Wainui Hut sits in a grassy clearing beside the river. Its clearing has an aviary used to acclimatise kākā before their release into the park; that work has been going on since 2015. If you stay overnight, the four-bunk hut is first-come, first-served and requires a DOC hut ticket.
The through-route crosses the Wainui River without a bridge just after the hut. About 700 m later, continue straight at the junction toward Birds Clearing; the right-hand branch climbs Evans Ridge toward the Inland Track and Awapoto Hut. The Wainui Track follows the river for about another kilometre, fords back to the true left, then climbs the western side of the valley. Both river crossings can become impassable after heavy rain.