Wander the UNESCO listed Galle Fort, best early in the morning or late afternoon when it's cool.

Off to Dewata beach and learn to surf, while you are there try the short eats at Sahana.

Go to town and check out the fish/fruit markets or drop into a sari shop.

Take a tuk tuk up to Hikkaduwa to see/feed the turtles on the beach.

Go to Udawalawe to see elephants or down to Yala for the leopards.

Take the train to Matara or Weligama/Mirissa for the day.