Trekking in Nepal is an all season activity. The most popular trekking seasons are spring (February – May) and Fall (September to November), but even in the summer monsoon, trekking is popular in the rain shadow regions north of the Himalayas in areas such as Mustang, Upper Manang and Dolpo.
Main Season : Mid of September to Early December
Second Season: March to May
Monsoon Season : High Himalayan trekking such as Mustang , Dolpo
Winter season : Low land Himalayan trek Up to 3000 meters and enjoy with snow.