The best time to visit this lovely place is in the winter season as you will be able to witness the green natural beauty and great waterfalls in the Sahyadris. It certainly is not a vast area, but yet has a great feel to the place. Schedule your trip between the winters months of December to February.
Summer begins from April and carries on till May and even August. It is not as a good a time to visit as the winter but in case you want to travel, you could.