Seven days is a good amount of time on the south coast. You can cover the main towns at a comfortable pace, build in a day of doing nothing in particular, and leave without the feeling that you were permanently in transit. The route below works for most first-time visitors and can be adjusted based on whether you want more surf, more culture, or a quieter trip.
Day 1: Arrive and get to Galle. If you are coming from Colombo by train, the coastal line to Galle takes around 2 to 2.5 hours from Colombo Fort station and is one of the better train journeys in the region. By taxi, the Southern Expressway takes around 1.5 to 2 hours depending on traffic. Arrive in the afternoon, walk the fort walls at sunset, eat dinner somewhere near the fort. Sleep in Galle or just outside it.
Day 2: A full day in Galle. Morning on the ramparts before the tour groups arrive. Spend the late morning in the fort's back lanes. In the afternoon, take a tuk-tuk to Jungle Beach in Unawatuna, a ten-minute walk through the forest from the road, and swim. Come back and eat dinner in or near the fort.
Day 3: Move to Weligama. About 30 minutes from Galle by bus or tuk-tuk. Check in, walk the bay, eat well. If you want to surf, this is the right beach to start: the wave at Weligama is long, forgiving, and the best beginner surf in Sri Lanka. Surf schools on the beach charge around 3,000 to 5,000 rupees for a two-hour lesson with board included.
Day 4: Day trip to Mirissa and Ahangama. Take a tuk-tuk to Mirissa in the morning, about 15 minutes east of Weligama. Walk to Coconut Tree Hill early before it gets crowded. Swim near Parrot Rock if the sea is calm. Back to Weligama for lunch, then take a second tuk-tuk to Ahangama, 10 minutes west toward Galle. Ahangama has the best cafe concentration on the coast. Spend the afternoon there and come back for dinner.
Day 5: Polhena and Matara. A morning trip to Polhena Beach just outside Matara, about 30 to 40 minutes east of Weligama. Rent snorkel gear from the beach vendors and spend two hours in the protected lagoon where green turtles feed on the reef. The rest of the morning in Matara town if you want to see the Dutch star fort and the fish market. Back to Weligama in the afternoon. This is a good day to do very little after the morning.
Day 6: Move to Hiriketiya. About 30 minutes east of Weligama toward Dickwella. A small horseshoe bay with a consistent left-hand surf break, no nightlife, and excellent cafes. Spend the day swimming or surfing and eating well. Hiriketiya is deliberately slow and it is one of the most memorable parts of the coast for most people who make it here.
Day 7: Final morning in Hiriketiya, then head north. If you are flying from Colombo the following day, spend the final morning at the beach and take an afternoon taxi or car up to Galle, which keeps the Colombo drive manageable the next morning. Alternatively, if you have a late flight or an extra morning, spend it on the Hiriketiya beach and go directly. The drive from Hiriketiya to Colombo takes around three to three and a half hours.
What this route skips. Tangalle, Tissamaharama, and Yala are further east and genuinely worth visiting, but seven days does not accommodate them without shortchanging everything else. If those are priorities, extend to ten days and continue east after Hiriketiya. The 10-day route is covered in a separate guide.