3 days
One beach base + Galle.
Choose Weligama, Mirissa or another nearby beach as your main base, then add Galle as a half-day or day trip. Three days is enough for a short coastal break, but not for covering the whole South Coast.
Main beach base→Galle
BEST FORShort coastal break
5 days
The strongest first-time South Coast plan.
Use one main beach base for several nights, add Galle for heritage, and leave enough unscheduled time for surf, swimming, food or simply staying by the sea.
Galle→Weligama / Mirissa→Beach days
BEST FORMost first-time itineraries
7 days
Add a quieter eastern stay.
With a full week, combine the western South Coast with a slower stay around Tangalle or nearby beaches. Use the extra time to reduce transfers rather than adding more sightseeing stops.
Galle→Weligama / Mirissa→Tangalle
BEST FORBeach-focused trips
TRIPBOOK TAKE
Five days is a strong starting point.
Three days works for one focused coastal base. Seven days works best when the extra time creates slower beach days rather than more hotel changes.