Sandy Island Beach is generally considered safe for swimming, with calm, clear turquoise waters ideal for a relaxing dip. As an offshore islet, the surrounding waters are typically protected, making it suitable for various swimming abilities. Snorkeling is also a popular activity here due to the vibrant marine life and clear visibility. Always be mindful of boat traffic when entering or exiting the water, as it's primarily accessed by boat.

To experience Sandy Island Beach with fewer crowds, consider visiting during the shoulder seasons, typically late spring (May-June) or early autumn (September-October). During these times, the weather remains pleasant, but the peak tourist rush has subsided. Weekdays are generally less busy than weekends. Arriving earlier in the morning can also provide a more secluded experience before day-trippers arrive.