Ōhau Beach is an unpatrolled west coast beach, so swimming requires caution and good judgment. While it's tagged as family-friendly, this refers more to the quiet community atmosphere than ideal swimming conditions. The beach can experience surf, currents, and rips, particularly near the Ōhau River mouth. On calm days with settled conditions, paddling and supervised play in shallow water may be suitable for families. Always supervise children closely, avoid the river mouth area where currents are stronger, and never swim alone. Beach walking, picnicking, and exploring are safer family activities here than swimming.

Ōhau Beach is best enjoyed during settled weather conditions, typically more common in summer months (December-February), though the beach remains accessible year-round. The less-crowded nature means even summer visits feel peaceful and relaxed. Sunset viewing is exceptional throughout the year, with the west coast position offering beautiful evening skies. Spring and autumn provide comfortable temperatures for beach activities without peak-season visitors. Winter can be atmospheric but windier and cooler. For families, warmer months offer better conditions for beach play and exploration. Check weather forecasts before visiting as conditions can change rapidly on the west coast.