When is the best time to trek in the Annapurna region?

The best time to trek in the Annapurna region (except for Nar-Phu) is between October and November, and from late February to April. Between late November and early February, it’s very cold at high altitude and the Thorung La Pass will probably be impassable due to snow. The routes to Tilicho Lake will also be snowed in at this time and lodges at higher elevations closed. There’s a real avalanche risk on the Annapurna Sanctuary and Tilicho Lake routes in spring. Avoid trekking most of this area during the monsoon (June-early-Sept)

Nar-Phu is unusual because it lies in the Himalayan rain shadow, and it’s possible to trek here during the monsoon — although you should still expect some rain and obscured mountain views. From November to early March, most valley inhabitants leave for lower and warmer climes and trekking lodges will be closed. The Kang La Pass will also be buried under snow and impossible to cross in mid-winter. This pass can also be complicated in spring with late and/or melting snow and ice. April-May and September-October are great times for Nar-Phu.