Both statements are correct. Statement 1: The southwest monsoon hits the southern tip of India (Kerala) in June and gradually moves north, arriving in northern India by July. It also withdraws first from the northwest and moves south. So the duration is longest in the south and decreases northward. Statement 2: In the northern plains, rainfall decreases from east (Kolkata ~160cm) to west (Delhi ~60cm, Jaisalmer ~10cm) as the moisture-laden winds lose their moisture progressively as they move westward.