Hawaii Frost Dates
Published: February 1, 2026 · Updated: April 23, 2026
Last Spring Frost
Frost-free
Zone 12a
First Fall Frost
Frost-free
Zone 12a
Frost-Free Season
365 days
Year-round to Year-round
Lawn Care Timing for Hawaii
Vegetable Garden Timing for Hawaii
Frost Dates by City in Hawaii
Frequently Asked Questions
What is the last frost date in Hawaii?
The average last spring frost in Hawaii (zone 12a) is Frost-free. Dates vary by city and elevation. Find your specific city below for exact dates.
When is it safe to plant tomatoes in Hawaii?
Transplant tomato seedlings outdoors after Frost-free — the average last frost date for zone 12a. Start seeds indoors Year-round. Wait 2 weeks after last frost for extra safety.
When should I overseed my lawn in Hawaii?
The prime overseeding window in Hawaii is Not applicable. This ensures 6 weeks of warm soil for germination before the first fall frost on Frost-free.
When should I apply winteriser in Hawaii?
Apply winteriser fertiliser by Not applicable. Your first fall frost of Frost-free is the hard deadline — apply at least 2–3 weeks before.
What USDA zone is Hawaii?
Hawaii contains USDA zones 12a. Each zone has different frost dates and growing seasons. Find your city below for your specific zone.