Bluff Knoll is the highest peak of the Stirling Range in the Great Southern region of Western Australia (WA).

The Bluff Knoll trail is a round trip of about 6 kilometres (4 mi) taking three to four hours,[3] and has a grade 4 rating of climbing difficulty, with some steep and rough steps.

Due to its elevation, Bluff Knoll and the surrounding peaks of the Stirling Ranges are some of only a few places to experience regular snowfalls in Western Australia.

Signage at the Bluff Knoll carpark states that a mist-like spirit named Noatch (meaning 'dead body' or 'corpse' in the Noongar language) resides there.

[7] While there are no weather stations on Bluff Knoll, the Australian Bureau of Meteorology's gridded climate dataset extrapolates the highest average elevation, coldest 0.025° × 0.025° area of the Stirling Ranges (the 6.5 square kilometres (2.5 sq mi) from 34.35° to 34.375° S and 118.25° to 118.275° E;[a] just excluding the summit but at a higher average elevation than its pixel) as having, averaged over its extent, a temperate or warm-summer mediterranean climate (Csb) according to the Köppen and Bureau of Meteorology classification systems.

Summers are mild while winters are cold by Australian standards; area-wide winter means are comparable to those of Canberra,[12][13] and average August lows at the summit likely brush freezing, with maxima frequently beating the 5.6 °C (42.1 °F) state record low figure set on 16 July 1946 at Salmon Gums and 5 August 1951 at Mount Barker.

Bluff Knoll is one of only a few places to experience regular snowfalls in Western Australia, with some snow reported in most years.