Latitude, altitude, land and water distribution are the major factors that affect the climatic condition of any region. The climate of Nepal is also affected by the nature of a mountain chain. Nepal’s climate is also influenced by elevation, location in a subtropical latitude, ranges from subtropical monsoon conditions in the Terai, through a warm temperate climate, the mid-mountain region, cool temperate conditions in the higher parts of mountains and Alpine climate at the lower slopes of the Himalaya mountains. At altitudes above 16,000 feet, the temperature is always below freezing and the surface covered by snow and ice. Rainfall is ample in the eastern portion of the Terai and in the mountains, but the western portion of Nepal is drier.
Spring and autumn are the best seasons for visiting places in Nepal because of clear skies, beautiful natural scenarios, spectacular views and clean pathways.