The Himalaya constitute
the highest mountain system of the world.
By October, nights and mornings are very
cold. Snowfall at elevations of about
3000mtrs is about 3mtrs and lasts from
December to March. About 4500mtrs, is
perpetual snow. The main season is the
spring from mid- Feb to March-April.
The air is cool and fresh. Colourful
flowers adorn the valleys, forest slopes
and meadows. In the hill stations, the
climate is pleasant and comfortable.The
rains start at the end of June. The entire
landscape becomes green and fresh. Streams
begin to swell and springs are replenished.
The heavy rains in July and August cause
damage to erosion, floods and landslides.
Dharamshala has the highest rainfall
of 3400mm. Spiti is the driest area (below
50mm rainfall) being enclosed by high
mountains on all sides.