However, Sri Lanka offers a second blue whale watching season at the eastern coast, particularly near Trincomalee. The Trincomalee whale watching period starts in May and ends in September. Best chances to observe blue whales close to Trincomalee are just now, end of July and August. The waters around Trincomalee are visited by smaller numbers of sperm whales and large numbers of dolphins, too.
The Sri Lankan navy offers whale watching tour at the East Coast from May to August or sometimes even September. “South coast season” and “East Coast season” combined, Sri Lanka offers record-breaking nine month of blue whale watching opportunities.
Blue whales colonies usually stay 10 or 15 kilometres away from the coastline, about 30 minutes travel time. But occasionally this largest animal species of the world and of all times can be spotted even from Swami Rock in Trincomalee city.