The climate in the vast Himalayas has a natural duality because of the range's role as a climatic divide. As a result the duality exists in which the Tibet side of the range is arid and dry while the India side of the range is cold or cool by season and heavy in precipitation in all seasons.
This climatic divide forces the north-moving Indian monsoons to precipitate all their moisture as the storms move up the increasing altitudes so that the monsoon storms dissipate by the time they reach Tibet resulting in arid, dry conditions. This climatic divide also obstructs the passage of frigid northern plains air of the continent from passing into India resulting in milder winter weather in India.
The Himalayan range's role as this climatic divide results in its climate varying from freezing cold and precipitous to being hot, arid, and dry.