Swimming at Playa Barra Vieja requires caution as it's a more natural, less-developed beach with fewer lifeguards than central Acapulco beaches. The waters can have strong currents and waves, so assess conditions before entering. The beach's remote location means emergency services may take longer to arrive. It's best to swim in groups and stay closer to shore. The lagoon side of Barra Vieja tends to be calmer than the ocean side. Always ask locals about current conditions and avoid swimming if you're unsure about water safety.

Playa Barra Vieja is naturally less crowded than central Acapulco beaches, but visiting during weekdays and outside Mexican holidays ensures maximum solitude. The dry season from November to April offers the best weather with minimal crowds, especially Tuesday through Thursday. Avoid weekends when Mexican families from Acapulco visit for the famous seafood restaurants. Early mornings any day of the week provide the most peaceful experience. The rainy season from June to October sees even fewer visitors, though weather can be unpredictable with afternoon showers.