Why do you think Bhutan receives heavy rain in summer?

Explanation:

In Bhutan, a small Asian country crossed by the Himalayas, the climate is influenced by altitude: it is subtropical in the lowlands, and becomes progressively colder as you climb the mountains slopes. In addition, the climate is influenced by the summer monsoon, which brings rains and widespread cloudiness for almost six months per year, but especially from June to late September.