GreenlyAustralia: frost dates by city
The average last spring frost and first autumn frost in 7 cities of Australia, from ten years of weather. The last spring frost comes earliest in Melbourne and latest in Canberra.
| City | Last spring frost | First autumn frost | Frost-free days |
|---|---|---|---|
| Adelaide | none in ten years | none in ten years | — |
| Brisbane | none in ten years | none in ten years | — |
| Hobart | none in ten years | none in ten years | — |
| Perth | none in ten years | none in ten years | — |
| Sydney | none in ten years | none in ten years | — |
| Melbourne | 4 August | 25 June | 325 days |
| Canberra | 18 September | 30 May | 254 days |
Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.