How To Reach Buran Ghati?

Buran Ghati pass remains accessible from May to October (or early November) period. The pass is reachable either via Janglikh-Litham Thach route or via Brua-Brua Kanda route.

Is Spiti Valley Circuit doable In October?

Yes. The circuit is doable in October, though, the weather gets highly erratic — after September — in high altitude regions of Kinnaur, Spiti valley and Lahaul valley.