Trincomalee is a natural deep-water harbour on Sri Lanka’s east coast, flanked by beaches, dramatic clifftop temples, and some of the island’s finest diving and snorkelling sites. Fort Frederick and the Koneswaram Temple, perched above the ocean, give the city a heritage character that complements its outstanding natural setting. During the east coast season from May to September, Trincomalee is one of Sri Lanka’s most rewarding coastal destinations.