What is the climate classification of the cold desert Spiti Valley?

The cold desert Spiti Valley geography falls under the Köppen climate classification BWpk, which denotes a cold desert climate with cold winters and minimal precipitation.

Why is the Spiti Valley considered a cold desert?

The cold desert Spiti Valley geography is located in the rain shadow zone of the Himalayas, receiving less than 100 mm of annual precipitation, which qualifies it as a cold desert.