Costinești Beach is safe for swimming during the supervised summer season with lifeguards present and gradual sandy entry into the Black Sea. However, this beach is famous for its party atmosphere, attracting primarily young people and students. Nightlife can be loud and lively, sometimes continuing until dawn. While generally safe, the party environment means more alcohol consumption and crowded clubs. Families with young children might prefer quieter beaches. Standard beach safety applies—check flags, avoid swimming while intoxicated, and keep valuables secure in crowded areas. The festive atmosphere is the main draw for many visitors.

Costinești Beach is best visited during July and August when the party scene is most vibrant and energetic, attracting students and young travelers during summer holidays. This peak period offers the fullest nightlife experience with clubs, beach parties, and festivals. For lower prices and fewer crowds while still enjoying decent weather, consider late June or early September, though the party atmosphere diminishes outside peak weeks. The beach is particularly lively during Romanian student vacation periods. If you prefer a quieter experience, early mornings are your best bet before the party crowd wakes up.