On big SW monsoon swells, go east and find Manapaddu. The spot called Alwars at Manapad Point is one the best surfing spots in India. It is far off the beaten track and not so easily accessible. The point is a beautifully formed ancient lava flow that extends into the water and when the rights are working, expect up to a 400 yard ride followed by a long walk back to the point.
When it is on, there might be a few surfers appear from Kovalam or the west coast, but only a few.