Nejime Beach's remote location means limited or no lifeguard services, so swimmers must be self-reliant and cautious. The unspoiled natural setting suggests less infrastructure and emergency services compared to developed beaches. Water conditions depend on weather and Pacific Ocean currents, which can be unpredictable. The beach's sandy nature generally provides gentler entry than rocky coasts, but always assess conditions before swimming. Its isolated character means fewer people for assistance if needed, so swimming with companions is advisable. The pristine setting rewards those who respect nature and exercise appropriate caution.

Nejime Beach is best visited during favorable weather conditions, particularly spring (March-May) and autumn (September-November) when temperatures are pleasant and typhoon risk is lower. Summer offers warm swimming conditions but can be humid with occasional storms. Clear weather is essential for appreciating the beach's natural beauty and sunset views. The remote location makes checking weather forecasts crucial before traveling, as conditions can affect both enjoyment and safety. Winter visits are possible for sightseeing but less suitable for swimming. The unspoiled nature is best experienced in comfortable conditions.