South coast

Mirissa

A beach and fishing town on the south coast, best known for whale watching in season.

Illustrative image

Mirissa is one of the three main whale and dolphin watching areas in Sri Lanka. Blue whales are watched off Mirissa mainly between December and March. Sightings are never guaranteed, and the sea follows the monsoons.

Outside the whale season it is a place for beach days and slow evenings, a relaxed finish after the forest, the hills or the ancient cities.

What to expect

Whale watching in season, with a licensed operator
Beach days on the south coast
Fishing boats and a working coast
A relaxed end to a journey

When and how

Blue whales are watched off Mirissa mainly between December and March. Off Trincomalee, on the east coast, the season is mainly March to July.
Whale watching is regulated, but monitoring has been reported as weak, so we choose operators with care and never promise a sighting.
Sea and weather on the south coast change with the monsoons. If the sea is too rough we suggest an alternative.

Travel responsibly

Choose whale-watching operators who keep their distance and never chase the animals
Do not touch or stand on coral, and never take shells or marine life away
Take your litter with you and leave the beach as you found it

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.