Frost dates for Perth
Station data · 80% confidence
Last spring frost (50%)
Aug 1
First fall frost (50%)
Jul 10
Frost-free days
343
The growing window at a glance
Frost-free growing season · 343 daysFrost risk (before Aug 1 / after Jul 10)
Frost dates are probabilities, not guarantees. Your garden's microclimate — slopes, walls, urban heat, cold pockets — can shift these dates by a week or more. Use them as a confident starting point, then watch your local forecast.