How does the climate differ between the eastern and western Hindu Kush?

The Hindu Kush range acts as a climatic divide in Asia, resulting in significant regional differences between its eastern and western sections.1

Eastern Hindu Kush

The eastern portion of the range, including the Hindu Raj, is situated at the western limit of monsoonal Asia. This region is influenced by rain-bearing summer monsoon winds, leading to a climate characterized by:1
* Summers: Rainy or snowy, typically occurring from July to September.1
* Winters: Generally dry.1
* Glaciation: The mantle of snow and ice is heaviest here, particularly around Tirich Mir and the Chiantar Glacier.1

Central and Western Hindu Kush

In contrast, the central and western sections of the range border the Mediterranean climatic zone. This area experiences:1
* Summers: Hot and dry.1
* Winters: Cold, with significant rain or snow occurring from December to early March.1
* Glaciation: Glaciation is more sporadic in the west; in the central Hindu Kush, mountains reaching 12,000 feet (3,600 metres) are often bare of snow near their summits.1