Perisher vs Thredbo: which has more reliable snow?

The short answer

Neither has been reliably snow-sure in any month over the last 11 winters, but Perisher has had the better odds, especially in July, August and September.

Month by month

June: Perisher 0 of 11, Thredbo 0 of 11 snow-sure winters (9% and 8% of days).

July: Perisher 1 of 11, Thredbo 1 of 11 snow-sure winters (41% and 15% of days).

August: Perisher 6 of 11, Thredbo 2 of 11 snow-sure winters (59% and 45% of days).

September: Perisher 4 of 11, Thredbo 0 of 11 snow-sure winters (45% and 13% of days).

October: Perisher 0 of 11, Thredbo 0 of 11 snow-sure winters (8% and 0% of days).

A snow-sure winter is one where mid-mountain had 30 cm or more of modelled natural snow on at least 90% of that month’s days.

Height and terrain

Perisher and Thredbo are 15 km apart as the crow flies. Perisher first, then Thredbo: Village 1,605 m against 1,365 m; Mid-mountain 1,830 m against 1,701 m; Summit 2,054 m against 2,037 m. Mapped downhill runs: Perisher 83 km, Thredbo 55 km (OpenStreetMap).

In August, the village had 30 cm or more of natural snow on 39% of days at Perisher and 8% at Thredbo.

Questions

Which has more reliable snow, Perisher or Thredbo?

Neither has been reliably snow-sure in any month over the last 11 winters, but Perisher has had the better odds, especially in July, August and September.

Which has better snow down to the village, Perisher or Thredbo?

In August, Perisher: its village had 30 cm or more of modelled natural snow on 39% of days, against 8%.

Does this include snowmaking?

No. These are modelled natural snow figures only, from ERA5 weather. Groomed pistes with snowmaking often ski better than this.