Swimming at Hoshizuna Beach is generally safe during calm conditions, but be cautious of currents and waves depending on weather. The beach is remote with limited lifeguard services, so swim conservatively and stay close to shore. Check weather forecasts before visiting. Wear water shoes to protect against coral fragments and sharp objects. The beach is relatively sheltered, making it calmer than exposed coastlines. Always inform someone of your plans when visiting remote Iriomote locations. Marine life is abundant, so avoid touching coral or wildlife.

The best time to visit Hoshizuna Beach is from April to June and October to November when weather is pleasant with less rainfall and fewer tourists. July through September brings hot, humid weather and typhoon risk. December through March is cooler but still mild, with occasional rain. The beach is famous for its star-shaped sand grains, best observed during low tide. Visit early morning or late afternoon for softer light and fewer crowds. Plan around Iriomote's ferry schedules from Ishigaki Island when arranging your trip.

To reach Hoshizuna Beach, first fly to Ishigaki Island, then take a ferry to Iriomote Island's Uehara Port (about 40 minutes). From Uehara, the beach is accessible by rental car, taxi, or organized tour—it's approximately 10-15 minutes by road on the northern coast. Some visitors arrive by kayak or boat tours from nearby areas. The beach has limited parking and basic facilities. Check ferry schedules in advance as they can be affected by weather. Consider renting a car for flexibility exploring Iriomote's remote locations.

Hoshizuna Beach itself has minimal facilities, but the nearby Uehara area on Iriomote Island offers several guesthouses, small hotels, and minshuku (family-run inns). Dining options include small local restaurants serving Okinawan cuisine and seafood, though choices are limited compared to urban areas. Many accommodations offer meals as part of the stay. Bring snacks and water to the beach as on-site services are scarce. The nearest convenience stores are in Uehara village. Advance reservations are recommended, especially during peak seasons.

Hoshizuna Beach is world-famous for its star-shaped sand grains, which are actually the tiny exoskeletons of foraminifera, single-celled organisms. Under magnification, these grains reveal perfect five-pointed star shapes. This rare phenomenon occurs in only a few locations globally. The name literally means "star sand" in Japanese. Visitors often collect small samples as natural souvenirs, though taking sand is officially discouraged. Beyond the unique sand, the beach offers beautiful turquoise waters backed by subtropical jungle, creating an exceptionally scenic and memorable destination.