Beach riding on Sumba follows the tide. Low tide opens wide stretches of firm sand; at Walakiri the mirror-flat shallows only appear near low tide, and because low tide moves about fifty minutes later each day, exact times are confirmed the day before.
Mornings bring the calmest water, which is why horse swimming starts early, while sunset rides leave between 3:30 and 4:30 PM depending on the season. One ride a day across those two windows is what keeps four days unhurried.
Choose one side of the island. Tambolaka Airport, in the southwest, is about an hour from Nihiwatu, and Weekuri Lagoon is on the same side; Waingapu is thirty minutes from Walakiri in the east. The two airports are around four hours apart by road.
April to October brings the clearest skies and the clearest lagoon water, and rides run year round. For the welfare of the horses, the rider weight limit is 85 kg (187 lbs).