Swimming at Ilhéu Raso's rocky shores is challenging and potentially dangerous. The rocky coastline offers limited safe entry points, with sharp volcanic rock and unpredictable wave action. This tiny uninhabited islet has no beaches in the traditional sense, making swimming impractical for most visitors. Strong currents and exposure to open Atlantic conditions add significant risk. There are no lifeguards or emergency services within hours of travel. Most visitors come for wildlife observation and exploration rather than swimming, keeping to shore-based activities and shallow wading in protected spots only.

November through June offers the calmest seas for reaching this extremely remote islet, though visits are rare year-round. Ilhéu Raso is a protected seabird sanctuary with restricted access, so timing should align with any required permits or authorized scientific visits. Calmer winter and spring months provide safer boat approaches to rocky shores. The islet sees almost no tourism, so crowding is irrelevant. Weather windows are critical—only attempt visits during settled conditions with experienced boat operators. Wildlife breeding seasons may affect access permissions and recommended timing.