Is Spiti Valley Circuit doable In October? A 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. Category: Spiti valley tour FAQs Permalink Back to Top By raachotrekkers We trudge on the least explored trails and terrains of Kinnaur, Spiti, Uttarkashi and Garhwal region. View all of raachotrekkers's posts.