Depending on your preferences, you can perform a number of things.
Surfing is available on the western and southern coasts from November to April. Weligama on the southern shore is the best location for novices. A board may be rented for LKR1,500 per day or LKR400 per hour. Lessons are LKR2,500 per hour, which is a good deal.
Kitesurfing is available on the eastern shore from April to September. Kalpitiya (Sethawadi and Kappaladi lagoons) is the finest location for novices, with kite schools and the greatest conditions in Asia.
There is also white water rafting accessible.
Snorkeling – A popular location to view turtles is off the Coral Sanctuary in Hikkaduwa.
Hiking – Horton Plains National Park provides a pleasant hike to the magnificent vista at World’s End.