As summers are ferociously hot and winters bitterly cold, spring (April to June) and autumn (September to November) are the best seasons to visit. March is also a good time, as you’ll experience the Navrus festival. Up in the Pamirs, July to September is the only practical time to travel. The Anzob and Shakhristan passes between Khojand and Dushanbe are generally closed from late November to late May.