Bastøya Beach offers generally calm swimming conditions typical of the Oslofjord. As an island beach, it provides a more secluded experience. While specific lifeguard services may not be present, the waters are usually clear and suitable for bathing. Visitors should always be mindful of local conditions and supervise children. The sandy bottom makes for pleasant entry into the water, ideal for a relaxing dip away from busier areas.

To enjoy Bastøya Beach with fewer crowds, consider visiting during the shoulder seasons, such as late spring or early autumn, when the weather is still pleasant but peak summer visitors have subsided. Weekdays, even during summer, will generally be quieter than weekends. Early mornings or late afternoons can also offer a more serene atmosphere, allowing you to fully appreciate its hidden and scenic qualities.

Bastøya Beach is located on Bastøya island, which is primarily known for its ferry connection. Access to the beach typically involves taking the Bastø Fosen ferry from Horten to Moss. The beach is then accessible from the ferry landing. It's advisable to check the ferry schedule in advance. The island setting contributes to its hidden and scenic charm, requiring a short journey to reach this tranquil spot.

As Bastøya Beach is situated on an island and known for its quieter character, direct food and lodging options immediately adjacent to the beach are limited. Visitors typically bring their own provisions for a day trip. For accommodation and a wider selection of dining, it is best to look in Horten itself, which serves as the main departure point for the island and offers various amenities suitable for travellers.

Bastøya Beach stands out due to its island location within the Horten archipelago, offering a distinctly quieter and more secluded Oslofjord experience. Unlike more urban or easily accessible beaches, its 'hidden' nature provides a sense of escape. It's an excellent choice for those seeking scenic sunbathing opportunities away from the hustle and bustle, valuing tranquility and the unique character of an island beach.