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 By raachotrekkers We trudge on the least explored trails and terrains of Kinnaur, Spiti, Uttarkashi and Garhwal region. View all of raachotrekkers's posts.