As there are four main seasons in Nepal namely Winter (Dec-Feb), Spring (March-May), Summer (June-Aug), Autumn (Sep-Nov), various activities can be carried out in specific seasons so Nepal can be visited round the year.
Winter (Dec-Feb)
During this season the activities like Sightseeing, Heli tour, Mountain Flight, Rafting, Boating, Jungle safari, Hiking and the trekking towards the lower altitude like Ghorepani Trekking can be carried out.
Spring (March-May)
During this season all the activities available in Nepal such as Sightseeing, Trekking, Biking, Rafting, Jungle Safari, Hiking, Heli Tour, Mountain Flight, Hiking can be carried out. This season is mostly known for trekking as the mornings are usually clear but afternoon cloud build-up brings occasional showers.
Summer (June-Aug)
During this seasons particular activities can be carried out like sightseeing, trekking around Mustang, hiking around Nagarkot and Kakani, Jungle Safari, Heli Tour, Mountain Flight.
Autumn (Sep-Nov)
This is the best suitable season to visit Nepal and all the activities available in Nepal like Sightseeing, Trekking, Biking, Rafting, Jungle Safari, Hiking can be carried out during this season. Especially the traveler opt for the trekking in the mountainous region in this seasons as the weather is clear with mild to warm days and cold nights.