Answer: The Western Ghats obstruct the winds causing rainfall
Notes: The western side of the Western Ghats rise majestically to over 2500 meters above mean sea level to capture the Arabian sea branch of moisture laden southwest monsoon winds. The location of these mountain ranges is such that the South-West Monsoon that break over the southernmost tip of the peninsula during the last week of May, block the winds and they steadily rise against the mountain to condense rapidly and give copious rains on the western side. Consequently, the eastern side is typically known as the rain shadow region.
