Kongo River Beach requires careful consideration for swimming due to its location at a river mouth, where freshwater meets the ocean. Currents can be unpredictable, especially during tidal changes and after heavy rains when river flow increases. The sandy beach is suitable for families enjoying beach activities, wading, and playing, but strong swimmers should assess conditions carefully before entering deeper water. There are no lifeguard services. The scenic setting makes it excellent for beach walks and photography, with safer swimming typically found north along the main Diani coast.

Kongo River Beach can be visited year-round, though the dry seasons from July to October and January to March offer the most comfortable conditions. The beach sees fewer crowds than central Diani, making any time relatively peaceful. Sunset visits are particularly rewarding given the beach's scenic river-mouth location and Instagrammable views. During rainy seasons, the river may carry more sediment affecting water clarity. Weekdays offer the most tranquility, though even weekends remain less crowded than the main Diani Beach stretches to the south.