Question

how do north west monsoon causes ​

Answer 1

This causes the winds to blow over the indian subcontinent towards the indian ocean in a northisterly direction..

hope it helps

Answer 2

This causes the winds to blow over the Indian subcontinent toward the Indian Ocean in a northeasterly direction, causing the northeast monsoon. Most of the time during the summer, the land is warmer than the ocean. This causes air to rise over the land and air to blow in from the ocean to fill the void left by the air that rose. As you know, rising air leads to cloud formation and precipitation. A monsoon climate is marked by dry winters and wet summers.