Mountains greatly affect the monsoon winds. They act as a barrier and direct the monsoon winds in a certain direction until the monsoon precipitation path is determined in a certain direction.
Perhaps the best example of this is the Indian monsoon rains. When the damp monsoon winds blow over the western ghats with complete fury, they are split in two by the western ghats. A branch of the Kerala moves upwards towards Mumbai and continues towards Surat before losing its power.
The second branch collides with the Bay of Bengal branch in western Bengal, and since there are mountains in the north and east of the region, the monsoon wind is forced to move from Calcutta northwest to Amritsar. Before entering Pakistan in Lahore, entering Pakistan, he exerts all his forces in the outer Himalayas near Murray, and since he can not go any further, an area located in the lower hills like Islamabad. Due to the proximity to the hills, it rains a lot.
Similarly, Muzaffarabad in the Kashmir region, with the support of high mountains, uses the effect of mountains, and here too much rainfall occurs. Rawalakot has a similar effect, but the best example in the world is the region in India, which we will explain soon.
Cherrapunji, a 4,500-foot-high station in the Khasi Hills, is so well located that the Indian Ocean branch and the Bay of Bengal monsoon branch meet at full force here. Secondly, due to the special location of the surrounding hills, this reinforced monsoon wind can not escape and causes extremely heavy rainfall at this station. Occasionally, up to 40 inches can fall on Cherrapunji in a day.
The second amazing effect can be seen in Mahabalshawar, a station located at an altitude almost above sea level with Charaponji overlooking the coast of Mumbai. Here, too, the high western Ghats hills behind the station force monsoon winds to rise, cool, and cause dense clouds with exceptional rainfall.
Aside from India, the same mountain trail can be seen in Myanmar and Bangladesh, where Chittagong, backed by the Arakan Highlands, receives more rainfall than any other place in Bangladesh.
In short, the mountains of South Asia significantly increase the activity of monsoon rains, and places near high hills receive extremely heavy rains.