Leisurely Swimming in the Inlet Surrounded by Black Lava Rock—The Day's Climax

About this spot

A swimming beach located at Toushiki Coast in Oshima Town, open from July 18 (Saturday) to August 16 (Sunday), 2026, from 9 AM to 4 PM. With its inlet-shaped geography surrounded by black lava rock formations unique to Izu Oshima, this popular spot allows you to enjoy both tidepooling and sea bathing on calm days. The highly transparent water showcases the distinctive landscape of Izu Oshima and is one of the iconic summer scenes of the island. Swimming is free to enjoy, making it easy to stop by after exploring the island without hesitation. Stay until the evening closing time and fully savor the sea and the day on Izu Oshima.

Season & hours

Tips

Swimming hours are from 9 AM to 4 PM, so plan with time to spare by working backward from the closing time. Check the official Oshima Town information in advance regarding facilities such as shops and showers. Since the area has many rock formations, beach sandals or water shoes can protect your feet.

Best time to visit

Afternoon after 1 PM is the perfect time to leisurely swim after touring the island to cap off the day.

Access & map

Oshima Town, Toushiki Coast (大島町・トウシキ海岸)