Alibaug
Alibaug beach hosts a thriving water sports scene between October and March — banana boat rides, jet skiing, parasailing, and kayaking are all available through licensed operators along the main stretch. It's not the wild open ocean (the beach is sheltered within Mumbai Harbour approaches) which makes conditions ideal for beginners. Families with kids find the banana boat and speed boat rides particularly popular.
Bargain as a group — water sports operators routinely offer 20–30% discounts for families or groups of 4 or more booking multiple activities together.