Tourist Seasons of Nepal
Seasons : Winter (December-February), Summer (March-May), Monsoon (June-Aug), Autumn (Sept-Nov).
Autumn (Sept-Nov.) : This season offers excellent weather and tantalising mountain views.
Winter (Dec-Feb) : This season is noted for occasional snowfall only at higher elevations. Hence it is ideal for trekking at lower elevations, generally below 3,000 meters.
Spring (March-May) : Different varieties of wild flowers, especially the rhododendrons which make the hillside above 5,000 meters a haunting paradise during this season. It is mildly warm at lower elevations and at higher elevation over 4,000 meters the mountain views are excellent and temperature is quite moderate.
Summer (Jan-Aug) : Summer months, continue up to mid September making travel wet and warm. These times are blessed for the keen botanist as the higher valleys and meadows blossom with flowers and lush vegetation.
It is recommended to carry insect repellent when trekking during summer months.