Honolulu, HI 96731 Frost Dates

Honolulu, HI: when does the frost end?

The NOAA station nearest to 96731 does not report a usable frost-date normal for either event, so no last-frost or first-frost figure is shown here. The USDA hardiness zone below is still real: Zone 12b (55 to 60°F average annual minimum).

Honolulu against the rest of the dataset

At roughly 365 frost-free days, Honolulu places 128 of 40,283 ZIP codes in this dataset. Within HI, it ranks 25 of 133.

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Before leaning on 96731's figures: zone vs. frost date explains why Zone 12b and Honolulu's frost date answer different questions, while local microclimates explains what one yard in Honolulu can differ from the 96731 normal.