East coast

Trincomalee

A town on the east coast, known for whale watching in its own season.

Illustrative image

Trincomalee is on the east coast, which has its own weather and its own season. It is a place to add to a journey when the west and south are in their rainy months.

Blue whales are watched off Trincomalee for part of the year. We treat whale watching as a chance and never a promise, and we choose operators with care.

What to expect

The east coast and its own season
Whale watching, in its season
A counterpart to the south coast
Time by the sea away from the busiest places

When and how

Blue whales are watched off Trincomalee mainly between March and July. Sightings are never guaranteed, so we keep the day flexible.
The north-east monsoon, from December to February, rains mainly on the eastern half of the island. We plan around it, and we check the position for your dates.
Whale watching is regulated and monitoring has been reported as weak, so we choose operators who follow the rules and keep a respectful distance.

Travel responsibly

Choose operators who follow the rules and never chase or crowd the animals
Take your litter back and avoid single-use plastic on the boat
Respect the local community and ask before taking photographs of people

Practical facts

Each fact comes with its source and the date we last checked it. Rules and conditions change, so please confirm them before you travel.

Blue whales are watched off Mirissa, on the south coast, mainly between December and March, and off Trincomalee, on the east coast, mainly between March and July. Sightings are never guaranteed. Whale watching operators are licensed under national regulations, but monitoring has been reported as weak, so choose an operator with care.
Official source: IWC Whale Watching Handbook (opens in a new tab). Checked on October 11, 2026.
Whale and dolphin watching in Sri Lanka is regulated under the Sea Mammals Regulations of 2012. The Sri Lanka Tourism Development Authority has also published draft 2026 criteria for operators, which include no head-on approaches and a vessel speed limit of 5 knots near the animals.
Official source: Sri Lanka Tourism Development Authority (opens in a new tab). Checked on October 11, 2026.
Sri Lanka has two monsoons. The south-west monsoon (May to September) brings most of its rain to the south-west and the hill country; the north-east monsoon (December to February) rains mainly on the eastern half of the island. In the months between, October to November and March to April, showers can fall anywhere. Conditions vary from year to year.
Official source: Department of Census and Statistics, Sri Lanka (opens in a new tab). Checked on October 11, 2026.