Honolulu, HI 96809 Frost Dates
96809, near Honolulu, HI: the frost window
The NOAA station nearest to 96809 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
Honolulu's growing season runs about 365 days, ranking 195 of 40,283 US ZIP codes measured here, longest to shortest. Within HI, it ranks 92 of 133.
Learn more
Two guides worth reading on 96809: zone vs. frost date, on why Zone 12b and Honolulu's frost date answer different questions, and local microclimates, on what one yard in Honolulu can differ from the 96809 normal.