Of the four seasons trekking spring and harvest time or fall are the most prominent seasons for trekking in Nepal among the trekkers. September-November: Trekking in the harvest time season (September-November): Autumn trekking season offers fabulous climate conditions and view the lovely mountain pre-winter are the best seasons to trek in the Himalayas of Nepal. Fall season is the pinnacle season, the climate is clear to see the breathtaking mou...