei, HI?

Short-day onions: the longest day near 96714 is 13 h 29 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.