Last Frost Date Christchurch: Frost Dates, Late Frost Risk & Growing Season
When is the last spring frost and the first autumn frost in Christchurch? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.
The frost season in Christchurch
- Last frost (average): September 10
- In 1 year out of 10 it still freezes on September 28.
- First frost: May 25
- Frost-free season: 255 days
Frost days per month in Christchurch
- January: 0 · 12 °C
- February: 0 · 12 °C
- March: 0 · 10 °C
- April: 0 · 7 °C
- May: 2.1 · 4 °C
- June: 10.3 · 1 °C
- July: 13 · 1 °C
- August: 6.6 · 2 °C
- September: 1.5 · 4 °C
- October: 0 · 6 °C
- November: 0 · 8 °C
- December: 0 · 10 °C
- Matched to the average lows of a weather station 6 km away – accurate to about ±1–2 weeks.
- Daily minimum temperatures 2 m above ground over 30 years (1991–2020), NASA POWER; station data: Deutscher Wetterdienst (CC BY 4.0). Ground frost can form while the air at 2 m is still +2 to +3 °C.