Mirissa is the best and the most popular port to go whale watching in Sri Lanka.The best time to spot whales here is from November to April as the ocean is calm, and whales are migrating from the southern to the northern hemispheres. The geographic location makes it ideal for whale watching as this is where the continental shelf is at its narrowest, with ocean depths reaching 1km a few kilometers offshore.

Trincomalee has one of the largest natural harbors in this region and sandy, golden, andisolated beaches. Whale watching here is a lot quieter than in Mirissa. You do not see a lot of boats here allowing you to Whale watch leisurely. All the Whales found in Mirissa are seen in Trincomalee, but the percentage of success is not as high as in Mirissa

The least popular place is Kalpitiya. You often see a lot of Dolphins here, but the sightings of Whales are not great. But this is a very unique experience there will be very few boats in Sea. All the species of Whales seen in Mirissa are present in Kalpitiya, but they are in small numbers. The best time for Whale watching in Kalpitiya is from November to December and March till April.