Gradac Beach is generally safe and suitable for families, featuring the typical pebble composition of the Makarska Riviera with gradually deepening waters. The beach offers reasonable shallow areas for children, though supervision is always necessary as depths vary. Water quality is excellent, and the beach is regularly cleaned during tourist season. Lifeguard services operate during peak summer months. The pebbles can be uncomfortable, so water shoes are recommended for all ages. The central beach area is well-organized with clear swimming zones. Currents are typically gentle, but conditions should be checked daily, especially during windy weather.

The best period for visiting Gradac Beach is June through September, with July and August offering warmest sea temperatures around 24-26°C but also the largest crowds and highest prices. June and September are often ideal, providing warm enough seas for comfortable swimming with fewer tourists and better accommodation rates. Gradac's southern Riviera position means it often enjoys slightly warmer temperatures than northern areas. September particularly benefits from sea warmth accumulated through summer while crowds diminish. May and October can be pleasant but cooler with limited services. For the best balance, consider early June or September.