Hawaii National Park, HI frost dates
Last spring frostApr 12median date
First fall frostDec 1median date
Growing season233 daysfrost-free
Hardiness zone12bZone 12b
How Hawaii National Park compares
- In 8 years out of 10, the last spring frost in Hawaii National Park falls between March 13 and May 18, a 66-day window. The first fall frost falls between November 9 and January 7.
- The weather station records an average of 34 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 13 |
| 50% (median) | April 12 |
| 10% (safe for tender plants) | May 18 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 9 |
| 50% (median) | December 1 |
| 90% (late) | January 7 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Hawaii National Park, HI
Hawaii National Park, HI frost dates — last frost Apr 12, first frost Dec 1, zone 12b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Jan 18 to Feb 1Transplant outside: Mar 15 to Mar 29
Start indoors: Feb 1 to Feb 15Transplant outside: Apr 26 to May 10
Start indoors: Feb 1 to Feb 15Transplant outside: Apr 26 to May 10
Start indoors: Feb 15 to Mar 1Transplant outside: Apr 19 to May 3
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 22 to Apr 5Sow outdoors: Mar 15 to Apr 19Plant for fall: Oct 6 to Nov 3
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 15 to Mar 29Sow outdoors: Mar 15 to Mar 29Plant for fall: Sep 22 to Oct 13
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 29 to Apr 12Plant for fall: Aug 25 to Sep 15
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 22 to Apr 5Plant for fall: Aug 25 to Sep 15
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 29 to Apr 12Plant for fall: Aug 25 to Sep 15
Start indoors: Mar 1 to Mar 15Transplant outside: May 3 to May 17Sow outdoors: May 3 to May 17
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 19 to May 3
Sow outdoors: Mar 1 to Mar 22Plant for fall: Sep 8 to Sep 29
Sow outdoors: Mar 1 to Mar 22Plant for fall: Oct 6 to Oct 27
Sow outdoors: Mar 8 to Apr 19Plant for fall: Oct 20 to Nov 10
Start indoors: Mar 15 to Mar 22Transplant outside: Apr 26 to May 3Sow outdoors: Apr 19 to May 3Plant for fall: Sep 15 to Sep 29
Start indoors: Mar 15 to Mar 22Sow outdoors: Apr 19 to May 3Plant for fall: Sep 22 to Oct 6
Start indoors: Mar 15 to Mar 22Sow outdoors: Apr 19 to May 3
Start indoors: Mar 15 to Mar 22Transplant outside: Apr 26 to May 10
Sow outdoors: Mar 22 to Apr 19Plant for fall: Sep 8 to Sep 22
Sow outdoors: Mar 22 to Apr 19Plant for fall: Sep 22 to Oct 6
Sow outdoors: Mar 22 to Apr 12
Sow outdoors: Mar 29 to Apr 26Plant for fall: Sep 22 to Oct 6
Sow outdoors: Mar 29 to Apr 19Plant for fall: Oct 6 to Oct 27
Sow outdoors: Apr 19 to May 10Plant for fall: Sep 15 to Sep 29
Sow outdoors: Apr 19 to May 3
Transplant outside: Apr 26 to May 17
Plant for fall: Nov 17 to Dec 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Hawaii National Park, HI
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 18 – Feb 1 | Mar 15 – Mar 29 | — | — |
| Peppers | Feb 1 – Feb 15 | Apr 26 – May 10 | — | — |
| Eggplant | Feb 1 – Feb 15 | Apr 26 – May 10 | — | — |
| Tomatoes | Feb 15 – Mar 1 | Apr 19 – May 3 | — | — |
| Lettuce | Feb 15 – Mar 1 | Mar 22 – Apr 5 | Mar 15 – Apr 19 | Oct 6 – Nov 3 |
| Kale | Feb 15 – Mar 1 | Mar 15 – Mar 29 | Mar 15 – Mar 29 | Sep 22 – Oct 13 |
| Broccoli | Feb 15 – Mar 1 | Mar 29 – Apr 12 | — | Aug 25 – Sep 15 |
| Cabbage | Feb 15 – Mar 1 | Mar 22 – Apr 5 | — | Aug 25 – Sep 15 |
| Cauliflower | Feb 15 – Mar 1 | Mar 29 – Apr 12 | — | Aug 25 – Sep 15 |
| Okra | Mar 1 – Mar 15 | May 3 – May 17 | May 3 – May 17 | — |
| Basil | Mar 1 – Mar 15 | Apr 19 – May 3 | — | — |
| Peas | — | — | Mar 1 – Mar 22 | Sep 8 – Sep 29 |
| Spinach | — | — | Mar 1 – Mar 22 | Oct 6 – Oct 27 |
| Radishes | — | — | Mar 8 – Apr 19 | Oct 20 – Nov 10 |
| Cucumbers | Mar 15 – Mar 22 | Apr 26 – May 3 | Apr 19 – May 3 | Sep 15 – Sep 29 |
| Zucchini & Summer Squash | Mar 15 – Mar 22 | — | Apr 19 – May 3 | Sep 22 – Oct 6 |
| Winter Squash & Pumpkins | Mar 15 – Mar 22 | — | Apr 19 – May 3 | — |
| Melons & Watermelon | Mar 15 – Mar 22 | Apr 26 – May 10 | — | — |
| Carrots | — | — | Mar 22 – Apr 19 | Sep 8 – Sep 22 |
| Beets | — | — | Mar 22 – Apr 19 | Sep 22 – Oct 6 |
| Potatoes | — | — | Mar 22 – Apr 12 | — |
| Swiss Chard | — | — | Mar 29 – Apr 26 | Sep 22 – Oct 6 |
| Cilantro | — | — | Mar 29 – Apr 19 | Oct 6 – Oct 27 |
| Green Beans | — | — | Apr 19 – May 10 | Sep 15 – Sep 29 |
| Sweet Corn | — | — | Apr 19 – May 3 | — |
| Sweet Potatoes | — | Apr 26 – May 17 | — | — |
| Garlic | — | — | — | Nov 17 – Dec 22 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Mauna Loa 5 Nne, HI weather station, 16 km away (elevation 11,178 ft (3,407 m)).
Frost dates near Hawaii National Park
- Kailua Kona (Hawaii) Apr 12 · Dec 1
- Volcano rare frost
- Mountain View rare frost
- Hilo rare frost
- Papaikou rare frost
- Kurtistown rare frost
- Pahala rare frost
- Pepeekeo rare frost
- Honomu rare frost
- Hakalau rare frost
Frequently asked questions
When is the last frost in Hawaii National Park, HI?
The median last spring frost in Hawaii National Park, HI is April 12. There is still about a 10% chance of frost after May 18, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Hawaii National Park, HI?
The median first fall frost is December 1, with about a 10% chance of frost before November 9.
How long is the growing season in Hawaii National Park, HI?
About 233 days between the median last spring frost and first fall frost.
What planting zone is Hawaii National Park, HI?
Hawaii National Park, HI is in USDA hardiness zone 12b.