Plankiesbaai is a small, hidden bay with typical Atlantic West Coast conditions including cold water and potential currents. As a less-visited spot without lifeguard services or facilities, swimming requires strong ocean skills and caution. The bay's sheltered nature may offer calmer conditions than fully exposed beaches, but conditions vary daily. Rocky areas require careful navigation. Most visitors come for exploration and scenery rather than swimming. If you do swim, never go alone and always assess local conditions first.

The best weather occurs during South African summer months (December-March) with warmer temperatures and less rainfall, though expect cool ocean water year-round. For fewer crowds, visit on weekdays or outside major holiday periods, as this hidden bay attracts explorers seeking solitude. Early morning and late afternoon provide the best light for photography. Spring months offer surrounding wildflower displays. Because it's off the main beach strip, Plankiesbaai tends to be quiet even during moderately busy periods in Paternoster.