The Himalayas, a massive mountain range, form India's northern border.
These mountains act as a significant climatic divide.
They effectively block the extremely cold, dry winds originating from Central Asia, particularly Siberia, during the winter season.
The sheer height and extent of the Himalayan range prevent these frigid air masses from reaching the Indian subcontinent, thus protecting it from severe winter conditions typical of continental interiors.
Other ranges like the Satpura, Aravali, and Western Ghats are located within India and do not influence the entry of Siberian winds.